54LS20 DM54LS20 DM74LS20 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
TL F 6355 鈥?1
Order Number 54LS20DMQB 54LS20FMQB 54LS20LMQB
DM54LS20J DM54LS20W DM74LS20M or DM74LS20N
See NS Package Number E20A J14A M14A N14A or W14B
Function Table
Y
e
ABCD
Inputs
A
X
X
X
L
H
B
X
X
L
X
H
C
X
L
X
X
H
D
L
X
X
X
H
Output
Y
H
H
H
H
L
H
e
High Logic Level
L
e
Low Logic Level
X
e
Either Low or High Logic Level
C
1995 National Semiconductor Corporation
TL F 6355
RRD-B30M105 Printed in U S A