HD74HC221 Просмотр технического описания (PDF) - Renesas Electronics

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HD74HC221

Dual Monostable Multivibrators (with Schmitt Trigger Input)

Renesas Electronics 

HD74HC221

Waveforms

• Waveform-1

Input A

Input B

Input CLR

tf

90 %

50 %

10 %

tr

10 %

90 %

50 %

tr

tf

tr

10 %

90 %

50 %

90 %

50 %

10 %

tPLH (trigger)

tw (L)

tPHL

90 %

50 %

10 %

Output Q

50 %

tPHL (trigger)

50 %

tPLH

Output Q

50 %

50 %

VCC

GND

VCC

GND

VCC

GND

VOH

VOL

VOH

VOL

Notes : 1. Input pulse : PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns

2. The output are measured one at a time with one transition per measurement.

Rev.2.00 Jan 31, 2006 page 5 of 7

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