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ICS557-01 Datasheet(PDF) 7 Page - Integrated Device Technology |
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ICS557-01 Datasheet(HTML) 7 Page - Integrated Device Technology |
7 / 10 page ICS557-01 PCI-EXPRESS GEN1 CLOCK SOURCE PCIE IDT® PCI-EXPRESS GEN1 CLOCK SOURCE 7 ICS557-01 REV P 072512 AC Electrical Characteristics - CLK/CLK Unless stated otherwise, VDD=3.3 V ±5%, Ambient Temperature -40 to +85 ° C 1 Test setup is R L=50 ohms with 2 pF, RR = 475Ω (1%). 2 Measurement taken from a single-ended waveform. 3 Measurement taken from a differential waveform. 4 Measured at the crossing point where instantaneous voltages of both CLKOUT and CLKOUT are equal. 5 CLKOUT pins are tri-stated when OE is low asserted. CLKOUT is driven differential when OE is high. Thermal Characteristics (8-pin SOIC) Parameter Symbol Conditions Min. Typ. Max. Units Input Frequency 25 MHz Output Frequency 100 MHz Output High Voltage1,2 VOH 660 700 850 mV Output Low Voltage1,2 VOL -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 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 Duty Cycle1,3 45 55 % Output Enable Time5 All outputs 30 µs Output Disable Time5 All outputs 30 µs Stabilization Time tSTABLE From power-up VDD=3.3 V 3.0 ms Parameter Symbol Conditions Min. Typ. Max. Units Thermal Resistance Junction to Ambient θJA Still air 150 ° C/W θJA 1 m/s air flow 140 ° C/W θJA 3 m/s air flow 120 ° C/W Thermal Resistance Junction to Case θJC 40 ° C/W |
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