M74HC592 데이터 시트보기 (PDF) - STMicroelectronics
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M74HC592 Datasheet PDF : 14 Pages
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M74HC592
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1 to 7, 15
9
10
11
12
13
14
8
16
SYMBOL
A to H
RCO
CCLR
CCK
CCKEN
RCK
CLOAD
GND
VCC
NAME AND FUNCTION
Data Inputs
Ripple Carry Output
Counter Clear Input
Counter Clock Input
Counter Clock Enable
Input
Register Clock Input
Counter Load Input
Ground (0V)
Positive Supply Voltage
TRUTH TABLE
RCK
INPUTS
CLOAD CCLR CCKEN
CCK
OUTPUT
x
L
H
X
X
x
H
L
X
X
REGISTER DATA IS LOADED INTO COUNTER
COUNTER CLEAR
H
H
X
X
THE DATA OF A THRU H INPUTS IS STORED INTO REGISTER
H
H
X
X
REGISTER STATE IS NOT CHANGED
X
H
H
L
COUNTER ADVANCES THE COUNT
X
H
H
L
X
H
H
H
X
NO COUNT
NO COUNT
X: Don’t Care
RCO = QA’·QB’·QC’·QD’·QE’·QF’·QG’·QH’ (QA’ to QH’ : INTERNAL OUTPUTS OF THE COUNTER)
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