MC74AC646
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MC74AC646 MC74ACT646
Octal Transceiver/Register with 3ĆState Outputs (NonĆinverting)
The MC74AC646/74ACT646 consist of registered bus transceiver circuits, with outputs, D-type flip-flops and control circuitry providing multiplexed transmission of data directly from the input bus or from the internal storage registers. Data on the A or B bus will be loaded into the respective registers on the LOW-to-HIGH transition of the appropriate clock pin (CAB or CBA). The four fundamental data handling functions available are illustrated in the following figures.
OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING)
REAL TIME TRANSFER A-BUS TO B-BUS A-BUS
REAL TIME TRANSFER B-BUS TO A-BUS A-BUS
N SUFFIX CASE 724-03 PLASTIC
REG B-BUS
REG B-BUS
Figure 1
Figure 2
DW SUFFIX CASE 751E-04 SOIC PACKAGE
STORAGE FROM BUS TO REGISTER A-BUS
TRANSFER FROM REGISTER TO BUS A-BUS
LOGIC SYMBOL
REG REG REG REG CAB A0 A1 A2 A3 A4 A5 A6 A7 SAB DIR CBA SBA G B0 B1 B2 B3 B4 B5 B6...
