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74HC163N TI 4-Bit Synchronous Binary Counters (10 Pack)

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Texas Instruments
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 Product Description

These synchronous, presettable counters feature an internal carry look-ahead for application in high-speed counting designs. The ’HC163 devices are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when instructed by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output counting spikes normally associated with synchronous (ripple-clock) counters. A buffered clock (CLK) input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.


  • Wide Operating Voltage Range of 2 V to 6 V

  • Outputs Can Drive Up To 10 LSTTL Loads

  • Low Power Consumption, 80-ìA Max ICC

  • Typical tpd = 14 ns

  • ±4-mA Output Drive at 5 V

  • Low Input Current of 1 ìA Max

  • Internal Look-Ahead for Fast Counting

  • Carry Output for n-Bit Cascading

  • Synchronous Counting

  • Synchronously Programmable

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