SN74HC257NSR

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SN74HC257NSR

Quadruple 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

Packaging

Package | PIN: NS | 16
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $0.47
10-24 $0.41
25-99 $0.38
100-249 $0.32
250-499 $0.29
500-749 $0.22
750-999 $0.17
1000+ $0.15

Features

  • 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

Texas Instruments  SN74HC257NSR

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.