參數(shù)資料
型號: M74HC238B1R
廠商: STMICROELECTRONICS
元件分類: 編、解碼器及復(fù)用、解復(fù)用
英文描述: HC/UH SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 3/10頁
文件大小: 297K
代理商: M74HC238B1R
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
A, B, C
Data Inputs
4, 5
G2A G2B
Enable Input (Active
LOW)
6
G1
Data Enable Input (Active
HIGH)
15, 14, 13,
12, 11, 10, 9,
7
Y0 to Y7
Outputs
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
INPUTS
OUTPUTS
SELECTED
OUTPUT
ENABLE
SELECT
G2B
G2A
G1
C
B
A
Y0Y1
Y2
Y3
Y4Y5Y6
Y7
X
L
X
L
LLL
LL
NONE
X
H
X
L
LLL
LL
NONE
H
X
L
LLL
LL
NONE
LL
H
L
H
LLL
LL
Y0
LL
H
L
H
L
H
LL
Y1
LL
H
L
H
L
H
L
LL
Y2
LL
H
L
H
L
H
LL
Y3
LL
H
L
LLL
H
L
LL
Y4
LL
H
L
H
L
LLL
L
H
LL
Y5
LL
H
LL
LLL
LL
H
L
Y6
LL
H
L
LLL
LL
L
H
Y7
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