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74ALS27 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. 74ALS27
Description  Triple 3-Input NOR gate
Download  7 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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74ALS27 Datasheet(HTML) 2 Page - NXP Semiconductors

   
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Philips Semiconductors
Product specification
74ALS27
Triple 3-input NOR gate
2
1991 Feb 08
853–1162 01670
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74ALS27
4.0ns
1.5mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
DRAWING
NUMBER
14-pin plastic DIP
74ALS27N
SOT27-1
14-pin plastic SO
74ALS27D
SOT108-1
PIN CONFIGURATION
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1A
1B
2A
2B
2C
2Y
GND
3Y
3A
3B
3C
1Y
1C
VCC
SC00014
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
nA, nB, nC
Data inputs
1.0/1.0
20
µA/0.1mA
nY
Data output
20/80
0.4mA/8mA
NOTE:
One (1.0) ALS unit load is defined as: 20
µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
VCC = Pin 14
GND = Pin 7
12
13
3
4
59
10
1A 1B 1C 2A 2B 2C 3A 3B
1Y 2Y 3Y
12
6
8
SC00016
11
3C
IEC/IEEE SYMBOL
SF00036
w1
12
6
8
1
2
13
3
4
5
9
10
11
LOGIC DIAGRAM
VCC = Pin 14
GND = Pin 7
1A
1B
1Y
12
1
2
SC00028
1C
13
2A
2B
2Y
6
3
4
2C
5
3A
3B
3Y
8
9
10
3C
11
FUNCTION TABLE
INPUTS
OUTPUT
nA
nB
nC
nY
H
X
X
L
X
H
X
L
X
X
H
L
L
L
L
H
H = High voltage level
L
= Low voltage level
X = Don’t care


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