74ALS27 Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
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Fabricante
74ALS27 Datasheet PDF : 7 Pages
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Philips Semiconductors
Triple 3-input NOR gate
Product specification
74ALS27
TYPE
TYPICAL
PROPAGATION DELAY
74ALS27
4.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
1.5mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
14-pin plastic DIP
74ALS27N
14-pin plastic SO
74ALS27D
DRAWING
NUMBER
SOT27-1
SOT108-1
PIN CONFIGURATION
1A 1
1B 2
2A 3
2B 4
2C 5
2Y 6
GND 7
14 VCC
13 1C
12 1Y
11 3C
10 3B
9 3A
8 3Y
SC00014
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
nA, nB, nC
Data inputs
1.0/1.0
nY
Data output
20/80
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
1 2 13 3 4 5 9 10 11
1A 1B 1C 2A 2B 2C 3A 3B 3C
1Y 2Y 3Y
VCC = Pin 14
GND = Pin 7
12 6 8
SC00016
1
w1
2
13
3
4
5
9
10
11
LOGIC DIAGRAM
VCC = Pin 14
GND = Pin 7
1
1A 2
1B
13
1C
3
2A 4
2B
5
2C
9
3A 10
3B
11
3C
12
1Y
6
2Y
8
3Y
FUNCTION TABLE
INPUTS
nA
nB
nC
H
X
X
X
H
X
X
X
H
L
L
L
SC00028
H = High voltage level
L = Low voltage level
X = Don’t care
LOAD VALUE
HIGH/LOW
20µA/0.1mA
0.4mA/8mA
12
6
8
SF00036
OUTPUT
nY
L
L
L
H
1991 Feb 08
2
853–1162 01670
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