N74ALS20AD Ver la hoja de datos (PDF) - Philips Electronics
Número de pieza
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Fabricante
N74ALS20AD Datasheet PDF : 7 Pages
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Philips Semiconductors
Dual 4-input NAND gate
Product specification
74ALS20A
TYPE
TYPICAL
PROPAGATION DELAY
74ALS20A
4.5ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
0.65mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
14-pin plastic DIP
74ALS20AN
14-pin plastic SO
74ALS20AD
DRAWING
NUMBER
SOT27-1
SOT108-1
PIN CONFIGURATION
1A 1
1B 2
NC 3
1C 4
1D 5
1Y 6
GND 7
14 VCC
13 2D
12 2C
11 NC
10 2B
9 2A
8 2Y
SC00024
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
nA, nB, nC, nD
Data inputs
1.0/1.0
nY
Data outputs
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 4 5 9 10 12 13
1A 1B 1C 1D 2A 2B 2C 2D
1
&
2
4
5
9
1Y 2Y
10
12
68
13
VCC = Pin 14
GND = Pin 7
SC00025
LOAD VALUE
HIGH/LOW
20µA/0.1mA
0.4mA/8mA
6
8
SF00068
LOGIC DIAGRAM
VCC = Pin 14
GND = Pin 7
1
1A 2
1B
4
1C
5
1D
9
2A 10
2B
12
2C
13
2D
6
1Y
8
2Y
FUNCTION TABLE
INPUTS
nA
nB
nC
nD
H
H
H
H
L
X
X
X
X
L
X
X
X
X
L
X
X
X
X
L
SC00026
H = High voltage level
L = Low voltage level
X = Don’t care
OUTPUT
nY
L
H
H
H
H
1996 Jul 01
2
853–0859 01670
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