DM74AS27 Triple 3-Input NOR Gate
April 1984
Revised March 2000
DM74AS27
Triple 3-Input NOR Gate
General Description
This device contains three independent 3-input gates, each
of which performs the logic NOR function.
Features
s
Switching specifications at 50 pF
s
Switching specifications guaranteed over full
temperature and V
CC
range
s
Advanced oxide-isolated, ion-implanted Schottky TTL
process
s
Functionally and pin for pin compatible with Schottky,
low power Schottky, and advanced low power Schottky
TTL counterpart
s
Improved AC performance over Schottky, low power
Schottky, and advanced low power Schottky counter-
parts
Ordering Code:
Order Number
DM74AS27M
DM74AS27N
Package Number
M14A
N14A
Package Description
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 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 鈥淴鈥?to the ordering code.
Connection Diagram
Function Table
Y
=
A
+
B
+
C
Inputs
A
L
H
X
X
B
L
X
H
X
C
L
X
X
H
Output
Y
H
L
L
L
H
=
HIGH Logic Level
L
=
LOW Logic Level
X
=
Either LOW or HIGH Logic Level
漏 2000 Fairchild Semiconductor Corporation
DS006278
www.fairchildsemi.com