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| IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCKTM FEATURES: * * * * * * * * * * * * * * * * * * * * * * IDT5T2110 PRELIMINARY 2.5 VDD 6 differential outputs Low skew: 100ps all outputs Selectable positive or negative edge synchronization Tolerant of spread spectrum input clock Synchronous output enable Selectable inputs Input frequency: 4.17MHz to 250MHz Output frequency: 12.5MHz to 250MHz 1.8V / 2.5V LVTTL: up to 250MHz HSTL / eHSTL: up to 250MHz Hot insertable and over-voltage tolerant inputs 3-level inputs for selectable interface 3-level inputs for feedback divide selection with multiply ratios of(1-6, 8, 10, 12) Selectable HSTL, eHSTL, 1.8V/2.5V LVTTL, or LVEPECL input interface Selectable differential or single-ended inputs and six differential outputs PLL bypass for DC testing External differential feedback, internal loop filter Low Jitter: <75ps cycle-to-cycle Power-down mode Lock indicator Available in BGA and MLF package DESCRIPTION: The IDT5T2110 is a 2.5V PLL differential clock driver intended for high performance computing and data-communications applications. The IDT5T2110 has six differential outputs in six banks, including a dedicated differential feedback. The redundant input capability allows for a smooth change over to a secondary clock source when the primary clock source is absent. The feedback bank allows divide-by-functionality from 1 to 12 through the use of the DS[1:0] inputs. This provides the user with frequency multiplication 1 to 12 without using divided outputs for feedback. Each output bank also allows for a divide-by functionality of 2 or 4. The 5T2110 features a user-selectable, single-ended or differential input to six differential outputs. The differential clock driver also acts as a translator from a differential HSTL, eHSTL, 1.8V/2.5V LVTTL, LVEPECL, or single-ended 1.8V/2.5V LVTTL input to HSTL, eHSTL, or 1.8V/2.5V LVTTL outputs. Selectable interface is controlled by 3-level input signals that may be hard-wired to appropriate high-mid-low levels. The differential outputs can be synchronously enabled/disabled. Furthermore, when PE is held high, all the outputs are synchronized with the positive edge of the REF clock input. When PE is held low, all the outputs are synchronized with the negative edge of REF. FUNCTIONAL BLOCK DIAGRAM 1sOE OMODE TxS Divide Select 1Q 1Q 1F2:1 PD PE FS LOCK PLL_EN FB FB/ VREF2 3 /N 3 PLL 0 3F2:1 0 1 RxS 1 REF1 REF1/ VREF1 REF_SEL 4F2:1 Divide Select Divide Select 2F2:1 Divide Select Divide Select 2sOE 2Q 2Q 3sOE 3Q 3Q DS1:0 REF0 REF0/ VREF0 4sOE 4Q 4Q 5sOE 5Q 5Q 5F2:1 Divide Select QFB QFB FBF2:1 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE 1 c 2003 Integrated Device Technology, Inc. MAY 2003 DSC 5982/22 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION 1 A B C D E F G H J K L M VDD 2 1F2 3 1sOE 4 1Q 5 1Q 6 GND 7 GND 8 2Q 9 2Q 10 2sOE 11 2F2 12 VDDQ A B C D E F G H J K L M VDD VDD VDD NC 1F1 GND GND 2F1 NC VDDQ VDDQ 3F2 OMODE VDD REF_ SEL REF1 VDD VDD GND GND GND GND VDDQ VDDQ VDDQ 3sOE GND REF1 /VREF1 REF0 /VREF0 FB /VREF2 PLL_ EN TxS VDD VDD GND GND GND GND VDDQ VDDQ NC 3Q NC VDD GND GND GND GND VDDQ VDDQ 3F1 3Q REF0 VDD VDD GND GND GND GND VDDQ VDDQ VDDQ VDDQ FB VDD VDD GND GND GND GND VDDQ VDDQ VDDQ VDDQ PD PE VDD GND GND GND GND VDDQ VDDQ 4F1 4Q RxS VDD VDD GND GND GND GND VDDQ VDDQ NC 4Q LOCK VDD VDD VDD GND GND GND GND VDDQ VDDQ VDDQ 4sOE VDD VDD FS NC FBF1 GND GND 5F1 NC VDDQ VDDQ 4F2 DS1 DS0 FBF2 QFB QFB GND GND 5Q 5Q 5sOE 5F2 VDDQ 1 2 3 4 5 6 7 8 9 10 11 12 BGA TOP VIEW 2 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE PIN CONFIGURATION OMODE 1sOE VDDQ 1F1 2sOE VDDQ VDDQ VDDQ VDD VDD 1F2 2F1 1Q 67 60 59 2Q 68 66 65 64 63 62 61 58 57 56 55 54 53 52 2F2 1Q 2Q REF_SEL VDD REF1 REF1/VREF1 REF0 REF0/VREF0 FB FB/VREF2 VDD PE PD PLL_EN VDD RxS TxS LOCK VDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 GND 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 VDD 3F2 3sOE VDDQ VDDQ 3Q 3Q 3F1 VDD 4F1 4Q 4Q VDDQ VDDQ 4sOE 4F2 VDD 21 27 18 20 23 28 29 19 24 25 31 22 30 26 32 33 5sOE VDDQ DS0 FS FBF2 VDDQ 5F1 VDDQ VDDQ QFB QFB 5Q DS1 FBF1 VDD 5Q MLF TOP VIEW 3 5F2 34 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) Symbol VI VO VREF TJ TSTG Description Input Voltage Output Voltage Reference Voltage(3) Junction Temperature Storage Temperature Max -0.5 to +3.6 -0.5 to +3.6 -0.5 to VDDQ +0.5 -0.5 to +3.6 150 -65 to +165 Unit V V V V C C VDDQ, VDD Power Supply Voltage(2) CAPACITANCE(TA = +25C, f = 1MHz, VIN = 0V) Parameter CIN COUT Description Input Capacitance Output Capacitance Min. 2.5 -- Typ. 3 6.3 Max. 3.5 7 Unit pF pF NOTE: 1. Capacitance applies to all inputs except RxS, TxS, nF[2:1], FBF[2:1],and DS[1:0]. NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VDDQ and VDD internally operate independently. No power sequencing requirements need to be met. 3. Not to exceed 3.6V. RECOMMENDED OPERATING RANGE Symbol TA VDD(1) VDDQ(1) VT Description Ambient Operating Temperature Internal Power Supply Voltage HSTL Output Power Supply Voltage Extended HSTL and 1.8V LVTTL Output Power Supply Voltage 2.5V LVTTL Output Power Supply Voltage Termination Voltage Min. -40 2.3 1.4 1.65 Typ. +25 2.5 1.5 1.8 VDD VDDQ / 2 Max. +85 2.7 1.6 1.95 Unit C V V V V V NOTE: 1. All power supplies should operate in tandem. If VDD or VDDQ is at maximum, then VDDQ or VDD (respectively) should be at maximum, and vice-versa. PIN DESCRIPTION Symbol REF[1:0] REF[1:0]/ VREF[1:0] I/O I I Type Adjustable(1) Adjustable(1) Description Clock input. REF[1:0] is the "true" side of the differential clock input. If operating in single-ended mode, REF[1:0] is the clock input. Complementary clock input. REF[1:0]/VREF[1:0] is the "complementary" side of REF[1:0] if the input is in differential mode. If operating in single-ended mode, REF[1:0]/VREF[1:0] is left floating. For single-ended operation in differential mode, REF[1:0]/VREF[1:0] should be set to the desired toggle voltage for REF[1:0]: 2.5V LVTTL VREF = 1250mV (SSTL2 compatible) 1.8V LVTTL, eHSTL VREF = 900mV HSTL VREF = 750mV LVEPECL VREF = 1082mV Clock input. FB is the "true" side of the differential feedback clock input. If operating in single-ended mode, FB is the differential feedback clock input. Complementary feedback clock input. FB/VREF2 is the "complementary" side of FB if the input is in differential mode. If operating in singleended mode, FB/VREF2 is left floating. For single-ended operation in differential mode, FB/VREF2 should be set to the desired toggle voltage for FB: 2.5V LVTTL VREF = 1250mV (SSTL2 compatible) 1.8V LVTTL, eHSTL VREF = 900mV HSTL VREF = 750mV LVEPECL VREF = 1082mV FB FB/VREF2 I I Adjustable(1) Adjustable(1) NOTE: 1. Inputs are capable of translating the following interface standards. User can select between: Single-ended 2.5V LVTTL levels Single-ended 1.8V LVTTL levels or Differential 2.5V/1.8V LVTTL levels Differential HSTL and eHSTL levels Differential LVEPECL levels 4 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE PIN DESCRIPTION, CONTINUED Symbol REF_SEL nsOE I/O I I Type LVTTL(1) LVTTL(1) Description Reference clock select. When LOW, selects REF0 and REF0/VREF0. When HIGH, selects REF1 and REF1/VREF1. Synchronous output enable. When nsOE is HIGH, nQ and nQ are synchronously stopped. OMODE selects whether the outputs are gated LOW/HIGH or tri-stated. When OMODE is HIGH, PE determines the level at which the outputs stop. When PE is LOW/HIGH, the nQ is stopped in a HIGH/LOW state, while the nQ is stopped at a LOW/HIGH state. When OMODE is LOW, the outputs are tristated. Set nsOE LOW for normal operation. Feedback clock output Complementary feedback clock output Clock outputs Complementary clock outputs Selects single-ended 2.5V LVTTL (HIGH), 1.8V LVTTL (MID) REF clock input or differential (LOW) REF clock input Sets the drive strength of the output drivers and feedback inputs to be 2.5V LVTTL (HIGH), 1.8V LVTTL (MID) or eHSTL/HSTL (LOW) compatible. Used in conjuction with VDDQ to set the interface levels. Selectable positive or negative edge control. When LOW/HIGH the outputs are synchronized with the negative/positive edge of the reference clock (has internal pull-up). Function select inputs for divide-by-2, divide-by-4, zero delay, or invert on each bank. (See Control Summary table.) Function select inputs for divide-by-2, divide-by-4, zero delay, or invert on the feedback bank (See Control Summary table) Selects appropriate oscillator circuit based on anticipated frequency range (See VCO Frequency Range Select table) 3-level inputs for feedback input divider selection (See Divide Selection table) PLL enable/disable control. Set LOW for normal operation. When PLL_EN is HIGH, the PLL is disabled and REF[1:0] goes to all outputs. Power down control. When PD is LOW, the inputs are disabled and internal switching is stopped. OMODE selects whether the outputs are gated LOW/HIGH or tri-stated. When OMODE is HIGH, PE determines the level at which the outputs stop. When PE is LOW/ HIGH, the nQ and QFB are stopped in a HIGH/LOW state, while the nQ and QFB are stopped in a LOW/HIGH state. When OMODE is LOW, the outputs are tri-stated. Set PD HIGH for normal operation. PLL lock indication signal. HIGH indicates lock. LOW indicates that the PLL is not locked and outputs may not be synchronized to the inputs. The output will be 2.5V LVTTL. Output disable control. Determines the outputs' disable state. Used in conjunction with nsOE and PD. (See Output Enable/Disable and Powerdown tables.) Power supply for output buffers. When using 2.5V LVTTL, VDDQ should be connected to VDD. Power supply for phase locked loop, lock output, inputs, and other internal circuitry Ground QFB QFB nQ nQ RxS TxS PE nF[2:1] FBF[2:1] FS DS[1:0] PLL_EN PD O O O O I I I I I I I I I Adjustable(2) Adjustable(2) Adjustable(2) Adjustable(2) 3-Level(3) 3-Level(3) LVTTL(1) LVTTL(1) LVTTL(1) LVTTL(1) 3-Level(3) LVTTL(1) LVTTL(1) LOCK OMODE VDDQ VDD GND O I LVTTL LVTTL(1) PWR PWR PWR NOTES: 1. Pins listed as LVTTL inputs will accept 2.5V signals under all conditions. If the output is operating at 1.8V or 1.5V, the LVTTL inputs will accept 1.8V LVTTL signals as well. 2. Outputs are user selectable to drive 2.5V, 1.8V LVTTL, eHSTL, or HSTL interface levels when used with the appropriate VDDQ voltage. 3. 3-level inputs are static inputs and must be tied to VDD or GND or left floating. These inputs are not hot-insertable or over voltage tolerant. OUTPUT ENABLE/DISABLE nsOE L H H OMODE X L H Output Normal Operation Tri-State Gated(1) VCO FREQUENCY RANGE SELECT FS(1) LOW HIGH Min. 50 100 Max. 125 250 Unit MHz MHz NOTE: 1. PE determines the level at which the outputs stop. When PE is LOW/HIGH, the nQ is stopped in a HIGH/LOW state while the nQ is stopped at a LOW/HIGH state. POWERDOWN PD H L L OMODE X L H Output Normal Operation Tri-State Gated(1) NOTE: 1. The level to be set on FS is determined by the nominal operating frequency of the VCO. The VCO frequency (FNOM) always appears at nQ and nQ outputs when they are operated in their undivided modes. The frequency appearing at the REF[1:0] and REF[1:0] /VREF[1:0] and FB and FB/VREF2 inputs will be FNOM when the QFB and QFB are undivided and DS[1:0] = MM. The frequency of REF[1:0] and REF[1:0] /VREF[1:0] and FB and FB/VREF2 inputs will be FNOM/2 or FNOM/4 when the part is configured for frequency multiplication by using a divided QFB and QFB and setting DS[1:0] = MM. Using the DS[1:0] inputs allows a different method for frequency multiplication (see Divide Selection table). NOTE: 1. PE determines the level at which the outputs stop. When PE is LOW/HIGH, the nQ and QFB are stopped in a HIGH/LOW state, while the nQ and QFB are stopped in a LOW/HIGH state. 5 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE EXTERNAL DIFFERENTIAL FEEDBACK By providing a dedicated external differential feedback, the IDT5T2110 gives users flexibility with regard to divide selection. The FB and FB/ VREF2 signals are compared with the input REF[1:0] and REF[1:0]/VREF[1:0] signals at the phase detector in order to drive the VCO. Phase differences cause the VCO of the PLL to adjust upwards or downwards accordingly. An internal loop filter moderates the response of the VCO to the phase detector. The loop filter transfer function has been chosen to provide minimal jitter (or frequency variation) while still providing accurate responses to input frequency changes. DIVIDE SELECTION TABLE DS [1:0] LL LM LH ML MM MH HL HM HH Divide-by-n 2 3 4 5 1 6 8 10 12 Permitted Output Divide-by-n connected to FB and FB/VREF2(1) 1, 2 1 1, 2 1, 2 1, 2, 4 1, 2 1 1 1 NOTE: 1. Permissible output division ratios connected to FB and FB/VREF2. The frequencies of the REF[1:0] and REF[1:0]/VREF[1:0] inputs will be FNOM/N when the parts are configured for frequency multiplication by using an undivided output for FB and FB/VREF2 and setting DS[1:0] to N (N = 1-6, 8, 10, 12). CONTROL SUMMARY TABLE FOR ALL OUTPUTS nF2/FBF2 L L H H nF1/FBF1 L H L H Output Skew Divide by 2 Zero Delay Inverted Divide by 4 6 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE INPUT/OUTPUT SELECTION(1) Input 2.5V LVTTL SE 1.8V LVTTL SE 2.5V LVTTL DSE 1.8V LVTTL DSE LVEPECL DSE eHSTL DSE HSTL DSE 2.5V LVTTL DIF 1.8V LVTTL DIF LVEPECL DIF eHSTL DIF HSTL DIF 2.5V LVTTL SE 1.8V LVTTL SE 2.5V LVTTL DSE 1.8V LVTTL DSE LVEPECL DSE eHSTL DSE HSTL DSE 2.5V LVTTL DIF 1.8V LVTTL DIF LVEPECL DIF eHSTL DIF HSTL DIF 1.8V LVTTL Output 2.5V LVTTL Input 2.5V LVTTL SE 1.8V LVTTL SE 2.5V LVTTL DSE 1.8V LVTTL DSE LVEPECL DSE eHSTL DSE HSTL DSE 2.5V LVTTL DIF 1.8V LVTTL DIF LVEPECL DIF eHSTL DIF HSTL DIF 2.5V LVTTL SE 1.8V LVTTL SE 2.5V LVTTL DSE 1.8V LVTTL DSE LVEPECL DSE eHSTL DSE HSTL DSE 2.5V LVTTL DIF 1.8V LVTTL DIF LVEPECL DIF eHSTL DIF HSTL DIF HSTL Output eHSTL NOTE: 1. The INPUT/OUTPUT SELECTION Table describes the total possible combinations of input and output interfaces. Single-Ended (SE) inputs in a single-ended mode require the REF[1:0]/VREF[1:0] and FB/VREF2 pins to be left floating. Differential Single-Ended (DSE) is for single-ended operation in differential mode, requiring VREF[1:0] and VREF2. Differential (DIF) inputs are used only in differential mode. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Symbol VIHH VIMM VILL I3 IPU Parameter Input HIGH Voltage Level(1) Input MID Voltage Level(1) Input LOW Voltage Level(1) 3-Level Input DC Current (RxS, TxS, DS[1:0]) Input Pull-Up Current (PE) Test Conditions 3-Level Inputs Only 3-Level Inputs Only 3-Level Inputs Only HIGH Level VIN = VDD VIN = VDD/2 MID Level VIN = GND LOW Level VDD = Max., VIN = GND Min. VDD - 0.4 VDD/2 - 0.2 -- -- -50 -200 -100 Max -- VDD/2 + 0.2 0.4 200 +50 -- -- Unit V V V A A NOTE: 1. These inputs are normally wired to VDD, GND, or left floating. Internal termination resistors bias unconnected inputs to VDD/2. If these inputs are switched dynamically after powerup, the function and timing of the outputs may be glitched, and the PLL may require additional tLOCK time before all datasheet limits are achieved. 7 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR HSTL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage VIN DC Input Voltage VDIF DC Differential Voltage(2,8) VCM DC Common Mode Input Voltage(3,8) VIH DC Input HIGH(4,5,8) VIL DC Input LOW(4,6,8) Single-Ended Reference Voltage(4,8) VREF Output Characteristics VOH Output HIGH Voltage VOL VOX Output LOW Voltage Qn/Qn and FB/FB Output Crossing Point Test Conditions VDD = 2.7V VI = VDDQ/GND VDD = 2.7V VI = GND/VDDQ VDD = 2.3V, IIN = -18mA Min. -- -- -- - 0.3 0.2 680 VREF + 100 -- -- VDDQ - 0.4 VDDQ - 0.1 -- -- VDDQ/2 - 150 Typ.(7) -- -- - 0.7 Max 5 5 - 1.2 +3.6 -- 900 -- VREF - 100 -- -- -- 0.4 0.1 VDDQ/2 + 150 Unit A V V V mV mV mV mV V V mV 750 750 IOH = -8mA IOH = -100A IOL = 8mA IOL = 100A VDDQ/2 NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. Differential mode only. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW input. The AC differential voltage must be achieved to guarantee switching to a new state. 3. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only. 4. For single-ended operation, in differential mode, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. 5. Voltage required to maintain a logic HIGH, single-ended operation in differential mode. 6. Voltage required to maintain a logic LOW, single-ended operation in differential mode. 7. Typical values are at VDD = 2.5V, VDDQ = 1.5V, +25C ambient. 8. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. (See Input/Output Selection table.) 8 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS FOR HSTL OUTPUTS(1) Symbol IDDQ Parameter Quiescent VDD Power Supply Current(3) Test Conditions(2) VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDD = Max., PD = LOW, nSOE = LOW, PLL_EN = HIGH VDD = Max., VDDQ = Max., CL = 0pF VDD = Max., VDDQ = Max., CL = 0pF VDDQ = 1.5V, FVCO = 100MHz, CL = 15pF VDDQ = 1.5V, FVCO = 250MHz, CL = 15pF VDDQ = 1.5V, FVCO = 100MHz, CL = 15pF VDDQ = 1.5V, FVCO = 250MHz, CL = 15pF Typ. 15 Max 25 Unit mA IDDQQ Quiescent VDDQ Power Supply Current(3) 0.7 50 A IDDPD IDDD IDDDQ ITOT ITOTQ Power Down Current Dynamic VDD Power Supply Current per Output Dynamic VDDQ Power Supply Current per Output Total Power VDD Supply Current(4) Total Power VDDQ Supply Current(4) 0.8 13 16 35 55 45 80 3 20 25 55 85 70 120 mA A/MHz A/MHz mA mA NOTES: 1. These power consumption characteristics are for all the valid input interfaces and cover the worst case input and output interface combinations. 2. The termination resistors are excluded from these measurements. 3. If the differential input interface is used, the true input is held LOW and the complementary input is held HIGH. 4. FS = HIGH. DIFFERENTIAL INPUT AC TEST CONDITIONS FOR HSTL Symbol VDIF VX VTHI tR, tF Parameter Input Signal Swing(1) Differential Input Signal Crossing Point Input Signal Edge Rate (4) (2) Value 1 750 Crossing Point 1 Units V mV V V/ns Input Timing Measurement Reference Level(3) NOTES: 1. The 1V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 750mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 1V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. 9 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR eHSTL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage VIN DC Input Voltage VDIF DC Differential Voltage(2,8) VCM DC Common Mode Input Voltage(3,8) VIH DC Input HIGH(4,5,8) VIL DC Input LOW(4,6,8) Single-Ended Reference Voltage(4,8) VREF Output Characteristics VOH Output HIGH Voltage VOL VOX Output LOW Voltage Qn/Qn and FB/FB Output Crossing Point Test Conditions VDD = 2.7V VI = VDDQ/GND VDD = 2.7V VI = GND/VDDQ VDD = 2.3V, IIN = -18mA Min. -- -- -- - 0.3 0.2 800 VREF + 100 -- -- VDDQ - 0.4 VDDQ - 0.1 -- -- VDDQ/2 - 150 Typ.(7) -- -- - 0.7 Max 5 5 - 1.2 +3.6 -- 1000 -- VREF - 100 -- -- -- 0.4 0.1 VDDQ/2 + 150 Unit A V V V mV mV mV mV V V V V mV 900 900 IOH = -8mA IOH = -100A IOL = 8mA IOL = 100A VDDQ/2 NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. Differential mode only. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW input. The AC differential voltage must be achieved to guarantee switching to a new state. 3. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only. 4. For single-ended operation, in a differential mode, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. 5. Voltage required to maintain a logic HIGH, single-ended operation in differential mode. 6. Voltage required to maintain a logic LOW, single-ended operation in differential mode. 7. Typical values are at VDD = 2.5V, VDDQ = 1.8V, +25C ambient. 8. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. (See Input/Output Selection table.) POWER SUPPLY CHARACTERISTICS FOR eHSTL OUTPUTS(1) Symbol IDDQ Parameter Quiescent VDD Power Supply Current(3) Test Conditions(2) VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDD = Max., PD = LOW, nSOE = LOW, PLL_EN = HIGH VDD = Max., VDDQ = Max., CL = 0pF VDD = Max., VDDQ = Max., CL = 0pF VDDQ = 1.8V, FVCO = 100MHz, CL = 15pF VDDQ = 1.8V, FVCO = 250MHz, CL = 15pF VDDQ = 1.8V, FVCO = 100MHz, CL = 15pF VDDQ = 1.8V, FVCO = 250MHz, CL = 15pF Typ. 15 Max 25 Unit mA IDDQQ Quiescent VDDQ Power Supply Current(3) 1.7 50 A IDDPD IDDD IDDDQ ITOT ITOTQ Power Down Current Dynamic VDD Power Supply Current per Output Dynamic VDDQ Power Supply Current per Output Total Power VDD Supply Current(4) Total Power VDDQ Supply Current(4) 0.8 13 20 35 55 50 115 3 20 30 55 85 75 175 mA A/MHz A/MHz mA mA NOTES: 1. These power consumption characteristics are for all the valid input interfaces and cover the worst case input and output interface combinations. 2. The termination resistors are excluded from these measurements. 3. If the differential input interface is used, the true input is held LOW and the complementary input is held HIGH. 4. FS = HIGH 10 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE DIFFERENTIAL INPUT AC TEST CONDITIONS FOR eHSTL Symbol VDIF VX VTHI tR, tF Parameter Input Signal Swing(1) Differential Input Signal Crossing Point Input Signal Edge Rate (4) (2) Value 1 900 Crossing Point 1 Units V mV V V/ns Input Timing Measurement Reference Level(3) NOTES: 1. The 1V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 900mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 1V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR LVEPECL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage VIN DC Input Voltage VCM DC Common Mode Input Voltage(3,5) VREF Single-Ended Reference Voltage(4,5) VIH DC Input HIGH VIL DC Input LOW Test Conditions VDD = 2.7V VI = VDDQ/GND VDD = 2.7V VI = GND/VDDQ VDD = 2.3V, IIN = -18mA Min. -- -- -- - 0.3 915 -- 1275 555 Typ.(2) -- -- - 0.7 -- 1082 1082 -- -- Max 5 5 - 1.2 3.6 1248 -- 1620 875 Unit A V V mV mV mV mV NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. Typical values are at VDD = 2.5V, +25C ambient. 3. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only. 4. For single-ended operation while in differential mode, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. 5. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. (See Input/Output Selection table.) 11 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE DIFFERENTIAL INPUT AC TEST CONDITIONS FOR LVEPECL Symbol VDIF VX VTHI tR, tF Parameter Input Signal Swing (1) Value 732 1082 Crossing Point 1 Units mV mV V V/ns Differential Input Signal Crossing Point(2) Input Timing Measurement Reference Level(3) Input Signal Edge Rate(4) NOTES: 1. The 732mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 1082mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 1V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR 2.5V LVTTL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage DC Input Voltage VIN Single-Ended Inputs(2) VIH DC Input HIGH DC Input LOW VIL Differential Inputs VDIF DC Differential Voltage(3,9) VCM DC Common Mode Input Voltage(4,9) VIH DC Input HIGH(5,6,9) VIL DC Input LOW(5,7,9) Single-Ended Reference Voltage(5,9) VREF Output Characteristics VOH Output HIGH Voltage VOL Output LOW Voltage Test Conditions VDD = 2.7V VI = VDDQ/GND VDD = 2.7V VI = GND/VDDQ VDD = 2.3V, IIN = -18mA Min. -- -- -- - 0.3 1.7 -- 0.2 1150 VREF + 100 -- -- IOH = -12mA IOH = -100A IOL = 12mA IOL = 100A VDDQ - 0.4 VDDQ - 0.1 -- -- Typ.(8) -- -- - 0.7 Max 5 5 - 1.2 +3.6 -- 0.7 -- 1350 -- VREF - 100 -- -- -- 0.4 0.1 Unit A V V V V V mV mV mV mV V V V V 1250 1250 NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. For 2.5V LVTTL single-ended operation, the RxS pin is tied HIGH and REF[1:0]/VREF[1:0] is left floating. If TxS is HIGH, FB/VREF2 should be left floating. 3. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. Differential mode only. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW input. The AC differential voltage must be achieved to guarantee switching to a new state. 4. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only. 5. For single-ended operation, in differential mode, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. 6. Voltage required to maintain a logic HIGH, single-ended operation in differential mode. 7. Voltage required to maintain a logic LOW, single-ended operation in differential mode. 8. Typical values are at VDD = 2.5V, VDDQ = VDD, +25C ambient. 9. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. (See Input/Output Selection table.) 12 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS FOR 2.5V LVTTL OUTPUTS(1) Symbol IDDQ Parameter Quiescent VDD Power Supply Current(3) Test Conditions(2) VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDD = Max., PD = LOW, nSOE = LOW, PLL_EN = HIGH VDD = Max., VDDQ = Max., CL = 0pF VDD = Max., VDDQ = Max., CL = 0pF VDDQ = 2.5V., FVCO = 100MHz, CL = 15pF VDDQ = 2.5V., FVCO = 250MHz, CL = 15pF VDDQ = 2.5V., FVCO = 100MHz, CL = 15pF VDDQ = 2.5V., FVCO = 250MHz, CL = 15pF Typ. 15 Max 25 Unit mA IDDQQ Quiescent VDDQ Power Supply Current(3) 12 50 A IDDPD IDDD IDDDQ ITOT ITOTQ Power Down Current Dynamic VDD Power Supply Current per Output Dynamic VDDQ Power Supply Current per Output Total Power VDD Supply Current(4) Total Power VDDQ Supply Current(4) 0.5 15 30 40 60 80 200 3 25 40 60 90 120 300 mA A/MHz A/MHz mA mA NOTES: 1. These power consumption characteristics are for all the valid input interfaces and cover the worst case input and output interface combinations. 2. The termination resistors are excluded from these measurements. 3. If the differential input interface is used, the true input is held LOW and the complementary input is held HIGH. 4. FS = HIGH. DIFFERENTIAL INPUT AC TEST CONDITIONS FOR 2.5V LVTTL Symbol VDIF VX VTHI tR, tF Parameter Input Signal Swing(1) Differential Input Signal Crossing Point Input Signal Edge Rate(4) (2) Value VDD VDD/2 Crossing Point 2.5 Units V V V V/ns Input Timing Measurement Reference Level(3) NOTES: 1. A nominal 2.5V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A nominal 1.25V crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 2.5V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. SINGLE-ENDED INPUT AC TEST CONDITIONS FOR 2.5V LVTTL Symbol VIH VIL VTHI tR, tF Parameter Input HIGH Voltage Input LOW Voltage Input Timing Measurement Reference Level Input Signal Edge Rate(2) (1) Value VDD 0 VDD/2 2 Units V V V V/ns NOTES: 1. A nominal 1.25V timing measurement reference level is specified to allow constant, repeatable results in an automatic test equipment (ATE) environment. 2. The input signal edge rate of 2V/ns or greater is to be maintained in the 10% to 90% range of the input waveform. 13 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR 1.8V LVTTL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage DC Input Voltage VIN Single-Ended Inputs(2) VIH DC Input HIGH DC Input LOW VIL Differential Inputs VDIF DC Differential Voltage(3,9) VCM DC Common Mode Input Voltage(4,9) VIH DC Input HIGH(5,6,9) VIL DC Input LOW(5,7,9) Single-Ended Reference Voltage(5,9) VREF Output Characteristics VOH Output HIGH Voltage VOL Output LOW Voltage Test Conditions VDD = 2.7V VI = VDDQ/GND VDD = 2.7V VI = GND/VDDQ VDD = 2.3V, IIN = -18mA Min. -- -- -- - 0.3 1.073(10) -- 0.2 825 VREF + 100 -- -- IOH = -6mA IOH = -100A IOL = 6mA IOL = 100A VDDQ - 0.4 VDDQ - 0.1 -- -- Typ.(8) -- -- - 0.7 Max 5 5 - 1.2 VDDQ + 0.3 -- 0.683(11) -- 975 -- VREF - 100 -- -- -- 0.4 0.1 Unit A V V V V V mV mV mV mV V V V V 900 900 NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. For 1.8V LVTTL single-ended operation, the RxS pin is MID and REF[1:0]/VREF[1:0] is left floating. If TxS is MID, FB/VREF2 should be left floating. 3. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. Differential mode only. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW input. The AC differential voltage must be achieved to guarantee switching to a new state. 4. VCM specifies the maximum allowable range of (VTR + VCP) /2. Differential mode only. 5. For single-ended operation in differential mode, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. The input is guaranteed to toggle within 200mV of VREF[1:0] when VREF[1:0] is constrained within +600mV and VDDI-600mV, where VDDI is the nominal 1.8V power supply of the device driving the REF[1:0] input. To guarantee switching in voltage range specified in the JEDEC 1.8V LVTTL interface specification, VREF[1:0] must be maintained at 900mV with appropriate tolerances. 6. Voltage required to maintain a logic HIGH, single-ended operation in differential mode. 7. Voltage required to maintain a logic LOW, single-ended operation in differential mode. 8. Typical values are at VDD = 2.5V, VDDQ = 1.8V, +25C ambient. 9. The reference clock input is capable of HSTL, eHSTL, LVEPECL, 1.8V or 2.5V LVTTL operation independent of the device output. (See Input/Output Selection table.) 10. This value is the worst case minimum VIH over the specification range of the 1.8V power supply. The 1.8V LVTTL specification is VIH = 0.65 * VDD where VDD is 1.8V 0.15V. However, the LVTTL translator is supplied by a 2.5V nominal supply on this part. To ensure compliance with the specification, the translator was designed to accept the calculated worst case value ( VIH = 0.65 * [1.8 - 0.15V]) rather than reference against a nominal 1.8V supply. 11. This value is the worst case maximum VIL over the specification range of the 1.8V power supply. The 1.8V LVTTL specification is VIL = 0.35 * VDD where VDD is 1.8V 0.15V. However, the LVTTL translator is supplied by a 2.5V nominal supply on this part. To ensure compliance with the specification, the translator was designed to accept the calculated worst case value ( VIL = 0.35 * [1.8 + 0.15V]) rather than reference against a nominal 1.8V supply. 14 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS FOR 1.8V LVTTL OUTPUTS(1) Symbol IDDQ Parameter Quiescent VDD Power Supply Current(3) Test Conditions(2) VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDDQ = Max., REF = LOW, PD = HIGH, nSOE = LOW, PLL_EN = HIGH, DS[1:0] = MM, nF[2:1] = LH, FBF[2:1] = LH, Outputs enabled, All outputs unloaded VDD = Max., PD = LOW, nSOE = LOW, PLL_EN = HIGH VDD = Max., VDDQ = Max., CL = 0pF VDD = Max., VDDQ = Max., CL = 0pF VDDQ = 1.8V., FVCO = 100MHz, CL = 15pF VDDQ = 1.8V., FVCO = 250MHz, CL = 15pF VDDQ = 1.8V., FVCO = 100MHz, CL = 15pF VDDQ = 1.8V., FVCO = 250MHz, CL = 15pF Typ. 15 Max 25 Unit mA IDDQQ Quiescent VDDQ Power Supply Current(3) 1.5 50 A IDDPD IDDD IDDDQ ITOT ITOTQ Power Down Current Dynamic VDD Power Supply Current per Output Dynamic VDDQ Power Supply Current per Output Total Power VDD Supply Current(4) Total Power VDDQ Supply Current(4) 0.5 16 22 40 70 55 135 3 25 30 60 105 85 205 mA A/MHz A/MHz mA mA NOTES: 1. These power consumption characteristics are for all the valid input interfaces and cover the worst case input and output interface combinations. 2. The termination resistors are excluded from these measurements. 3. If the differential input interface is used, the true input is held LOW and the complementary input is held HIGH. 4. FS = HIGH. DIFFERENTIAL INPUT AC TEST CONDITIONS FOR 1.8V LVTTL Symbol VDIF VX VTHI tR, tF Parameter Input Signal Swing (1) Value VDDI VDDI/2 Crossing Point 1.8 Units V mV V V/ns Differential Input Signal Crossing Point(2) Input Timing Measurement Reference Level(3) Input Signal Edge Rate(4) NOTES: 1. VDDI is the nominal 1.8V supply (1.8V 0.15V) of the part or source driving the input. A nominal 1.8V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A nominal 900mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 1.8V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. SINGLE-ENDED INPUT AC TEST CONDITIONS FOR 1.8V LVTTL Symbol VIH VIL VTHI tR, tF Parameter Input HIGH Voltage Input LOW Voltage Input Timing Measurement Reference Level(2) Input Signal Edge Rate(3) (1) Value VDDI 0 VDDI/2 2 Units V V mV V/ns NOTES: 1. VDDI is the nominal 1.8V supply (1.8V 0.15V) of the part or source driving the input. 2. A nominal 900mV timing measurement reference level is specified to allow constant, repeatable results in an automatic test equipment (ATE) environment. 3. The input signal edge rate of 2V/ns or greater is to be maintained in the 10% to 90% range of the input waveform. 15 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE AC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Symbol FNOM tRPW tFPW tSK(O) tSK1() tSK2() tSK1(INV) tSK2(INV) tSK(PR) t() tODCV tORISE tOFALL tL tL() tL(PD) tL(REFSEL1) tL(REFSEL2) tJIT(CC) tJIT(PER) tJIT(HP) tJIT(DUTY) VOX Parameter VCO Frequency Range Reference Clock Pulse Width HIGH or LOW Feedback Input Pulse Width HIGH or LOW Output Skew (Rise-Rise, Fall-Fall, Nominal)(1,2) Multiple Frequency Skew (Rise-Rise, Fall-Fall, Nominal-Divided, Divided-Divided)(1,2,3) Multiple Frequency Skew (Rise-Fall, Nominal-Divided, Divided-Divided)(1,2,3) Inverting Skew (Nominal-Inverted)(1,2) Inverting Skew (Rise-Rise, Fall-Fall, Rise-Fall, Inverted-Divided)(1,2,3) Process Skew(1,2,4) REF Input to FB Static Phase Offset(5) Output Duty Cycle Variation from 50%(11,12) 1.8V LVTTL 2.5V LVTTL Output Rise Time(6) HSTL / eHSTL / 1.8V LVTTL 2.5V LVTTL Output Fall Time(6) HSTL / eHSTL / 1.8V LVTTL 2.5V LVTTL Power-up PLL Lock Time(7) PLL Lock Time After Input Frequency Change(7) PLL Lock Time After Asserting PD Pin(7) PLL Lock Time After Change in REF_SEL(7,9) PLL Lock Time After Change in REF_SEL (REF1 and REF0 are different frequency)(7) Cycle-to-Cycle Output Jitter (peak-to-peak)(2,8) Period Jitter (peak-to-peak)(2,8) Half Period Jitter (peak-to-peak)(2,8,10) Duty Cycle Jitter (peak-to-peak)(2,8) HSTL and eHSTL Differential True and Complementary Output Crossing Voltage Level Min. Typ. Max Unit see VCO Frequency Range Select Table 1 -- -- ns 1 -- -- ns -- -- 100 ps -- -- 100 ps -- -- 300 ps -- -- 300 ps -- -- 300 ps -- -- 300 ps -100 -- 100 ps -375 -- 375 ps -275 -- 275 -- -- 1.2 ns -- -- 1 -- -- 1.2 ns -- -- 1 -- -- 1 ms -- -- 1 ms -- -- 1 ms -- -- 100 s -- -- 1 ms -- 50 75 ps -- -- -- VDDQ/2 - 150 -- -- -- VDDQ/2 75 125 100 VDDQ/2 + 150 ps ps ps mV NOTES: 1. Skew is the time between the earliest and latest output transition among all outputs when all outputs are loaded with the specified load. 2. For differential LVTTL outputs, the measurement is made at VDDQ/2, where the true outputs are only compared with other true outputs and the complementary outputs are only compared to other complementary outputs. For differential HSTL/eHSTL outputs, the measurement is made at the crossing point (VOX) of the true and complementary signals. 3. There are three classes of outputs: nominal (zero delay), inverted, and divided (divide-by-2 or divide-by-4 mode). 4. tSK(PR) is the output to corresponding output skew between any two devices operating under the same conditions (VDD and VDDQ, ambient temperature, air flow, etc.). 5. t() is measured with REF and FB the same type of input, the same rise and fall times. For TxS/RxS = MID or HIGH, the measurement is taken from VTHI on REF to VTHI on FB. For TxS/RxS = LOW, the measurement is taken from the crosspoint of REF/REF to the crosspoint of FB/FB. All outputs are set to zero delay, FB input divider is set to divide-by-one, and FS = HIGH. 6. Output rise and fall times are measured between 20% to 80% of the actual output voltage swing. 7. tL, tL(), tL(REFSEL1), tL(REFSEL2), and tL(PD) are the times that are required before the synchronization is achieved. These specifications are valid only after VDD/VDDQ is stable and within the normal operating limits. These parameters are measured from the application of a new signal at REF or FB, or after PD is (re)asserted until t() is within specified limits. 8. The jitter parameters are measured with all outputs selected for zero delay, FB input divider is set to divide-by-one, and FS = HIGH. 9. Both REF inputs must be the same frequency, but up to 180 out of phase. 10. For HSTL/eHSTL outputs only. 11. For LVTTL outputs only. 12. tODCV is measured with all outputs selected for zero delay. 16 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE AC DIFFERENTIAL INPUT SPECIFICATIONS(1) Parameter Reference/Feedback Input Clock Pulse Width HIGH or LOW (HSTL/eHSTL outputs)(2) Reference/Feedback Input Clock Pulse Width HIGH or LOW (2.5V / 1.8V LVTTL outputs)(2) HSTL/eHSTL/1.8V LVTTL/2.5V LVTTL VDIF VIH VIL LVEPECL VDIF VIH VIL AC Differential Voltage(3) AC Input HIGH AC Input LOW (4,5) (4,6) Symbol tW Min. 1 1 400 Vx + 200 -- 400 1275 -- Typ. -- -- -- -- -- -- -- -- Max -- -- -- -- Vx - 200 -- -- 875 Unit ns mV mV mV mV mV mV AC Differential Voltage(3) AC Input HIGH (4) AC Input LOW(4) NOTES: 1. For differential input mode, RxS is tied to GND. 2. Both differential input signals should not be driven to the same level simultaneously. The input will not change state until the inputs have crossed and the voltage range defined by VDIF has been met or exceeded. 3. Differential mode only. VDIF specifies the minimum input voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. The AC differential voltage must be achieved to guarantee switching to a new state. 4. For single-ended operation, REF[1:0]/VREF[1:0] is tied to the DC voltage VREF[1:0]. Refer to each input interface's DC specification for the correct VREF[1:0] range. 5. Voltage required to switch to a logic HIGH, single-ended operation only. 6. Voltage required to switch to a logic LOW, single-ended operation only. 17 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE AC TIMING DIAGRAM(1) tRPWL REF REF tRPWH tFPWH FB FB tFPWL tODCV Q Q tODCV tSK(O) OTHER Q OTHER Q tSK(O) tSK1(INV) INVERTED Q INVERTED Q tSK1(INV) tSK2(), tSK2(INV) Q DIVIDED BY 2 Q DIVIDED BY 2 tSK2(INV) tSK2() tSK1(), tSK2(INV) Q DIVIDED BY 4 Q DIVIDED BY 4 tSK1() NOTE: 1. The AC TIMING DIAGRAM applies to PE = VDD. For PE = GND, the negative edge of FB aligns with the negative edge of REF[1:0], divided outputs change on the negative edge of REF[1:0], and the positive edges of the divide-by-2 and divide-by-4 signals align. 18 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE JITTER AND OFFSET TIMING WAVEFORMS nQ, QFB nQ, QFB tcycle n tcycle n + 1 tjit(cc) = tcycle n tcycle n+1 Cycle-to-Cycle jitter REF[1:0] REF[1:0] FB FB t(O)n t(O)n + 1 t(O) = n=N 1 N (N is a large number of samples) t(O)n Static Phase Offset NOTE: 1. Diagram for PE = H and TxS/RxS = L. 19 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE JITTER AND OFFSET TIMING WAVEFORMS nQ, QFB nQ, QFB tW(MIN) tW(MAX) tJIT(DUTY) = tW(MAX) - tW(MIN) Duty-Cycle Jitter nQ, QFB nQ, QFB tcycle n nQ, QFB nQ, QFB 1 fo 1 fo tjit(per) = tcycle n Period jitter nQ, QFB nQ, QFB thalf period n nQ, QFB nQ, QFB 1 fo thalf period n+1 tjit(hper) = thalf period n Half-Period jitter 20 1 2*f o IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND CONDITIONS VDDI R1 VIN 3 inch, ~50 Transmission Line VDD R2 VDDI REF[1:0] VDDQ Pulse Generator VIN 3 inch, ~50 Transmission Line D.U.T. R1 REF[1:0] R2 Test Circuit for Differential Input(1) DIFFERENTIAL INPUT TEST CONDITIONS Symbol R1 R2 VDDI VDD = 2.5V 0.2V 100 100 VCM*2 HSTL: Crossing of REF[1:0] and REF[1:0] eHSTL: Crossing of REF[1:0] and REF[1:0] VTHI LVEPECL: Crossing of REF[1:0] and REF[1:0] 1.8V LVTTL: VDDI/2 2.5V LVTTL: VDD/2 NOTE: 1. This input configuration is used for all input interfaces. For single-ended testing, the REF[1:0] must be left floating. For testing single-ended in differential input mode, the VIN should be floating. Unit V V 21 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE VDD VDDQ VDDQ VDDQ REF[1:0] nQ R1 VDDQ R1 D.U.T. nQ FB FB QFB QFB CL R2 R1 VDD VDDQ CL REF[1:0] QFB VDDQ R2 D.U.T. CL R2 FB FB R1 QFB CL SW1 R2 SW1 Test Circuit for Differential Outputs Test Circuit for Differential Feedback DIFFERENTIAL OUTPUT TEST CONDITIONS Symbol CL R1 R2 VOX VTHO SW1 VDD = 2.5V 0.2V VDDQ = Interface Specified 15 100 100 HSTL: Crossing of nQ and nQ eHSTL: Crossing of nQ and nQ 1.8V LVTTL: VDDQ/2 2.5V LVTTL: VDDQ/2 TxS = MID or HIGH TxS = LOW Open Closed V pF V Unit DIFFERENTIAL FEEDBACK TEST CONDITIONS Symbol CL R1 R2 VOX VTHO SW1 VDD = 2.5V 0.2V VDDQ = Interface Specified 15 100 100 HSTL: Crossing of QFB and QFB eHSTL: Crossing of QFB and QFB 1.8V LVTTL: VDDQ/2 2.5V LVTTL: VDDQ/2 TxS = MID or HIGH TxS = LOW Open Closed V pF V Unit 22 IDT5T2110 2.5V ZERO DELAY PLL DIFFERENTIAL CLOCK DRIVER TERACLOCK INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDT XXXXX Device Type XX Package X Package I -40C to +85C (Industrial) BB NL Plastic Ball Grid Array Thermally Enhanced Plastic Very Fine Pitch Quad Flat No Lead Package 2.5V Zero Delay PLL Differential Clock Driver Teraclock 5T2110 CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com for Tech Support: logichelp@idt.com (408) 654-6459 23 |
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