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零件编号
产品描述 (功能)
54HC699 查看數據表(PDF) - STMicroelectronics
零件编号
产品描述 (功能)
比赛名单
54HC699
HC697/699 U/D 4 BIT BINARY COUNTER/REGISTER (3-STATE) , HC696/698 U/D DECADE COUNTER/REGISTER (3-STA
STMicroelectronics
54HC699 Datasheet PDF : 22 Pages
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M54/M74HC696/697/698/699
PIN DESCRIPTION
PIN No
1
2
3, 4, 5, 6
7, 14
8
9
11
12
13
15, 16, 17,
18
19
10
20
SYMBOL
U/D
CCK
A to D
EMP/ENT
CCLR
RCK
R/C
G
LOAD
QA to QD
RCO
GND
V
CC
NAME AND FUNCTION
Up Down Counter Selector
Counter Clock
Data Inputs
Enable P and T
Counter Clear (Active
LOW)
Register Clock
Register Counter Selector
Enable Input
Load Counter (Active
LOW)
Data Outputs
Load Counter (Active
HIGH)
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
INPUT AND OUTPUT EQUIVALENT CIRCUIT
HC696
HC697
HC698
2/22
HC699
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