DM74LS27 Triple 3-Input NOR Gate
May 1986
Revised March 2000
DM74LS27
Triple 3-Input NOR Gate
General Description
This device contains three independent gates each of
which performs the logic NOR function.
Ordering Code:
Order Number
DM74LS27M
DM74LS27N
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 鈥淴鈥?to the ordering code.
Connection Diagram
Function Table
Y
=
A
+
B
+
C
Inputs
A
L
X
X
H
B
L
X
H
X
C
L
H
X
X
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
DS006359
www.fairchildsemi.com