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零件编号
产品描述 (功能)
M54HC192 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
比赛名单
M54HC192
HC193 - SYNCHRONOUS UP/DOWN BINARY COUNTER HC192 - SYNCHRONOUS UP/DOWN DECADE COUNTER
STMicroelectronics
M54HC192 Datasheet PDF : 15 Pages
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M54/M74HC192/193
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOL
(HC191)
PIN DESCRIPTION
PIN No
3, 2, 6, 7
4
5
11
12
13
14
15, 1, 10, 9
8
16
SYMBOL
QA to QD
CP
D
CP
U
LOAD
CARRY
BORROW
CLEAR
DA to DD
GND
V
CC
NAME AND FUNCTION
Flip-Flop Outputs
Count Down Clock Input
Count Up Clock Input
Asynchronous Parallel
Load Input (Active LOW)
Count Up (Carry)
Output (Active LOW)
Count Down (Borrow)
Output (Active LOW)
Asynchronous Reset
Input (Active HIGH)
Data Inputs
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
(HC193)
TRUTH TABLE
COUNT UP
H
H
X
X
X: Don’t Care
COUNT DOWN
H
H
X
X
LOAD
H
H
H
H
L
X
CLEAR
L
L
L
L
L
H
FUNCTION
COUNT UP
NO COUNT
COUNT DOWN
NO COUNT
PRESET
RESET
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