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M74HC148 数据表(PDF) 2 Page - STMicroelectronics

部件名 M74HC148
功能描述  8 TO 3 LINE PRIORITY ENCODER
PDF  11 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M74HC148 数据表(HTML) 2 Page - STMicroelectronics

  M74HC148 Datasheet HTML 1Page - STMicroelectronics M74HC148 Datasheet HTML 2Page - STMicroelectronics M74HC148 Datasheet HTML 3Page - STMicroelectronics M74HC148 Datasheet HTML 4Page - STMicroelectronics M74HC148 Datasheet HTML 5Page - STMicroelectronics M74HC148 Datasheet HTML 6Page - STMicroelectronics M74HC148 Datasheet HTML 7Page - STMicroelectronics M74HC148 Datasheet HTML 8Page - STMicroelectronics M74HC148 Datasheet HTML 9Page - STMicroelectronics Next Button
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M74HC148
2/11
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
9, 7, 6
A0 to A2
Data Outputs
10, 11, 12,
13, 1, 2, 3, 4
0 to 7
Data Inputs
15
EO
Enable Output
5
EI
Enable Input
14
GS
Priority Flag Output
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
INPUTS
OUTPUTS
E1
01234567
A2
A1
A0
GS
E0
HXXXXXXXX
H
H
H
H
H
L
HHHHHHHHHH
HH
L
L
XXXXXXX
L
L
L
L
L
H
L
XXXXXX
L
H
L
L
H
L
H
L
XXXXX
L
H
H
L
H
L
L
H
L
XXXX
L
H
H
H
L
H
H
L
H
L
X
X
X
L
HHHHH
L
L
L
H
L
X
X
L
HHHHHH
L
H
L
H
L
X
L
HHHHHHHH
L
L
H
L
L
HHHHHHHHH
H
L
H



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