74HC27NB 데이터 시트보기 (PDF) - Philips Electronics
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74HC27NB Datasheet PDF : 5 Pages
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Philips Semiconductors
Triple 3-input NOR gate
PIN DESCRIPTION
PIN NO.
1, 3, 9
2, 4, 10
13, 5, 11
7
12, 6, 8
14
SYMBOL
1A to 3A
1B to 3B
1C to 3C
GND
1Y to 3Y
VCC
NAME AND FUNCTION
data inputs
data inputs
data inputs
ground (0 V)
data outputs
positive supply voltage
Product specification
74HC/HCT27
Fig.1 Pin configuration.
Fig.4 Functional diagram.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
Fig.5 Logic diagram (one gate).
FUNCTION TABLE
INPUTS
OUTPUT
nA nB nC
nY
L
LL
H
X
XH
L
X
HX
L
H
XX
L
Notes
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
December 1990
3
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