Description
This device contains two independent gates each of which performs the logic AND function
Features
- Y Alternate Military Aerospace device (54LS21) is available 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 CD
X X XL X X LX X L XX L X XX H H HH
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.
54LS21 Datasheet
