74LS20
74LS20 is Dual 4-Input NAND Gate manufactured by Fairchild Semiconductor.
DM74LS20 Dual 4-Input NAND Gate
June 1986 Revised March 2000
DM74LS20 Dual 4-Input NAND Gate
General Description
This device contains two independent gates each of which performs the logic NAND function.
Ordering Code:
Order Number DM74LS20M DM74LS20N Package Number M14A N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
Y = 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 = HIGH Logic Level L =...
