HD74HC4020 Просмотр технического описания (PDF) - Renesas Electronics

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HD74HC4020

14-stage Binary Counter

Renesas Electronics 

HD74HC4020

Waveforms

• Waveform – 1

Reset

Clock

Q1

tf

90%

10%

tf

tf

90%

50% 50%

tw

10%

tw

tPLH

10%

90%

50%

tTLH

90%

50% 50%

10%

tPHL

90%

50%

10%

tTHL

Note : 1. Waveform : PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns

• Waveform – 2

Reset

tr

tf

10%

90%

50%

90%

50%

10%

tw

trem

Clock

tPHL

90%

50%

10%

Any Q

90%

50%

10%

tTHL

Note : 1. Waveform : PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns

VCC

0V

VCC

0V

VOH

VOL

VCC

0V

VCC

0V

VOH

VOL

Rev.2.00 Mar 30, 2006 page 5 of 6

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