Part Number : 74LS20
Function : DUAL 4-INPUT POSITIVE-NAND GATE
Package : 14 Pin Type
Manufacturers : Texas Instruments
Pinouts :
Description :
These Devices contain two independent 4-input NAND gates. This device contains two independent gates each of which performs the logic NAND function.
Official Homepage : https://www.ti.com/product/SN74LS20
Function Table
A B C D Y
X X X L H
X X L X H
X L X X H
L X X X H
H H H H L
Other data sheets within the file : SN74LS20, SN74S20, SN7420, 7420, SN54LS20