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CD74HC166 Datasheet(PDF) 2 Page - Texas Instruments

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Part No. CD74HC166
Description  High-Speed CMOS Logic 8-Bit Parallel-In/Serial-Out Shift Register
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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CD74HC166 Datasheet(HTML) 2 Page - Texas Instruments

 
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2
Functional Diagram
TRUTH TABLE
INPUTS
INTERNAL
Q STATES
OUTPUT
Q7
MASTER
RESET
PARALLEL
ENABLE
CLOCK
ENABLE
CLOCK
SERIAL
PARALLEL
D0 D7
Q0
Q1
LX
X
X
X
X
L
L
L
H
X
L
L
X
X
Q00
Q10
Q0
HL
L
X
a...h
a
b
h
HH
L
H
X
H
Q0n
Q6n
HH
L
L
X
L
Q0n
Q6n
HXH
X
X
Q00
Q10
Q70
H= High Voltage Level
L= Low Voltage Level
X= Don’t Care
↑= Transition from Low to High Level
a...h = The level of steady-state input at inputs D0 thru D7, respectively.
Q00, Q10, Q70 = The level of Q0, Q1, or Q7, respectively, before the indicated steady-state input conditions were established.
Q0n, Q6n = The level of Q0 or Q6, respectively, before the most recent
↑ transition of the clock.
8 - REGISTERS
PARALLEL ENABLE CIRCUIT
D0 D1 D2 D3 D4 D5 D6 D7
PE
DS
CP
CE
MR
D0
D7
Q7
CD54HC166, CD74HC166, CD54HCT166, CD74HCT166


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