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Precision EdgeTM Micrel SY100EP111U 2.5V/3.3V 1:10 DIFFERENTIAL Precision EdgeTM SY100EP111U LVPECL/LVECL/HSTL CLOCK DRIVER
FEATURES
s 2.5V and 3.3V power supply options s Guaranteed AC parameters over temperature: * fMAX = 3GHz * < 25ps output-to-output skew * < 250ps tr / tf * < 400ps propagation delay s Wide temperature range: -40C to +85C s Differential design s VBB output for single-ended input applications s Fully compatible with industry standard 100K I/O levels s Available in 32-pin TQFP package
Precision EdgeTM
DESCRIPTION
The SY100EP111U is a high-speed, low skew 1-to-10 differential fanout buffer designed for clock distribution in new, high-performance systems. The internal 2:1 mux allows the input to select between two differential clock sources. The device is specifically designed for low skew. The interconnect scheme and metal layout are carefully optimized for minimal gate-to-gate skew within the device. Wafer characterization and process control ensure consistent distribution of propagation delay from lot to lot. The VBB output is intended for use as a reference voltage for single-ended reception of ECL signals to that device only. When using V BB for this purpose, it is recommended that VBB is decoupled to VCC via a 0.01F capacitor.
BLOCK DIAGRAM
Q0 /Q0 Q1 /Q1 Q2 /Q2 Q3 CLK0 VEE /CLK0
75k 75k 75k
/Q3 0 Q4 /Q4 Q5 /Q5 VEE
75k
VEE CLK1
VCC 1
Q6 /Q6 Q7 /Q7
/CLK1
75k 75k
VEE CLK_SEL
VCC
75k
Q8 /Q8 VBB Q9 /Q9
VEE
Precision Edge is a trademark of Micrel, Inc. M9999-070104 hbwhelp@micrel.com or (408) 955-1690
Rev.: E Amendment: /1
1
Issue Date: July 2004
Micrel
Precision EdgeTM SY100EP111U
PACKAGE/ORDERING INFORMATION
VCC VCC
Ordering Information
Part Number Package Type T32-1 T32-1 Operating Range Industrial Industrial Package Marking 100EP111UTI 100EP111UTI SY100EP111UTI SY100EP111UTITR(1)
Note: 1. Tape and Reel.
/Q0
/Q1
VCC CLK_SEL CLK0 /CLK0 VBB CLK1 /CLK1 VEE
1 2 3 4 5 6 7 8
32 31 30 29 28 27 26 25 24 23 22
/Q2
Q0
Q1
Q2
Q3 /Q3 Q4 /Q4 Q5 /Q5 Q6 /Q6
Top View TQFP T32-1
21 20 19 18
17 9 10 11 12 13 14 15 16
/Q9 Q9 /Q8 Q8 Q7 VCC VCC /Q7
32-Pin TQFP (T32-1)
PIN NAMES
Pin CLK0, /CLK0 Function LVPECL, LVECL, HSTL Clock Inputs: CLK0 input includes a 75k pull-down. Default is low if left floating. /CLK0 includes an internal 75k pull-up and pull-down. Default state is VCC/2. LVPECL, LVECL, HSTL Clock Inputs: CLK input includes a 75k pull-down. Default is low if left floating. /CLK includes an internal 75k pull-up and pull-down. Default state is VCC/2. LVPECL/LVECL Outputs. Complementary LVPECL/LVECL Outputs. LVPECL/LVECL Clock Select Input: Internal 75k resistor connected to VEE. When left floating, the default condition is LOW. Reference Voltage: AC coupled or singleended input applications. Positive Power Supply: Bypass with 0.1F// 0.01F low ESR capacitors. Negative Power Supply: LVPECL operation, connect to GND.
FUNCTION TABLE
CLK_SEL 0 1 Active Input CLK0, /CLK0 CLK1, /CLK1
CLK1, /CLK1
Q0 to Q9 /Q0 to /Q9 CLK_SEL
VBB VCC VEE
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Precision EdgeTM SY100EP111U
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC - VEE VIN IOUT IBB TA Tstore JA JC Rating Power Supply Voltage Input Voltage (VCC = 0V, VIN not more negative than VEE) Input Voltage (VEE = 0V, VIN not more positive than VCC) Output Current VBB Sink/Source Current(2) Operating Temperature Range Storage Temperature Range Package Thermal Resistance (Junction-to-Ambient) Package Thermal Resistance (Junction-to-Case) -Still-Air -500lfpm -Continuous -Surge Value 6.0 -6.0 to 0 +6.0 to 0 50 100 0.5 -40 to +85 -65 to +150 50 42 20 Unit V V mA mA C C C/W C/W
Note 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 RATlNG conditions for extended periods may affect device reliability. Note 2. Due to the limited drive capability, use for inputs of same package only.
DC ELECTRICAL CHARACTERISTICS(1)
TA = -40C Symbol VCC Parameter Power Supply Voltage (LVPECL) (LVECL) Power Supply Current Input HIGH Current Input LOW Current CLK0, CLK1 /CLK0, /CLK1 Input Capacitance Min. 2.375 -3.8 -- -- 0.5 -150 -- Typ. -- -- 55 -- -- -- -- Max. Min. TA = +25C Typ. -- -- 70 -- -- -- 2 Max. Min. TA = +85C Typ. -- -- 85 -- -- -- -- Max. 3.8 -2.375 120 150 -- -- -- Unit V V mA A A A pF VIN = VIH VIN = VIL VIN = VIL Condition
3.8 2.375 -2.375 -3.8 120 150 -- -- -- -- -- 0.5 -150 --
3.8 2.375 -2.375 -3.8 120 150 -- -- -- -- -- 0.5 -150 --
IEE IIH IIL
CIN
Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
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Micrel
Precision EdgeTM SY100EP111U
LVPECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 3.3V 10%; VEE = 0V
TA = -40C Symbol VIH VIL VOL VOH VBB VIHCMR Parameter Input HIGH Voltage (Single-Ended) Input LOW Voltage (Single-Ended) Output LOW Voltage Output HIGH Voltage Reference Voltage(2) Input HIGH Voltage Common Mode Range(3) Min. 2135 1355 1355 2155 1775 1.2 Typ. -- -- 1480 2280 1875 -- Max. 2420 1675 1605 2405 1975 VCC Min. 2135 1355 1355 2155 1775 1.2 TA = +25C Typ. -- -- 1480 2280 1875 -- Max. 2420 1675 1605 2405 1975 VCC Min. 2135 1355 1355 2155 1775 1.2 TA = +85C Typ. -- -- 1480 2280 1875 -- Max. 2420 1675 1605 2405 1975 VCC Unit mV mV mV 50 to VCC-2V mV 50 to VCC-2V mV V Condition
Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies 1:1 with VCC. Note 2. Single-ended input operation is limited VCC 3.0V in LVPECL mode. VBB reference varies 1:1 with VCC. Note 3. VIHCMR (Min) varies 1:1 with VEE, VIHCMR (Max) varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal.
LVPECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 2.5V 5%, VEE = 0V
TA = -40C Symbol VIH VIL VOL VOH VIHCMR Parameter Input HIGH Voltage (Single-ended) Input LOW Voltage (Single-ended) Output LOW Voltage Output HIGH Voltage Input HIGH Voltage Common Mode Range(2) Min. 1335 555 555 1355 1.2 Typ. -- -- 680 1480 -- Max. 1620 875 805 1605 VCC Min. 1335 555 555 1355 1.2 TA = +25C Typ. -- -- 680 1480 -- Max. 1620 875 805 1605 VCC Min. 1335 555 555 1355 1.2 TA = +85C Typ. -- -- 680 1480 -- Max. 1620 875 805 1605 VCC Unit mV mV mV 50 to VCC-2V mV 50 to VCC-2V V Condition
Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies 1:1 with VCC. Note 2. VIHCMR (Min) varies 1:1 with VEE, VIHCMR (Max) varies 1:1 with VCC. The VIHCMR range is referenced to the most positive side of the differential input signal.
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Micrel
Precision EdgeTM SY100EP111U
LVECL DC ELECTRICAL CHARACTERISTICS(1)
VEE = -2.375V to -3.8V; VCC = 0V
TA = -40C Symbol VIL VIH VOL VOH VBB VIHCMR Parameter Input LOW Voltage (Single-ended) Input HIGH Voltage (Single-ended) Output LOW Voltage Output HIGH Voltage Output Reference Voltage(2) Min. -1945 -1165 Typ. -- -- Max. Min. TA = +25C Typ. -- -- Max. Min. TA = +85C Typ. -- -- Max. -1625 -0880 Unit mV mV mV 50 to VCC-2V mV 50 to VCC-2V mV V Condition
-1625 -1945 -0880 -1165
-1625 -1945 -0880 -1165
-1945 -1820 -1695 -1945 -1820 -1695 -1945 -1820 -1695 -1145 -1020 -0895 -1145 -1020 -0895 -1145 -1020 -0895 -1525 -1425 -1325 -1525 -1425 -1325 -1525 -1425 -1325 VEE +1.2 0.0 VEE +1.2 0.0 VEE +1.2 0.0
Input HIGH Voltage Common Mode Range(3)
Note 1. 100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Note 2. Note 3. Single-ended input operation is limited VEE -3.0V in LVECL mode. VIHCMR (min) varies 1:1 with VEE. The VIHCMR range is referenced to the most positive side of the differential input signal.
HSTL DC ELECTRICAL CHARACTERISTICS
VCC = 2.375V to 3.8V; VEE = 0V
TA = -40C Symbol VIH VIL VX Parameter Input HIGH Voltage Input LOW Voltage Input Crossover Voltage Min. 1200 -- 680 Typ. -- -- -- Max. -- 400 900 Min. 1200 -- 680 TA = +25C Typ. -- -- -- Max. -- 400 900 Min. 1200 -- 680 TA = +85C Typ. -- -- -- Max. -- 400 900 Unit mV mV mV
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Precision EdgeTM SY100EP111U
AC ELECTRICAL CHARACTERISTICS
(LVPECL) VCC = 2.375 to 3.8V, VEE = 0V; (LVECL) VEE = -2.375V to -3.8V, VCC = 0V
TA = -40C Symbol fMAX tPLH tPHL tSKEW tJITTER VPP tr, tf
Note 1. Note 2. Note 3. Note 4.
TA = +25C Max. -- 400 25 150 <1 1200 250 Min. 3 250 -- -- -- 150 100 Typ. -- 350 20 85 0.2 800 170 Max. -- 400 25 150 <1 1200 250 Min. 3 250 -- -- -- 150 100
TA = +85C Typ. -- 350 20 85 0.2 800 170 Max. -- 400 25 150 <1 1200 250 Unit GHz ps ps ps ps mV ps
(2) (3)
Parameter Maximum Frequency(1) (Diff.)
Min. 3 250 -- -- -- 150 100
Typ. -- 350 20 85 0.2 800 170
Condition
Propagation Delay Within-Device Skew Part-to-Part Skew
Cycle-to-Cycle Jitter (rms) Minimum Input Swing(4)
Output Rise/Fall Time (20% to 80%)
Measured with 750mV clock signal, 50% duty cycle. All loading with a 50 to VCC -2.0V. Input clock to any output (Q0 to Q9); Differential. Measured for same transitions. See "Timing Waveform."
TIMING WAVEFORM
CLK(0:1) 150mV to 1200mV /CLK(0:1)
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Precision EdgeTM SY100EP111U
TYPICAL CHARACTERISTICS
900
OUTPUT AMPLITUDE (mVp-p)
Frequency Response vs. Output Amplitude
OUTPUT AMPLITUDE (mVp-p)
800 700 600 500 400 300
0 1000 1500
VSUP = 2.5V VDIFFIN = 800mV
900 800 700 600 500 400 300
0
Frequency Response vs. Output Amplitude
VSUP = 3.3V VDIFFIN = 800mV
2000
2500
3000
3500
4000
500
1000
1500
2000
2500
3000
3500
FREQUENCY (MHz)
FREQUENCY (MHz)
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4000
500
200
200
Micrel
Precision EdgeTM SY100EP111U
TERMINATION RECOMMENDATIONS
+3.3V
+3.3V
ZO = 50 ZO = 50
R1 130
R1 130
+3.3V
R2 82
R2 82
Vt = VCC -2V
Figure 1. Parallel Termination-Thevenin Equivalent
Note 1. For +2.5V systems: R1 = 250, R2 = 62.5
+3.3V
Z = 50 Z = 50 50 50
+3.3V
"source" 46 to 50
Rb
"destination"
Figure 2. Three-Resistor "Y-Termination"
Note 1. Note 2. Note 3. Power-saving alternative to Thevenin termination. Place termination resistors as close to destination inputs as possible. Rb resistor sets the DC bias voltage, equal to Vt.
+3.3V +3.3V R1 130 ZO = 50 /Q Vt = VCC -2V R2 82
+3.3V R1 130 50 VBB R2 82 0.01F +3.3V +3.3V
Q
Figure 3. Terminating Unused I/O
Note 1. Note 2. Note 3. Note 4. Unused output (/Q) must be terminated to balance the output. Micrel's differential I/O logic devices include a VBB reference pin . Connect unused input through 50 to VBB. Bypass with a 0.01F capacitor to VCC, not GND. For +2.5V systems: R1 = 250, R2 = 62.5.
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Micrel
Precision EdgeTM SY100EP111U
32 LEAD THIN QUAD FLATPACK (T32-1)
Rev. 01
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
FAX
USA
+ 1 (408) 944-0800
+ 1 (408) 474-1000
WEB
http://www.micrel.com
The information furnished by Micrel in this datasheet 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 at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2004 Micrel, Incorporated. M9999-070104 hbwhelp@micrel.com or (408) 955-1690
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