DM74ALS20A Datasheet, PDF (1/4 Pages) Fairchild Semiconductor – Dual 4-Input NAND Gate

October 1986
Revised February 2000
DM74ALS20A
Dual 4-Input NAND Gate
General Description
This device contains two independent gates, each of which
performs the logic NAND function.
Features
s Switching specifications at 50 pF
s Switching specifications guaranteed over full tempera-
ture and V_CC range
s Advanced oxide-isolated, ion-implanted Schottky TTL
process
s Functionally and pin for pin compatible with Schottky
and low power Schottky TTL counterpart
s Improved AC performance over Schottky and low power
Schottky counterparts
Ordering Code:
Order Number Package Number
Package Description
DM74ALS20AM
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74ALS20AN
N14A
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
B
C
D
X
X
X
L
X
X
L
X
X
L
X
X
L
X
X
X
H
H
H
H
H = HIGH Logic Level
L = LOW Logic Level
X = Either LOW or HIGH Logic Level
Output
Y
H
H
H
H
L
© 2000 Fairchild Semiconductor Corporation DS006184
www.fairchildsemi.com