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M74HC192 Folha de dados(PDF) 2 Page - STMicroelectronics

Nome de Peças M74HC192
Descrição Electrónicos  SYNCHRONOUS UP/DOWN DECADE COUNTER
PDF  14 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC192 Folha de dados(HTML) 2 Page - STMicroelectronics

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M74HC192
2/14
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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