© 2000 Fairchild Semiconductor Corporation

DS006363

www.fairchildsemi.com

August 1986

Revised March 2000

DM74LS38

Quad 2-Input NAND Buffer with Open-Collector Outputs

General Description

This device contains four independent gates, each of which

performs the logic NAND function. The open-collector out-

puts require external pull-up resistors for proper logical

operation.

Pull-Up Resistor Equations

Where:

for all outputs tied to pull-up resistor

all inputs tied to pull-up resistor

all inputs tied to pull-up resistor

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Function Table

Y

= AB

H

= HIGH Logic Level

L

= LOW Logic Level

Order Number

Package Number

Package Description

DM74LS38M

M14A

14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow

DM74LS38SJ

M14D

14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

DM74LS38N

N14A

14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

Inputs

Output

AB

Y

LL

H

LH

H

HL

H

HH

L