參數(shù)資料
型號: M74HC423TTR
廠商: STMICROELECTRONICS
元件分類: 諧振器
英文描述: HC/UH SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDSO16
封裝: TSSOP-16
文件頁數(shù): 4/11頁
文件大小: 251K
代理商: M74HC423TTR
M74HC423
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
SYSTEM DIAGRAM
This logic diagram has not be used to estimate propagation delays
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 (Active
LOW)
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
OUTPUT ENABLE
X
L
H
L
H
INHIBIT
H
X
H
L
H
INHIBIT
L
H
OUTPUT ENABLE
X
L
H
INHIBIT
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