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Technology family HC Function Digital Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) -40 to 85 Rating Catalog
Technology family HC Function Digital Multiplexer Configuration 2:1 Number of channels 4 Operating temperature range (°C) -40 to 85 Rating Catalog
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6 SOP (NS) 16 79.56 mm² 10.2 x 7.8 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Inverting Outputs Drive up to 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • ’HC257 ...Typical tpd = 9 ns
  • ’HC258 ...Typical tpd = 12 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Provides Bus Interface from Multiple Sources in High-Performance Systems

  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current Inverting Outputs Drive up to 15 LSTTL Loads
  • Low Power Consumption, 80-µA Max ICC
  • ’HC257 ...Typical tpd = 9 ns
  • ’HC258 ...Typical tpd = 12 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Max
  • Provides Bus Interface from Multiple Sources in High-Performance Systems

These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.

To ensure the high-impedance state during power up or power down, (G\) should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs do not load the data lines when the output-enable (G\) input is at a high logic level.

To ensure the high-impedance state during power up or power down, (G\) should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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* Data sheet SN54HC257, SN54HC258, SN74HC257, SN74HC258 datasheet (Rev. B) 15 Sep 2003

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