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Partname: | DM74LS197 |
Description: | Presettable Binary Counters |
Manufacturer: | National Semiconductor |
Datasheet: | PDF (119K). Click here to download *) |
The 'LS197 ripple counter contains divide-by-two and divide-by-eight sections which can be combined to form a modulo-16 binary counter State changes are initiated by the falling edge of the clock The 'LS197 has a Master Reset (MR) input which overrides all other inputs and asynchronously forces all outputs LOW A Parallel Load input (PL) overrides clocked operations and asynchronously loads the data on the Parallel Data inputs (Pn) into the flipflops This preset feature makes the circuit usable as a programmable counter The circuit can also be used as a 4-bit |
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![Click here to download DM74LS197 Datasheet](../../../pndecoder/datasheets/NSC/img/009718.gif) Click here to download DM74LS197 Datasheet*) |
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