HD74LS163A Datasheet, PDF(9/12 Page) Hitachi Semiconductor – Synchronous 4-bit Binary Counters(synchronous clear)

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HD74LS163A Datasheet, PDF (9/12 Pages) Hitachi Semiconductor – Synchronous 4-bit Binary Counters(synchronous clear)

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HD74LS163A

Waveforms 4

tPHL, (ClearâQ)

Clock

Clear

tTLH

tTHL

90% 90%

10%

tTHL

90%

1.3V

10%

tw (CLR)

â¥ 20ns

10%

1.3V

tTLH

90%

1.3V

10%

tPHL

QA to QD

Note: Input pulse: tTLH â¤ 15 ns, tTHL â¤ 6 ns

1.3V

VOH

VOL

Rev.2.00, Feb.18.2005, page 9 of 11

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