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| SY54016R Low Voltage 1.2V/1.8V CML Differential Line Driver/Receiver with Fail Safe Input 3.2Gbps, 2.5GHz General Description The SY54016R is a fully differential, low voltage 1.2V/1.8V CML Line Driver/Receiver with Fail-Safe Input. The SY54016R can process clock signals as fast as 2.5GHz or data patterns up to 3.2Gbps. The differential input includes Micrel's unique, 3-pin input termination architecture that interfaces to LVPECL, LVDS or CML differential signals, as small as 100mV (200mVPP) without any level-shifting or termination resistor networks in the signal path. For AC-coupled input interface applications, an internal voltage reference is provided to bias the VT pin. The outputs are CML, with extremely fast rise/fall times guaranteed to be less than 95ps. The SY54016R operates from a 2.5V 5% core supply and a 1.8V or 1.2V 5% output supply and is guaranteed over the full industrial temperature range (-40C to +85C). The SY54016R is part of Micrel's high-speed, Precision Edge(R) product line. Data sheets and support documentation can be found on Micrel's web site at: www.micrel.com. Precision Edge(R) Features * 1.2V/1.8V CML Line Driver/Receiver with Fail-Safe Input * Guaranteed AC performance over temperature and voltage: - DC-to- > 3.2Gbps throughput - <370ps propagation delay (IN-to-Q) - <95ps rise/fall times * Ultra-low jitter design - <1psRMS random jitter * High-speed CML outputs * 2.5V 5% , 1.8/1.2V 5% power supply operation * Industrial temperature range: -40C to +85C * Available in 8-pin (2mm x 2mm) MLF(R) package Applications * * * * Data Distribution: OC-48, OC-48+FEC SONET clock and data distribution Fibre Channel clock and data distribution Gigabit Ethernet clock and data distribution Functional Block Diagram Markets * * * * * * Storage ATE Test and measurement Enterprise networking equipment High-end servers Metro area network equipment Precision Edge is a registered trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technology. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com June 2010 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Ordering Information(1) Part Number SY54016RMGTR(2) Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC Electricals only. 2. Tape and Reel. Package Type MLF-8 Operating Range Industrial Package Marking 016R with Pb-Free bar-line indicator Lead Finish NiPdAu Pb-Free Pin Configuration 8-Pin MLF(R) (MLF-8) Pin Description Pin Number 2,3 Pin Name IN, /IN Pin Function Differential Input: This input pair is the differential signal input to the device. Input accepts differential signals as small as 100mV (200mVPP). Each input pin internally terminates with 50 to the VT pin. If the input swing falls below a certain threshold (typical 30mV), the Fail Safe Input (FSI) feature will guarantee a stable output by latching the output to its last valid state. Input Termination Center-Tap: Each side of the differential input pair terminates to VT pin. This pin provides a center-tap to a termination network for maximum interface flexibility. An internal high impedance resistor divider biases VT to allow input AC coupling. For AC-coupling, bypass VT with 0.1F low ESR capacitor to VCC. See "Interface Applications" subsection and Figure 2a. Positive Power Supply: Bypass with 0.1uF//0.01uF low ESR capacitors as close to the VCC pin as possible. Supplies input and core circuitry. Output Supply: Bypass with 0.1uF//0.01uF low ESR capacitors as close to the VCCO pin as possible. Supplies the output buffer. Ground: Exposed pad must be connected to a ground plane that is the same potential as the ground pin. CML Differential Output Pair: Differential buffered copy of the input signal. The output swing is typically 390mV. See "Interface Applications" subsection for termination information. 1 VT 8 5 4 7,6 VCC VCCO GND, Exposed pad Q, /Q June 2010 2 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Absolute Maximum Ratings(1) Supply Voltage (VCC) ............................... -0.5V to +3.0V Supply Voltage (VCCO) ............................. -0.5V to +2.7V VCC - VCCO ...............................................................<1.8V VCCO - VCC ...............................................................<0.5V Input Voltage (VIN) .......................................-0.5V to VCC CML Output Voltage (VOUT) ............... 0.6V to VCCO+0.5V Current (VT) Source or sink current on VT pin .................100mA Input Current Source or sink current on (IN, /IN).................50mA Maximum operating Junction Temperature .......... 125C Lead Temperature (soldering, 20sec.) .................. 260C Storage Temperature (Ts) ....................-65C to +150C Operating Ratings(2) Supply Voltage (VCC)..........................2.375V to 2.625V (VCCO)..................... .....1.14V to 1.9V Ambient Temperature (TA) ................... -40C to +85C Package Thermal Resistance(3) MLF(R) Still-air ( JA) ........................................... 93C/W Junction-to-board ( JB) .......................... 56C/W DC Electrical Characteristics(4) TA = -40C to +85C, unless otherwise stated. Symbol VCC Parameter Power Supply Voltage Range Condition VCC VCCO VCCO Max. VCC No Load. Max. VCCO 45 90 IN, /IN VIL with VIH = 1.2V IN, /IN VIL with VIH = 1.14V, (1.2V-5%) see Figure 3a see Figure 3b 1.2 0.2 1.14 0.66 0.1 0.2 30 Min 2.375 1.14 1.7 Typ 2.5 1.2 1.8 13 16 50 100 Max 2.625 1.26 1.9 19 21 55 110 VCC VIH-0.1 VCC VIH-0.1 1.0 2.0 100 1.28 Units V V V mA mA V V V V V V mV V ICC ICCO RIN RDIFF_IN VIH VIL VIH VIL VIN VDIFF_IN VIN_FSI VT_IN Notes: Power Supply Current Power Supply Current Input Resistance (IN-to-VT, /IN-to-VT ) Differential Input Resistance (IN-to-/IN) Input HIGH Voltage (IN, /IN) Input LOW Voltage (IN, /IN) Input HIGH Voltage (IN, /IN) Input LOW Voltage (IN, /IN) Input Voltage Swing (IN, /IN) Differential Input Voltage Swing (|IN - /IN|) Input Voltage Threshold that Triggers FSI Voltage from Input to VT 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. JB and JA values are determined for a 4-layer board in still-air number, unless otherwise stated. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. June 2010 3 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R CML Outputs DC Electrical Characteristics(5) VCCO = 1.14V to 1.26V RL = 50 to VCCO, VCCO = 1.7V to 1.9V, RL = 50 to VCCO or 100 across the outputs, VCC = 2.375V to 2.625V. TA = -40C to +85C, unless otherwise stated. Symbol VOH VOUT VDIFF_OUT ROUT Note: 5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. Parameter Output HIGH Voltage Output Voltage Swing Differential Output Voltage Swing Output Source Impedance Condition RL = 50 to VCCO See Figure 3a See Figure 3b Min VCCO-0.020 300 600 45 Typ VCCO-0.010 390 780 50 Max VCCO 475 950 55 Units V mV mV AC Electrical Characteristics VCCO = 1.14V to 1.26V RL = 50 to VCCO, VCCO = 1.7V to 1.9V, RL = 50 to VCCO or 100 across the outputs, VCC = 2.375V to 2.625V. TA = -40C to +85C, unless otherwise stated. Symbol fMAX tPD Parameter Maximum Frequency Propagation Delay IN-to-Q Condition NRZ Data VOUT > 200mV VIN: 100mV-200mV, Note 6, Figure 1a VIN: >200mV, Note 6, Figure 1a tSkew tJitter tR tF Part-to-Part Skew Random Jitter Output Rise/Fall Times (20% to 80%) Duty Cycle Notes: 6. 7. Propagation delay is measured with input tr/tf 300ps (20% to 80%). Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and no skew at the edges at the respective inputs. VIN >200mV with input tr/tf 300ps (20% to 80%). Min 3.2 Clock 2.5 Typ Max Units Gbps GHz 180 170 300 250 420 370 75 1 ps ps ps psRMS ps % Note 7 At full output swing. Differential I/O 30 47 60 95 53 June 2010 4 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Functional Description Fail-Safe Input (FSI) The input includes a special failsafe circuit to sense the amplitude of the input signal and to latch the output when there is no input signal present, or when the amplitude of the input signal drops sufficiently below 100mVPK (200mVPP), typically 30mVPK. Maximum frequency of the SY54016R is limited by the FSI function. Input Clock Failure Case If the input clock fails to a floating, static, or extremely low signal swing, the FSI function will eliminate a metastable condition and guarantee a stable output. No ringing and no undetermined state will occur at the output under these conditions. Note that the FSI function will not prevent duty cycle distortion in case of a slowly deteriorating (but still toggling) input signal close to the FSI threshold. Due to the FSI function, the propagation delay will depend on rise and fall time of the input signal and on its amplitude. Refer to "Typical Characteristics" for detailed information CML Output Termination with VCCO 1.8V For VCCO of 1.8V, Figure 5a and Figure b, terminate with either 50 to 1.8V or 100 differentially across the outputs. AC- or DC-coupling is fine. Input AC-Coupling The SY54016R input can accept AC-coupling from any driver. Tie VT to VCC with a capacitor as shown in Figures 4c and 4d. VT has an internal high impedance resistor divider as shown in Figure 2a, to provide a bias voltage for AC-coupling. Interface Applications For Input Interface Applications see Figures 4a-f and for CML Output Termination see Figures 5a-d. CML Output Termination with VCCO 1.2V For VCCO of 1.2V, Figure 5a, terminate the output with 50-to-1.2V, DC-coupled, not 100 differentially across the outputs. If AC-coupling is used, Figure 5d, terminate into 50to-1.2V before the coupling capacitor and then connect to a high value resistor to a reference voltage. Do not AC couple with internally terminated receiver. For example, 50 ANY-IN input. AC-coupling will offset the output voltage by 200mV and this offset voltage will be too low for proper driver operation. June 2010 5 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Timing Diagrams Figure 1a. Propagation Delay Figure 1b. Fail-Safe Feature June 2010 6 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Typical Characteristics VCC = 2.5V, GND = 0V, RL = 50 to 1.2V, VIN = 100mV, TA = 25C, unless otherwise stated. June 2010 7 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Functional Characteristics VCC = 2.5V, GND = 0V, VIN = 400mV, RL = 50 to VCCO, Data Pattern: 223-1, TA = 25C, unless otherwise stated. Output Eyes with VCCO = 1.2V Output Eyes with VCCO = 1.8V June 2010 8 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Functional Characteristics VCC = 2.5V, GND = 0V, VIN = 400mV, RL = 50 to VCCO, TA = 25C, unless otherwise stated. June 2010 9 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Input and Output Stage Figure 2a. Simplified Differential Input Buffer Figure 2b. Simplified CML Output Buffer Single-Ended and Differential Swings Figure 3a. Single-Ended Swing Figure 3b. Differential Swing June 2010 10 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Input Interface Applications Figure 4a. CML Interface (DC-Coupled, 1.8V, 2.5V) Figure 4b. CML Interface (DC-Coupled, 1.2V) Figure 4c. CML Interface (AC-Coupled) Figure 4d. LVPECL Interface (AC-Coupled) Figure 4e. LVPECL Interface (DC-Coupled) Figure 4f. LVDS Interface June 2010 11 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R CML Output Termination Figure 5a. 1.2 or 1.8V CML DC-Coupled Termination Figure 5b. 1.8V CML DC-Coupled Termination Figure 5c. CML AC-Coupled Termination (VCCO 1.8V Only) Figure 5d. CML AC-Coupled Termination (VCCO 1.2V Only) Related Product and Support Documents Part Number SY54016AR HBW Solutions Function 3.2Gbps Precision, 1:1 Low Voltage CML Buffer with Internal Termination New Products and Termination Application Notes Datasheet Link http://www.micrel.com/page.do?page=/productinfo/products/sy54016ar.shtml http://www.micrel.com/page.do?page=/productinfo/as/HBWsolutions.shtml June 2010 12 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 Micrel, Inc. SY54016R Package Information 8-Pin MLF(R) (2mm x 2mm) (MLF-8) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2008 Micrel, Incorporated. June 2010 13 M9999-061110-A hbwhelp@micrel.com or (408) 955-1690 |
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