© Semiconductor Components Industries, LLC, 2005

June, 2005 − Rev. 9

1

Publication Order Number:

MC74HC4538A/D

MC74HC4538A

Dual Precision Monostable

Multivibrator (Retriggerable,

Resettable)

The MC74HC4538A is identical in pinout to the MC14538B. The

device inputs are compatible with standard CMOS outputs; with

pullup resistors, they are compatible with LSTTL outputs.

This dual monostable multivibrator may be triggered by either the

positive or the negative edge of an input pulse, and produces a

precision output pulse over a wide range of pulse widths. Because the

device has conditioned trigger inputs, there are no trigger−input rise

and fall time restrictions. The output pulse width is determined by the

function which forces the Q output low and the Q output high,

regardless of the state of the output pulse circuitry.

Features

(Using the Same Test Jig)

No. 7A

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

http://onsemi.com

MARKING

DIAGRAMS

SOIC−16

D SUFFIX

CASE 751B

TSSOP−16

DT SUFFIX

CASE 948F

1

16

PDIP−16

N SUFFIX

CASE 648

1

16

1

16

1

16

MC74HC4538AN

AWLYYWWG

1

16

HC4538AG

AWLYWW

HC45

38A

ALYW

G

G

1

16

A

= Assembly Location

L, WL

= Wafer Lot

Y, YY

= Year

W, WW

= Work Week

G

= Pb−Free Package

G

= Pb−Free Package

(Note: Microdot may be in either location)

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

ORDERING INFORMATION

1

16

74HC4538A

ALYWG

SOEIAJ−16

F SUFFIX

CASE 966

1

16