Dual 4-Input NAND Gates
54LS20 DM54LS20 DM74LS20 Dual 4-Input NAND Gates
June 1989
54LS20 DM54LS20 DM74LS20 Dual 4-Input NAND Gates
General D...
Description
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 available 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 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
H H H H L
C1995 National Semiconductor Corporation TL F 6355
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM54LS and 54LS
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Recommended Operati...
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