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74ACT163 数据表(PDF) 2 Page - STMicroelectronics

部件名 74ACT163
功能描述  SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
PDF  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74ACT163 数据表(HTML) 2 Page - STMicroelectronics

  74ACT163 Datasheet HTML 1Page - STMicroelectronics 74ACT163 Datasheet HTML 2Page - STMicroelectronics 74ACT163 Datasheet HTML 3Page - STMicroelectronics 74ACT163 Datasheet HTML 4Page - STMicroelectronics 74ACT163 Datasheet HTML 5Page - STMicroelectronics 74ACT163 Datasheet HTML 6Page - STMicroelectronics 74ACT163 Datasheet HTML 7Page - STMicroelectronics 74ACT163 Datasheet HTML 8Page - STMicroelectronics 74ACT163 Datasheet HTML 9Page - STMicroelectronics Next Button
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INPUT AND OUTPUT EQUIVALENT CIRCUIT
LOGIC DIAGRAMS
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCT ION
1
CLEAR
Master Reset
2
CLOCK
Clock Input (LOW-to-HIGH,
Edge- Triggered)
3, 4, 5, 6
A, B, C, D
Data Inputs
7
ENABLE P Count Enable Input
10
ENABLE T
Count Enable Carry Input
9
LOAD
Parallel Enable Input
14, 13, 12,
11
QA to QD
Flip-Flop Outpus
10
ENABLE T
Count Enable Carry Input
8
GND
Ground (0V)
16
VCC
Positive Supply Voltage
TRUTH TABLE
INPUTS
OUTPUT S
FUNCT ION
CLR
LD
PE
T E
CK
QAQBQCQD
L
X
X
X
LLLL
RESET TO ”0”
H
L
X
X
A
B
C
D
PRESET DATA
H
H
X
L
NO CHANGE
NO COUNT
H
H
L
X
NO CHANGE
NO COUNT
H
H
H
H
COUNT UP
COUNT
X
X
X
X
NO CHANGE
NO COUNT
NOTE:
X:Don’t Care
A,B, C,D: Logic level of data input
CARRY=TE
• QA• QB• QC • QD
74ACT163
2/11



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