74HC27 Philips, 74HC27 Datasheet - Page 3

• Manufacturer Part Number: 74HC27
• Description: Triple 3-input NOR gate
• Manufacturer: Philips

Philips Semiconductors
PIN DESCRIPTION
December 1990
PIN NO.
1, 3, 9
2, 4, 10
13, 5, 11
7
12, 6, 8
14
Triple 3-input NOR gate
Fig.4 Functional diagram.
Fig.1 Pin configuration.
SYMBOL
1A to 3A
1B to 3B
1C to 3C
GND
1Y to 3Y
V
CC
Fig.5 Logic diagram (one gate).
Fig.2 Logic symbol.
NAME AND FUNCTION
data inputs
data inputs
data inputs
ground (0 V)
data outputs
positive supply voltage
3
FUNCTION TABLE
Notes
1. H = HIGH voltage level
nA
X
X
H
L
L = LOW voltage level
X = don’t care
Fig.3 IEC logic symbol.
INPUTS
nB
X
H
X
L
74HC/HCT27
Product specification
nC
H
X
X
L
OUTPUT
nY
H
L
L
L