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MC74AC646DW Datasheet(PDF) 1 Page - Motorola, Inc |
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MC74AC646DW Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 9 page 5-1 FACT DATA Octal Transceiver/Register with 3State Outputs (Noninverting) 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. REAL TIME TRANSFER A-BUS TO B-BUS REAL TIME TRANSFER B-BUS TO A-BUS REG REG REG REG REG REG REG REG B-BUS B-BUS A-BUS A-BUS B-BUS B-BUS A-BUS A-BUS STORAGE FROM BUS TO REGISTER TRANSFER FROM REGISTER TO BUS Figure 1 Figure 2 Figure 3 Figure 4 • Independent Registers for A and B Buses • Multiplexed Real-Time and Stored Data Transfers • Choice of True and Inverting Data Paths • 3-State Outputs • 300 mil Slim Dual In-Line Package • Outputs Source/Sink 24 mA • ′ACT646 Has TTL Compatible Inputs MC74AC646 MC74ACT646 OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING) N SUFFIX CASE 724-03 PLASTIC DW SUFFIX CASE 751E-04 SOIC PACKAGE LOGIC SYMBOL A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 CAB SAB DIR CBA SBA G |
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