74LCX257MTCX

Signal Switches, Multiplexers, Decoders Overview

The Fairchild Semiconductor 74LCX257MTCX is a low-voltage quad multiplexer belonging to the 74LCX logic family. It features four independent 2-input multiplexers with three-state outputs, housed in a 16-pin SOIC package. The device operates within a supply voltage range of 2.0V to 3.6V and supports 5V tolerant inputs and outputs for seamless interfacing between 5V and 3.3V systems. Key electrical parameters include a maximum propagation delay of 6.5ns at 2.7V and 6.0ns at 3.3V, with an operating temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Integrates four independent 2-to-1 multiplexers with three-state outputs for flexible data routing
• Features 5V tolerant inputs and outputs, enabling direct interface between 5V and 3.3V logic environments
• Designed for low-voltage operation with optimized performance across the 2.0V to 3.6V supply range

Signal Switches, Multiplexers, Decoders Applications

• Data bus switching in portable electronic devices
• Signal routing in battery-powered consumer electronics
• Interface bridging between 5V and 3.3V logic subsystems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific manufacturer designation on the component marking, as production may have transitioned from Fairchild Semiconductor to onsemi. Confirm the package variant matches the required 16-pin SOIC footprint and ensure compliance with current RoHS directives. Cross-reference the full part number suffix to guarantee compatibility with existing design specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing circuits requiring multiple independent signal paths with high-speed switching capabilities under low-voltage conditions. The 5V tolerance feature makes it suitable for legacy system integration where mixed-voltage signaling is present. Ensure the application environment remains within the specified industrial temperature range to maintain guaranteed timing performance.

Signal Switches, Multiplexers, Decoders Part Context

This device is part of the 74LCX series, which utilizes advanced CMOS technology to deliver high-speed performance while minimizing power consumption. The series is engineered for applications demanding fast switching speeds and low static power dissipation. The 74LCX257 specifically addresses the need for compact, multi-channel data selection in space-constrained designs.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for equivalents such as the 74LCX257M or other variants within the same LCX family that share identical pinouts and functional characteristics. Verify that any substitute maintains the same 5V tolerant input/output specifications and package dimensions.