SN74HC251N SN74HC251 74HC251 Data Selectors/Multiplexers with 3-State Outputs Breadboard-Friendly IC DIP-16



The SN74HC251 data selectors/multiplexers contain full binary decoding to select 1-of-8 data sources and feature strobe-controlled complementary 3-state outputs.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (in the high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Both outputs are controlled by the output-enable (OE)\ input. The outputs are disabled when OE\ is high.


  • SN74HC251N

This item features:

  • 3-State Version of ’HC151
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • Typical tpd = 9 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Perform Parallel-to-Serial Conversion
  • Complementary Outputs Provide True and Inverted Data


  • New and Authentic Component(s) - SN74HC251N Data Selectors/Multiplexers With 3-State Outputs ICs.

  • Friendly Note: Be mindful of the many, inexpensive, counterfeits available on the market.

General details:

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