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ICS557-03 Datasheet(PDF) 7 Page - Integrated Device Technology |
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ICS557-03 Datasheet(HTML) 7 Page - Integrated Device Technology |
7 / 10 page ICS557-03 PCI-EXPRESS CLOCK SOURCE PCIE SSCG IDT™ / ICS™ PCI-EXPRESS CLOCK SOURCE 7 ICS557-03 REV K 102907 AC Electrical Characteristics - CLK0/CLK1, CLK0/CLK1 Unless stated otherwise, VDD=3.3 V ±10%, Ambient Temperature -40 to +85 ° C Note 1: Test setup is RL=50 ohms with 2 pF, Rr = 475Ω (1%). Note 2: Measurement taken from a single-ended waveform. Note 3: Measurement taken from a differential waveform. Note 4: Measured at the crossing point where instantaneous voltages of both CLK and CLK are equal. Note 5: CLK pins are tri-stated when OE is low asserted. CLK is driven differential when OE is high. Parameter Symbol Conditions Min. Typ. Max. Units Input Frequency 25 MHz Output Frequency HCSL termination 25 200 MHz LVDS termination 25 100 MHz Output High Voltage1,2 VOH HCSL 660 700 850 mV Output Low Voltage1,2 VOL HCSL -150 0 27 mV Crossing Point Voltage1,2 Absolute 250 350 550 mV Crossing Point Voltage1,2,4 Variation over all edges 140 mV Jitter, Cycle-to-Cycle1,3 80 ps Frequency Synthesis Error All outputs 0 ppm Modulation Frequency Spread spectrum 30 31.5 33 kHz Rise Time1,2 tOR From 0.175 V to 0.525 V 175 332 700 ps Fall Time1,2 tOF From 0.525 V to 0.175 V 175 344 700 ps Rise/Fall Time Variation1,2 125 ps Output to Output Skew 50 ps Duty Cycle1,3 45 55 % Output Enable Time5 All outputs 10 us Output Disable Time5 All outputs 10 us Stabilization Time tSTABLE From power-up VDD=3.3 V 3.0 ms Spread Spectrum Transition Time tSPREAD Stabilization time after spread spectrum changes 3.0 ms |
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