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M74HC192 데이터시트(PDF) 2 Page - STMicroelectronics

부품명 M74HC192
상세설명  SYNCHRONOUS UP/DOWN DECADE COUNTER
PDF  14 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC192 데이터시트(HTML) 2 Page - STMicroelectronics

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M74HC192
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
PIN No
SYMBOL
NAME AND FUNCTION
3, 2, 6, 7
QA to QD
Flip-Flop Outputs
4
COUNT
DOWN
Count Down Clock Input
5
COUNT UP
Count Up Clock Input
11
LOAD
Asynchronous Parallel
Load Input (Active LOW)
12
CARRY
Count Up (Carry)
Output (Active LOW)
13
BORROW
Count Down (Borrow)
Output (Active LOW)
14
CLEAR
Asynchronous Reset
Input (Active High)
15, 1, 10, 9
A to D
Data Inputs
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
COUNT UP
COUNT DOWN
LOAD
CLEAR
FUNCTION
H
H
L
COUNT UP
H
H
L
NO COUNT
H
H
L
COUNT DOWN
H
H
L
NO COUNT
X
X
L
L
PRESET
X
X
X
H
RESET



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