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NTE74LS251 IC-TTL Data Multiplexer

Model:

NTE74LS251

 | Catalog #: 55051103
Price:
$1.27
$1.27
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  • Open collector outputs
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  • Absolute Maximum Ratings:
  • Supply voltage, VCC: 7V
  • Input voltage, VIN: 7V
  • Current forced into any output in the off−state: 1mA
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

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  • Absolute Maximum Ratings:
  • Supply voltage VCC: 7V
  • Input voltage VIN: 7V
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  • Absolute Maximum Ratings:
  • Supply voltage, VCC: 7V
  • Input voltage, VIN: 7V
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  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

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  • Input voltage, VIN: 7V
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  • 3−state outputs drive bus lines or buffer memory address registers
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  • Two−way asynchronous communication between data buses
  • PNP inputs reduce DC loading
  • Hysteresis (typically 400mV) at inputs improves noise margin
  • Absolute maximum ratings:
  • Supply voltage VCC: 7V
  • Input voltage VIN: 7V
  • Off−state output voltage: 5.5V
  • Operating temperature range TA: 0°C to +70°C
  • Storage temperature range Tstg: −65°C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND

See Full Product Description

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Availability:

ONLINE In stock
Usually ships in 1 - 2 business days


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Product Summary

The NTE74LS251 is a monolithic data selector/multiplexer in a 16-lead plastic DIP-type package containing full on-chip binary decoding to select one-of-eight data sources and features a strobe-controlled three-state output. The strobe must be at a low logic level to enable the device. The 3-state outputs permit a number of outputs to be connected to a common bus. When the strobe input is high, both outputs are in a high-impedance state in which both the upper and lower transistors of each totem pole output are off, and the output neither drives nor loads the bus significantly. When the strobe is low, the outputs are activated and operate as standard TTL totem pole outputs. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output control circuitry is designed so that the average output disable time is shorter than the average output enable time.

Data Sheet

  • Three−State Outputs Interface Directly with System Bus
  • Perform Parallel−to−Serial Conversion
  • Permit Multiplexing from N−Lines to One Line
  • Complementary Outputs Provide True and Inverted Data
  • Absolute Maximum Ratings:
  • Supply voltage, VCC: 7V
  • Input voltage, VIN: 7V
  • Off−state output voltage: 5.5V
  • Operating temperature range, TA: 0°C to +70°C
  • Storage temperature range, Tstg: −65°0C to +150°C
  • Unless otherwise specified, all voltages are referenced to GND
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