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    | Partname: | DM74LS169AM |  
    | Description: |  Synchronous 4-Bit Up/Down Binary Counter |     
    | Manufacturer: | Fairchild Semiconductor |  
    | Package: | SOIC |  
    | Pins: | 16 |  
    | Datasheet: | PDF (72.5K). Click here to download *) |  
    The carry look-ahead circuitry permits cascading counters for n-bit synchronous applications without additional gating. Both count-enable inputs (P and T) must be LOW to count. The direction of the count is determined by the level of the UP/DOWN input. When the input is HIGH, the counter counts UP; when LOW, it counts DOWN. Input T is fed forward to enable the carry outputs. The carry output thus  |  
    
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    Click here to download DM74LS169AM Datasheet*) | 
  
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