2.5V/3.3V 1:10 DIFFERENTIAL LVPECL/LVECL/HSTL CLOCK DRIVER Micrel, Inc. Precision Edge® SY100EP111U Precision Edge® SY100EP111U FEATURES ■ 2.5V and 3.3V power supply options ■ Guaranteed AC parameters over temperature: • fMAX = 3GHz • < 25ps output-to-output skew • < 250ps tr / tf • < 400ps propagation delay ■ Wide temperature range: –40°C to +85°C ■ Differential design ■ VBB output for single-ended input applications ■ Fully compatible with industry standard 100K I/O levels ■ Available in 32-pin TQFP package Precision Edge® 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 0.01µF capacitor. BLOCK DIAGRAM Q0 /Q0 Q1 /Q1 Q2 /Q2 Q3 /Q3 CLK0 VEE 75kΩ 0 /CLK0 75kΩ VEE Q4 /Q4 75kΩ Q5 VCC /Q5 CLK1 VEE 75kΩ 1 /CLK1 75kΩ VEE Q6 /Q6 75kΩ Q7 VCC /Q7 CLK_SEL Q8 75kΩ VEE /Q8 VBB Q9 /Q9 Precision Edge is a registered trademark of Micrel, Inc. M9999-021511 [email protected] or (408) 955-1690 Rev.: F 1 Amendment: /0 Issue Date: December 2005 Precision Edge® SY100EP111U Micrel, Inc. Ordering Information(1) VCC /Q2 /Q1 Q2 /Q0 Q1 VCC Q0 PACKAGE/ORDERING INFORMATION VCC 1 32 31 30 29 28 27 26 25 24 CLK_SEL 2 CLK0 3 /CLK0 4 Top View TQFP T32-1 20 Q5 /Q5 7 18 Q6 VEE 8 17 9 10 11 12 13 14 15 16 100EP111UTI Sn-Pb T32-1 Industrial 100EP111UTI Sn-Pb SY100EP111UTG(3) T32-1 Industrial 100EP111UTG with Pb-Free Pb-Free bar-line indicator NiPdAu SY100EP111UTGTR(2, 3) T32-1 Industrial 100EP111UTG with Pb-Free Pb-Free bar-line indicator NiPdAu SY100EP111UTGTX(2, 4) T32-1 Industrial 100EP111UTG with Pb-Free Pb-Free bar-line indicator NiPdAu /Q6 VCC Q7 Industrial /Q4 /CLK1 Q8 T32-1 SY100EP111UTITR(2) 21 19 /Q7 SY100EP111UTI /Q3 Q4 6 Q9 Lead Finish 22 5 /Q8 Package Marking 23 VBB /Q9 Operating Range Part Number CLK1 VCC Package Type Q3 Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only. 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. 4. EIA specification orientation. 32-Pin TQFP (T32-1) PIN NAMES Pin CLK0, /CLK0 FUNCTION TABLE Function LVPECL, LVECL, HSTL Clock Inputs: CLK0 input includes a 75kΩ pull-down. Default is low if left floating. /CLK0 includes an internal 75kΩ pull-up and pull-down. Default state is VCC/2. CLK1, /CLK1 LVPECL, LVECL, HSTL Clock Inputs: CLK input includes a 75kΩ pull-down. Default is low if left floating. /CLK includes an internal 75kΩ pull-up and pull-down. Default state is VCC/2. Q0 to Q9 LVPECL/LVECL Outputs. /Q0 to /Q9 Complementary LVPECL/LVECL Outputs. CLK_SEL LVPECL/LVECL Clock Select Input: Internal 75kΩ resistor connected to VEE. When left floating, the default condition is LOW. VBB Reference Voltage: AC coupled or singleended input applications. VCC Positive Power Supply: Bypass with 0.1µF// 0.01µF low ESR capacitors. VEE Negative Power Supply: LVPECL operation, connect to GND. M9999-021511 [email protected] or (408) 955-1690 2 CLK_SEL Active Input 0 CLK0, /CLK0 1 CLK1, /CLK1 Precision Edge® SY100EP111U Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Value Unit 6.0 V –6.0 to 0 +6.0 to 0 V 50 100 mA VCC – VEE Power Supply Voltage VIN Input Voltage (VCC = 0V, VIN not more negative than VEE) Input Voltage (VEE = 0V, VIN not more positive than VCC) IOUT Output Current IBB VBB Sink/Source Current(2) ±0.5 mA TLEAD Lead Temperature (soldering, 20sec.) +260 °C TA Operating Temperature Range –40 to +85 °C Tstore Storage Temperature Range –65 to +150 °C θJA Package Thermal Resistance (Junction-to-Ambient) 50 42 °C/W θJC Package Thermal Resistance (Junction-to-Case) 20 °C/W –Continuous –Surge –Still-Air –500lfpm 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 = –40°C Symbol TA = +25°C Min. Typ. VCC Power Supply Voltage (LVPECL) (LVECL) 2.375 –3.8 — — IEE Power Supply Current — 55 120 — 70 120 IIH Input HIGH Current — — 150 — — IIL Input LOW Current CLK0, CLK1 /CLK0, /CLK1 0.5 –150 — — — — 0.5 –150 — — — — CIN Note 1. Input Capacitance Max. Min. 3.8 2.375 –2.375 –3.8 Typ. TA = +85°C Parameter Typ. Max. Unit — — 3.8 –2.375 V V — 85 120 mA 150 — — 150 µA VIN = VIH — — — — 0.5 –150 — — — — µA µA VIN = VIL VIN = VIL 2 — — — — pF — — Max. Min. 3.8 2.375 –2.375 –3.8 Condition 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. M9999-021511 [email protected] or (408) 955-1690 3 Precision Edge® SY100EP111U Micrel, Inc. LVPECL DC ELECTRICAL CHARACTERISTICS(1) VCC = 3.3V ±10%; VEE = 0V TA = –40°C Symbol TA = +25°C TA = +85°C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition VIH Input HIGH Voltage (Single-Ended) 2135 — 2420 2135 — 2420 2135 — 2420 mV VIL Input LOW Voltage (Single-Ended) 1355 — 1675 1355 — 1675 1355 — 1675 mV VOL Output LOW Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV 50Ω to VCC–2V VOH Output HIGH Voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mV 50Ω to VCC–2V VBB Reference Voltage(2) 1775 1875 1975 1775 1875 1975 1775 1875 1975 mV VIHCMR Input HIGH Voltage Common Mode Range(3) 1.2 — VCC 1.2 — VCC 1.2 — VCC V 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 = –40°C Symbol TA = +25°C TA = +85°C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VIH Input HIGH Voltage (Single-ended) 1335 — 1620 1335 — 1620 1335 — 1620 mV Condition VIL Input LOW Voltage (Single-ended) 555 — 875 555 — 875 555 — 875 mV VOL Output LOW Voltage 555 680 805 555 680 805 555 680 805 mV 50Ω to VCC–2V VOH Output HIGH Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV 50Ω to VCC–2V VIHCMR Input HIGH Voltage Common Mode Range(2) 1.2 — VCC 1.2 — VCC 1.2 — VCC V 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. M9999-021511 [email protected] or (408) 955-1690 4 Precision Edge® SY100EP111U Micrel, Inc. LVECL DC ELECTRICAL CHARACTERISTICS(1) VEE = –2.375V to –3.8V; VCC = 0V TA = –40°C Symbol Parameter Min. Typ. TA = +25°C Max. Min. Typ. TA = +85°C Max. Min. Typ. Max. Unit Condition VIL Input LOW Voltage (Single-ended) –1945 — –1625 –1945 — –1625 –1945 — –1625 mV VIH Input HIGH Voltage (Single-ended) –1165 — –0880 –1165 — –0880 –1165 — –0880 mV VOL Output LOW Voltage –1945 –1820 –1695 –1945 –1820 –1695 –1945 –1820 –1695 mV 50Ω to VCC–2V VOH Output HIGH Voltage –1145 –1020 –0895 –1145 –1020 –0895 –1145 –1020 –0895 mV 50Ω to VCC–2V –1525 –1425 –1325 –1525 –1425 –1325 –1525 –1425 –1325 mV Voltage(2) VBB Output Reference VIHCMR Input HIGH Voltage Common Mode Range(3) VEE +1.2 0.0 VEE +1.2 0.0 VEE +1.2 0.0 V 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. Single-ended input operation is limited VEE ≤ –3.0V in LVECL mode. Note 3. 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 = –40°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VIH Input HIGH Voltage 1200 — — 1200 — — 1200 — — mV VIL Input LOW Voltage — — 400 — — 400 — — 400 mV VX Input Crossover Voltage 680 — 900 680 — 900 680 — 900 mV M9999-021511 [email protected] or (408) 955-1690 5 Precision Edge® SY100EP111U Micrel, Inc. AC ELECTRICAL CHARACTERISTICS (LVPECL) VCC = 2.375 to 3.8V, VEE = 0V; (LVECL) VEE = –2.375V to –3.8V, VCC = 0V TA = –40°C Symbol Parameter Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit 3 — — 3 — — 3 — — GHz 250 350 400 250 350 400 250 350 400 ps Within-Device Skew — 20 25 — 20 25 — 20 25 ps (2) Part-to-Part Skew — 85 150 — 85 150 — 85 150 ps (3) Cycle-to-Cycle Jitter (rms) — 0.2 <1 — 0.2 <1 — 0.2 <1 ps 150 800 1200 150 800 1200 150 800 1200 mV 100 170 250 100 170 250 100 170 250 ps Maximum Frequency(1) tPD Propagation Delay tSKEW (Diff.) Swing(4) VPP Minimum Input t r, t f Output Rise/Fall Time (20% to 80%) Note 1. Note 2. Note 3. Note 4. TA = +85°C Min. fMAX tJITTER TA = +25°C Measured with 750mV clock signal, 50% duty cycle. All loading with a 50Ω 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) M9999-021511 [email protected] or (408) 955-1690 6 Condition Precision Edge® SY100EP111U Micrel, Inc. TYPICAL CHARACTERISTICS 900 FREQUENCY (MHz) 7 4000 3500 3000 300 0 FREQUENCY (MHz) M9999-021511 [email protected] or (408) 955-1690 400 200 4000 3500 3000 2500 2000 1500 0 200 1000 300 500 2500 400 600 2000 500 700 1500 600 VSUP = 3.3V VDIFFIN = 800mV 800 1000 700 Frequency Response vs. Output Amplitude 500 OUTPUT AMPLITUDE (mVp-p) VSUP = 2.5V VDIFFIN = 800mV 800 500 OUTPUT AMPLITUDE (mVp-p) 900 Frequency Response vs. Output Amplitude Precision Edge® SY100EP111U Micrel, Inc. TERMINATION RECOMMENDATIONS +3.3V +3.3V ZO = 50Ω R1 130Ω R1 130Ω +3.3V R2 82Ω R2 82Ω Vt = VCC –2V ZO = 50Ω Figure 1. Parallel Termination–Thevenin Equivalent Note 1. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω +3.3V +3.3V Z = 50Ω Z = 50Ω 50Ω “source” 50 Ω “destination” Rb 46Ω to 50Ω Figure 2. Three-Resistor “Y–Termination” Note 1. Power-saving alternative to Thevenin termination. Note 2. Place termination resistors as close to destination inputs as possible. Note 3. Rb resistor sets the DC bias voltage, equal to Vt. +3.3V +3.3V +3.3V R1 130Ω Q R1 130Ω ZO = 50Ω +3.3V 50Ω /Q VBB Vt = VCC –2V R2 82Ω R2 82Ω 0.01µF +3.3V Figure 3. Terminating Unused I/O Note 1. Unused output (/Q) must be terminated to balance the output. Note 2. Micrel's differential I/O logic devices include a VBB reference pin . Note 3. Connect unused input through 50Ω to VBB. Bypass with a 0.01µF capacitor to VCC, not GND. Note 4. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω. M9999-021511 [email protected] or (408) 955-1690 8 Precision Edge® SY100EP111U Micrel, Inc. 32-PIN THIN QUAD FLATPACK (T32-1) Rev. 01 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 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. © 2005 Micrel, Incorporated. M9999-021511 [email protected] or (408) 955-1690 9