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74ALS38 データシートの表示(PDF) - Philips Electronics
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74ALS38
Quad 2-input NAND buffer (open collector)
Philips Electronics
74ALS38 Datasheet PDF : 7 Pages
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Philips Semiconductors
Quad 2-input NAND buffer (open collector)
Product specification
74ALS38A
TYPE
TYPICAL
PROPAGATION DELAY
74ALS38A
7.0ns
TYPICAL
SUPPLY CURRENT
(TOTAL)
3.5mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
V
CC
= 5V
±
10%,
T
amb
= 0
°
C to +70
°
C
14-pin plastic DIP
74ALS38AN
14-pin plastic SO
74ALS38AD
DRAWING
NUMBER
SOT27-1
SOT108-1
PIN CONFIGURATION
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
14 V
CC
13 4B
12 4A
11 4Y
10 3B
9 3A
8 3Y
SC00001
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
nA, nB
Data inputs
1.0/1.0
nY
Data outputs
20/80
NOTE:
One (1.0) ALS unit load is defined as: 20
µ
A in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
1 2 4 5 9 10 12 13
1
&
2
4
1A 1B 2A 2B 3A 3B 4A 4B
5
9
1Y 2Y 3Y 4Y
10
12
3 6 8 11
13
V
CC
= Pin 14
GND = Pin 7
SC00002
LOGIC DIAGRAM
V
CC
= Pin 14
GND = Pin 7
1
1A
2
1B
2A
4
5
2B
9
3A
3B
10
4A
12
13
4B
3
1Y
6
2Y
8
3Y
11
4Y
SC00035
FUNCTION TABLE
INPUTS
nA
nB
L
L
L
H
H
L
H
H
H = High voltage level
L = Low voltage level
X = Don’t care
LOAD VALUE
HIGH/LOW
20
µ
A/0.1mA
0.4mA/8mA
3
6
8
11
SC00034
OUTPUT
nY
H
H
H
L
1991 Feb 08
2
853–1305 01670
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