M74HC164M1R(1992) 查看數據表（PDF） - STMicroelectronics
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M74HC164M1R Datasheet PDF : 12 Pages
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M54/M74HC164
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUTS
CLEAR
CLOCK
SERIAL IN
QA
A
B
L
X
X
X
L
H
X
X
H
L
X
L
H
X
L
L
H
H
H
H
X: Don’t Care
QAn - QGn : The level of QA -QG, respectively. before the most-recent transition of th clock.
OUTPUS
QB
............
L
............
NO CHANGE
QAn
............
QAn
............
QAn
............
LOGIC DIAGRAM
QH
L
QGn
QGn
QGn
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