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M74HC4520 Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte M74HC4520
Spiegazioni elettronici  DUAL 4 BIT BINARY COUNTER
PDF  12 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC4520 Scheda tecnica(HTML) 2 Page - STMicroelectronics

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M74HC4520
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
Z : High Impedance
PIN No
SYMBOL
NAME AND FUNCTION
1, 9
1CLOCK,
2CLOCK
Clock Inputs (LOW to
HIGH, Edge-Triggered)
2, 10
1CE, 2CE
Clock Enable Inputs
3, 4, 5, 6
1Q0 to 1Q3
Data Outputs
7, 15
1CLEAR,
2CLEAR
Asynchronous Reset
Inputs (Active LOW)
11, 12, 13,
14
2Q0 tO 2Q3 Data Outputs
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
INPUTS
FUNCTION
CLOCK
CLOCK ENABLE
CLEAR
H
L
INCREMENT COUNTER
L
L
INCREMENT COUNTER
X
L
NO CHANGE
X
L
NO CHANGE
L
L
NO CHANGE
H
L
NO CHANGE
X
X
H
Q0 THRU Q3=L



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