參數(shù)資料
型號(hào): 74HC137
廠商: NXP Semiconductors N.V.
英文描述: 3-to-8 line decoder/demultiplexer with address latches; inverting
中文描述: 3至8線路解碼器/多路解復(fù)用器的地址鎖存器;反相
文件頁(yè)數(shù): 5/19頁(yè)
文件大?。?/td> 107K
代理商: 74HC137
9397 750 13804
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 03 — 11 November 2004
5 of 19
Philips Semiconductors
74HC137
3-to-8 line decoder, demultiplexer with address latches; inverting
6.2 Pin description
7.
Functional description
7.1 Function table
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care.
Table 3:
Symbol
A0
A1
A2
LE
E1
E2
Y7
GND
Y6
Y5
Y4
Y3
Y2
Y1
Y0
V
CC
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Description
data input 0
data input 1
data input 2
latch enable input (active LOW)
data enable input 1 (active LOW)
data enable input 2 (active HIGH)
multiplexer output 7
ground (0 V)
multiplexer output 6
multiplexer output 5
multiplexer output 4
multiplexer output 3
multiplexer output 2
multiplexer output 1
multiplexer output 0
positive supply voltage
Table 4:
Enable
LE
H
X
X
L
Function table
[1]
Input
A0
X
X
X
L
H
L
H
L
H
L
H
Output
Y0
stable
H
H
L
H
H
H
H
H
H
H
E1
L
H
X
L
E2
H
X
L
H
A1
X
X
X
L
L
H
H
L
L
H
H
A2
X
X
X
L
L
L
L
H
H
H
H
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
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