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CD74HC195 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CD74HC195
Description  High Speed CMOS Logic 4-Bit Parallel Access Register
Download  6 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

CD74HC195 Datasheet(HTML) 2 Page - Texas Instruments

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Functional Diagram
TRUTH TABLE
OPERATING MODES
INPUTS
OUTPUT
MR
CP
PE
J
KDn
Q0
Q1
Q2
Q3
Q3
Asynchronous Reset
L
XXXXX
LLLL
H
Shift, Set First Stage
H
hhh
X
H
q0
q1
q2
q2
Shift, Reset First Stage
H
hl
l
X
L
q0
q1
q2
q2
Shift, Toggle First Stage
H
hh
l
X
q0
q0
q1
q2
q2
Shift, Retain First Stage
H
hlh
X
q0
q0
q1
q2
q2
Parallel Load
H
lX
X
dn
d0
d1
d2
d3
d2
NOTE: H = High Voltage Level
L = Low Voltage Level,
X = Don’t Care
↑ = Transition from Low to High Level
l = Low Voltage Level One Set-up Time Prior to the Low to High Clock Transition
h = Low Voltage Level One Set-up Time prior to the High to Low Clock Transition,
dn (qn) = Lower Case Letters Indicate the State of the Referenced Input (or output) One Set-up Time Prior to the Low to High Clock
Transition.
11
Q3
1
2
10
3
J
CP
K
MR
15
14
13
12
94567
Q0 Q1 Q2 Q3
D0 D1 D2 D3
PE
CD74HC195


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