74LVC138A Просмотр технического описания (PDF) - Philips Electronics
Номер в каталоге
Компоненты Описание
производитель
74LVC138A Datasheet PDF : 10 Pages
| |||
Philips Semiconductors
3-to-8 line decoder/demultiplexer; inverting
Product specification
74LVC138A
PIN DESCRIPTION
PIN NUMBER SYMBOL
1, 2, 3
4, 5
6
15, 14, 13, 12,
11, 10, 9, 7
A0 to A2
E1, E2
E3
Y0 to Y7
8
GND
16
VCC
NAME AND FUNCTION
Address inputs
Enable inputs (active LOW)
Enable inputs (active HIGH)
Outputs
Ground (0 V)
Positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
DX
0
10
1
2
2
32
3
4
4
&5
5
6
6
7
(a)
15
14 1
13 2
12 3
11
10 4
95
76
X/Y
0
15
1
1
14
2
2
13
4
3
12
4
11
&5
10
EN 6
9
7
7
(b)
SV00555
FUNCTION TABLE
INPUTS
E1
E2
E3
A0
A1
A2
Y0
H
X
X
X
X
X
H
X
H
X
X
X
X
H
X
X
L
X
X
X
H
L
L
H
L
L
L
L
L
L
H
H
L
L
H
L
L
H
L
H
L
H
L
L
H
H
H
L
H
L
L
H
L
L
H
H
L
L
H
H
L
H
H
L
L
H
L
H
H
H
L
L
H
H
H
H
H
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = don’t care
FUNCTIONAL DIAGRAM
1
A1
2
A2
3
A3
3-to-8
DECODER
ENABLE
EXITING
4
E1
5
E2
6
E3
OUTPUTS
Y1
Y2
Y3
Y4
Y5
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
Y0
15
Y1
14
Y2
13
Y3
12
Y4
11
Y5
10
Y6
9
Y7
7
SV00556
Y6
Y7
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
L
1998 Apr 28
3
Share Link: 