MC74HC4538A_05 Datasheet, PDF (2/16 Pages) ON Semiconductor – Dual Precision Monostable Multivibrator (Retriggerable,Resettable)

GND 1
C_X1/R_X1 2
RESET 1 3
A1 4
B1 5
Q1 6
Q1 7
GND 8
16 V_CC
15 GND
14 C_X2/R_X2
13 RESET 2
12 A2
11 B2
10 Q2
9 Q2
Figure 1. Pin Assignment
MC74HC4538A
FUNCTION TABLE
Inputs
Reset A
B
H
H
H
L
H
X
L
H
H
X
H L,H,
H
H
L
L,H,
L
X
X
X
X
Outputs
Q
Q
Not Triggered
Not Triggered
Not Triggered
Not Triggered
L
H
Not Triggered
TRIGGER
INPUTS
A1 ⁴
B1 ⁵
C_X1
R_X1
V_CC
12
6 _Q1
7 _Q1
PIN 16 = V_CC
PIN 8 = GND
R_X AND C_X ARE EXTERNAL COMPONENTS
PIN 1 AND PIN 15 MUST BE HARD WIRED TO GND
RESET 1 ³
TRIGGER
INPUTS
A2 ¹²
B2 ¹¹
C_X2
R_X2
V_CC
15 14
10 _Q2
9 _Q2
RESET 2 ¹³
Figure 2. Logic Diagram
ORDERING INFORMATION
Device
Package
Shipping^†
MC74HC4538AN
PDIP−16
500 Units / Box
MC74HC4538ANG
PDIP−16
(Pb−Free)
500 Units / Box
MC74HC4538AD
SOIC−16
48 Units / Rail
MC74HC4538ADG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74HC4538ADR2
SOIC−16
2500 Units / Reel
MC74HC4538ADR2G
SOIC−16
(Pb−Free)
2500 Units / Reel
MC74HC4538ADTR2
TSSOP−16*
2500 Units / Reel
MC74HC4538ADTR2G
TSSOP−16*
2500 Units / Reel
MC74HC4538AF
SOEIAJ−16
50 Units / Rail
MC74HC4538AFG
SOEIAJ−16
(Pb−Free)
50 Units / Rail
MC74HC4538AFEL
SOEIAJ−16
2000 Units / Reel
MC74HC4538AFELG
SOEIAJ−16
(Pb−Free)
2000 Units / Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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