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HD74HC423A Datasheet

  • HD74HC423A

  • Dual Retriggerable Monostable Multivibrators

  • 53.58KB

  • 8頁(yè)

  • HITACHI

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HD74HC423A
Dual Retriggerable Monostable Multivibrators
Description
This multivibrator features output-pulse-duration control by two methods. The basic pulse duration is
programmed by selection of external resistance and capacitance values. Once triggered, the basic pulse
duration may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or
be reduced by use of the overriding clear. The B input is a Schmitt trigger enabling jitter-free triggering
from input signals with slow transition rates.
Features
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High Speed Operation
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High Output Current: Fanout of 10 LSTTL Loads
Wide Operating Voltage: V
CC
= 2 to 6 V
Low Input Current: 1 碌A(chǔ) max
Low Quiescent Supply Current
Function Table
Inputs
Clear
L
X
X
H
H
A
X
H
X
L
H
B
X
X
L
Output
Q
L
L
L
Q
H
H
H

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