Part Number
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DM74LS197 |
Manufacturer
|
National Semiconductor |
Description
|
Presettable Binary Counters |
Published
|
Nov 17, 2005 |
Detailed Description
|
DM74LS197 Presettable Binary Counters
February 1992
DM74LS197 Presettable Binary Counters
General Description
The ’LS1...
|
Datasheet
|
DM74LS197
|
Overview
DM74LS197 Presettable Binary Counters
February 1992
DM74LS197 Presettable Binary Counters
General Description
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 latch loading data from...
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