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M74HC123TTR Scheda tecnica(PDF) 2 Page - STMicroelectronics

Il numero della parte M74HC123TTR
Spiegazioni elettronici  DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATOR
PDF  12 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M74HC123TTR Scheda tecnica(HTML) 2 Page - STMicroelectronics

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M74HC123
2/12
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
PIN No
SYMBOL
NAME AND FUNCTION
1,9
1A, 2A
Trigger Inputs (Negative
Edge Triggered)
2, 10
1B, 2B
Trigger Inputs (Positive
Edge Triggered)
3, 11
1 CLR
2 CLR
Direct Reset LOW and
trigger Action at Positive
Edge
4, 12
1Q, 2Q
Outputs (Active Low)
7
2RX/CX
External Resistor
Capacitor Connection
13, 5
1Q, 2Q
Outputs (Active High)
14, 6
1CX
2CX
External Capacitor
Connection
15
1RX/CX
External Resistor
Capacitor Connection
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
INPUTS
OUTPUTS
NOTE
A
BCLR
QQ
H
H
OUTPUT ENABLE
X
L
H
L
H
INHIBIT
H
X
H
L
H
INHIBIT
L
H
OUTPUT ENABLE
L
H
OUTPUT ENABLE
X
X
L
L
H
INHIBIT



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