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U74AHC640L-R20-T Datasheet(PDF) 6 Page - Unisonic Technologies |
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U74AHC640L-R20-T Datasheet(HTML) 6 Page - Unisonic Technologies |
6 / 7 page U74HC640 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 6 of 7 www.unisonic.com.tw QW-R126-008.A TEST CIRCUIT AND WAVEFORMS(Cont.) VM VIN 0V VOH VOL Voltage Waveforms Propagation Delay and Output Transition Times Input Output tPLH tPHL tPLH tPHL VOH VOL Output 10% 90% tR 10% 90% tF 10% 90% tF 10% 90% tR VM VM VM VM VM VM VIN 0V VOH Input Output tPZH tPHZ tPLZ tPZL VLOAD VOL Output S1 at GND S1 at VLOAD VOH-VΔ VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES 0V VOL+VΔ VM VM VM Notes: 1. CL includes probe and jig capacitance. 2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω, tR=6ns, tF=6ns. 3. tPLH and tPHL are the same as tPD . 4. tPLZ and tPHZ are the same as tDIS . 5. tPZH and tPZL are the same as tEN . |
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