74ACT257MTR

Signal Switches, Multiplexers, Decoders Overview

The 74ACT257MTR is a quad 2-channel multiplexer with 3-state outputs manufactured by STMicroelectronics. It operates within a supply voltage range of 4.5V to 5.5V and features a typical propagation delay of 5ns at 5V. The device provides symmetrical output impedance with minimum drive currents of 24mA for both high and low states. It includes protection circuits against static discharge, offering 2kV ESD immunity. The component is designed for direct interfacing with TTL, NMOS, and CMOS systems.

Signal Switches, Multiplexers, Decoders Feature Summary

• Advanced high-speed CMOS technology utilizing sub-micron silicon gate and double-layer metal wiring
• Non-inverting logic structure with common select and active-low enable inputs
• High noise immunity and compatibility with standard TTL output voltage levels
• Capable of driving 50-ohm transmission lines with balanced propagation delays

Signal Switches, Multiplexers, Decoders Applications

• Data routing in high-speed digital communication systems
• Signal selection interfaces between different logic families
• Bus-oriented switching applications requiring 3-state control

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package type required for your design, as the MTR suffix indicates tape and reel packaging. Confirm that the operating temperature range meets your environmental specifications. Ensure that the power supply voltage remains strictly within the recommended limits to maintain performance. Check for any updated documentation regarding latch-up immunity or ESD ratings before finalizing the procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a quad multiplexer with 3-state outputs is needed for high-speed data routing. It is suitable for designs requiring direct interface with TTL or CMOS logic families without additional level shifting. Consider the 5ns propagation delay and 24mA drive capability for signal integrity requirements. Verify that the SO-16 or TSSOP-16 package options fit your board layout constraints.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74ACT series of advanced CMOS logic devices. It is functionally compatible with the older 74LS257 but offers significantly faster switching speeds and lower power consumption. The device is part of a broader family of multiplexers and demultiplexers designed for general-purpose digital logic applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74ACT257B (DIP) and 74ACT257M (SOP) are pin-compatible alternatives from the same manufacturer. Other manufacturers' 74ACT257 variants may also serve as replacements if they meet the electrical specifications.