54LS20 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Dual 4-Input NAND Gates

June 1989
54LS20 DM54LS20 DM74LS20 Dual 4-Input NAND Gates
General Description
This device contains two independent gates each of which
performs the logic NAND function
Features
Y _{Alternate Military Aerospace device (54LS20) is avail-}
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
Function Table
Order Number 54LS20DMQB 54LS20FMQB 54LS20LMQB
DM54LS20J DM54LS20W DM74LS20M or DM74LS20N
See NS Package Number E20A J14A M14A N14A or W14B
TL F 6355 – 1
Y e ABCD
Inputs
A
B
C
D
X
X
X
L
X
X
L
X
X
L
X
X
L
X
X
X
H
H
H
H
H e High Logic Level
L e Low Logic Level
X e Either Low or High Logic Level
Output
Y
H
H
H
H
L
C1995 National Semiconductor Corporation TL F 6355
RRD-B30M105 Printed in U S A