DM74LS21 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – Dual 4-Input AND Gates

June 1989
54LS21 DM54LS21 DM74LS21 Dual 4-Input AND Gates
General Description
This device contains two independent gates each of which
performs the logic AND function
Features
Y _{Alternate Military Aerospace device (54LS21) is avail-}
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
Function Table
Order Number 54LS21DMQB 54LS21FMQB 54LS21LMQB
DM54LS21J DM54LS21W DM74LS21M or DM74LS21N
See NS Package Number E20A J14A M14A N14A or W14B
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
L
L
L
L
H
TL F 6356 – 1
C1995 National Semiconductor Corporation TL F 6356
RRD-B30M105 Printed in U S A