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74LV423 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. 74LV423
Description  Dual retriggerable monostable multivibrator with reset
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74LV423 Datasheet(HTML) 4 Page - NXP Semiconductors

 
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Philips Semiconductors
Preliminary specification
74LV423
Dual retriggerable monostable multivibrator
with reset
1997 Feb 04
4
LOGIC DIAGRAM
R
nREXT/CEXT
VCC
Q
Q
RD
RR
CL
CL
VCC
CL
CL
CL
A
B
SV00163
VCC
It is recommended that Pin 6 (2CEXT) and Pin 14 (1CEXT) by externally grounded to Pin 8 (GND)
FUNCTION TABLE
INPUTS
OUTPUTS
nRD
nA
nB
nQ
nQ
L
X
X
L
H
X
H
X
L *
H *
X
X
L
L *
H *
H
L
H
H
NOTES:
*
If the monostable was triggered before this condition was
established, the pulse will continue as programmed.
H = HIGH voltage level
L = LOW voltage level
X = don’t care
↑ = LOW-to-HIGH transition
↓ = HIGH-to-LOW transition
= one HIGH level output pulse
= one LOW level output pulse
VCC
REXT
CEXT
to nCEXT
(pin 14 or 6)
to nREXT/CEXT
(pin 15 or 7)
SV00101
Figure 1. Timing Component Connection


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