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    | Partname: | MC74AC640DW |  
    | Description: | Octal bidirectional transceiver with 3-state outputs |     
    | Manufacturer: | Motorola |  
    | Package: | P-SOIC |  
    | Pins: | 20 |  
    | Oper. temp.: | -40 to 85 |  
    | Datasheet: | PDF (174K). Click here to download *) |  
    The MC74AC640/74ACT640 octal bus transceiver is designed for asynchronous two-way communication between data buses. The device transmits data from bus A to bus B when T/R = HIGH, or from bus B to bus A when T/R = LOW. The enable input can be used to disable the device so the buses are effectively isolated. Bidirectional Data Path  |  
    
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    Click here to download MC74AC640DW Datasheet*) | 
  
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