IN74ACT299DW 데이터 시트보기 (PDF) - Integral Corp.

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IN74ACT299DW

8-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER WITH PARALLEL I/O High-Speed Silicon-Gate CMOS

Integral Corp. 

IN74ACT299

FUNCTION TABLE

Inputs

Response

Mode Rese Mode Output Clock Serial PA/ PB/ PC/ PD/ PE/ PF/ PG/ PH/ QA’ QH’

t Select Enables

Inputs QA QB QC QD QE QF QG 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 XLLLLLLL L L L

L HH X X X XX

QA through QH=Z

LL

Shift H L H H X

Right

D X Shift Right: QA through QH=Z; D QG

DA FA; FA FB; etc

H LH X H

D X Shift Right: QA through QH=Z; D QG

DA FA; FA FB; etc

H LH L L

DX

Shift Right: DA FA =QA;

FA FB =QB; etc

D QG

Shift H H L H X

Left

X D Shift Left: QA through QH=Z; QB D

DH FH; FH FG; etc

H HL X H

X D Shift Left: QA through QH=Z; QB D

DH FH; FH FG; etc

H HL L L

Parallel H H H X X

Load

XD

XX

Shift Left: DH FH =QH;

FH FG =QG; etc

Parallel Load:PN FN

QB D

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 LL L L

Z = high impedance

X XX

Hold: QN =QH

PA PH

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.

5

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