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SN54HC191FK

  

Datasheet PDF

Part NameSN54HC191FK TI
Texas Instruments TI
Description4-BIT SYNCHRONOUS UP/DOWN BINARY COUNTERS
SN54HC191FK Datasheet PDF : SN54HC191FK pdf   SN54HC191FK pdf   

Image Info : [TI] SN54HC191

description/ordering information
The ’HC191 devices are 4-bit synchronous, reversible, up/down binary counters. Synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple-clock) counters.

● Wide Operating Voltage Range of 2 V to 6 V
● Outputs Can Drive Up To 10 LSTTL Loads
● Low Power Consumption, 80-µA Max ICC
● Typical tpd = 13 ns
● ±4-mA Output Drive at 5 V
● Low Input Current of 1 µA Max
● Single Down/Up Count-Control Line
● Look-Ahead Circuitry Enhances Speed of Cascaded Counters
● Fully Synchronous in Count Modes
● Asynchronously Presettable With Load Control

 

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