參數(shù)資料
型號(hào): M74HC238TTR
廠商: 意法半導(dǎo)體
元件分類: 通用總線功能
英文描述: 3 TO 8 LINE DECODER
中文描述: 3至8線譯碼器
封裝: DIP16
文件頁(yè)數(shù): 2/10頁(yè)
文件大?。?/td> 277K
代理商: M74HC238TTR
M74HC238
2/10
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
PIN No
SYMBOL
NAME AND FUNCTION
1, 2, 3
4, 5
A, B, C
G2A G2B
Data Inputs
Enable Input (Active
LOW)
Data Enable Input (Active
HIGH)
Outputs
6
G1
15, 14, 13,
12, 11, 10, 9,
7
8
16
Y0 to Y7
GND
V
CC
Ground (0V)
Positive Supply Voltage
INPUTS
OUTPUTS
SELECTED
OUTPUT
ENABLE
SELECT
G2B
G2A
G1
C
B
A
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
X
H
L
L
L
L
L
L
L
L
X
H
X
L
L
L
L
L
L
L
L
L
X
X
H
H
H
H
H
H
H
H
X
X
X
L
L
L
L
H
H
H
H
X
X
X
L
L
H
H
L
L
H
H
X
X
X
L
H
L
H
L
H
L
H
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
H
NONE
NONE
NONE
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
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