M74HC160RM13TR 查看數據表（PDF） - STMicroelectronics
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M74HC160RM13TR Datasheet PDF : 12 Pages
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M74HC160
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1
CLEAR
Asynchronous Master
Reset
2
CLOCK
Clock Input (LOW to
HIGH, Edge-triggered)
3, 4, 5, 6 A, B, C, D Data Inputs
7
PE
Count Enable Input
10
TE
Count Enable Carry Input
9
LOAD Parallel Enable Input
14, 13, 12,
11
) 15
t(s 8
c 16
QA to QD Flip Flop Outputs
CARRY
GND
Vcc
Terminal Count Output
Ground (0V)
Positive Supply Voltage
rodu TRUTH TABLE
te P INPUTS
OUTPUTS
le CLEAR LOAD PE
TE CLOCK QA
QB
QC
QD
o L
X
X
X
X
L
L
L
L
bs H
L
X
X
A
B
C
D
O H
H
X
L
NO CHANGE
) - H
H
L
X
NO CHANGE
t(s H
H
H
H
COUNT UP
c H
X
X
X
u X : Don’t Care
d A, B, C, D : Logic level of data inputs
ro Carry : CARRY = TE·QA·QB·QC·QD
NO CHANGE
Obsolete P LOGIC DIAGRAM
FUNCTION
RESET TO "0"
PRESET DATA
NO COUNT
NO COUNT
COUNT
NO COUNT
This logic diagram has not be used to estimate propagation delays
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