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74F257AN Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
74F257ANSIGNETICS475Yes

74F257AN** is a quad 2-input multiplexer with 3-state outputs, manufactured by **Signetics**.

The 74F257AN is a quad 2-input multiplexer with 3-state outputs, manufactured by Signetics.

Key Specifications:

  • Logic Family: 74F (Fast TTL)
  • Function: Quad 2-input multiplexer
  • Output Type: 3-state (allows bus sharing)
  • Number of Channels: 4
  • Inputs per Channel: 2 data inputs, 1 select input
  • Operating Voltage: 5V (±10%)
  • Propagation Delay: Typically 5.5 ns (max)
  • Output Current (High/Low): ±15mA / 64mA
  • Package Type: 16-pin DIP (Dual In-line Package)
  • Operating Temperature Range: 0°C to +70°C

Features:

  • High-speed operation (compatible with Fast TTL)
  • 3-state outputs for bus-oriented applications
  • Common select input for all four multiplexers
  • Low power consumption compared to standard TTL
  • Schmitt-trigger inputs for improved noise immunity

Applications:

  • Data routing and selection
  • Bus interfacing
  • Memory address decoding
  • Signal multiplexing in digital systems

This IC is now considered obsolete but was widely used in high-speed digital logic applications.

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