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IN74ACT299 Datasheet(PDF) 5 Page - Integral Corp.

Part No. IN74ACT299
Description  8-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER WITH PARALLEL I/O
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Maker  INTEGRAL [Integral Corp.]
Homepage  http://www.iksemi.com/
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IN74ACT299 Datasheet(HTML) 5 Page - Integral Corp.

   
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IN74ACT299
5
FUNCTION TABLE
Inputs
Response
Mode Rese
t
Mode
Select
Output
Enables
Clock Serial
Inputs
PA/
QA
PB/
QB
PC/
QC
PD/
QD
PE/
QE
PF/
QF
PG/
QG
PH/
QH
QA’QH
S2 S1 OE1 OE2
DA DH
Reset
L
X
L
L
L
X
X
X
L
L
L
L
L
L
L
L
L
L
L
L
X
L
L
X
X
X
L
L
L
L
L
L
L
L
L
L
L
H
H
X
X
X
X
X
QA through QH=Z
L
L
Shift
Right
H
L
H
H
X
D
X
Shift Right: QA through QH=Z;
DA
FA; FA
FB; etc
D
QG
H
L
H
X
H
D
X
Shift Right: QA through QH=Z;
DA
FA; FA
FB; etc
D
QG
H
L
H
L
L
D
X
Shift Right: DA
FA =QA;
FA
FB =QB; etc
D
QG
Shift
Left
H
H
L
H
X
X
D
Shift Left: QA through QH=Z;
DH
FH; FH
FG; etc
QB
D
H
H
L
X
H
X
D
Shift Left: QA through QH=Z;
DH
FH; FH
FG; etc
QB
D
H
H
L
L
L
X
D
Shift Left: DH
FH =QH;
FH
FG =QG; etc
QB
D
Parallel
Load
H
H
H
X
X
X
X
Parallel Load:PN
FN
PA PH
Hold
H
L
L
H
X
X
X
X Hold: QA through QH=Z; FN=FN PA PH
H
L
L
X
H
X
X
X Hold: QA through QH=Z; FN=FN PA PH
H
L
L
L
L
X
X
X
Hold: QN =QH
PA PH
Z = high impedance
D = data on serial input
F = flip-flop (see Logic Diagram)
When one or both output controls are high the eight input/output terminals are disabled to the
high-
impedance state; however, sequential operation or clearing of the register is not affected.


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