Texas Instruments TMUXL27518 6-Channel 1:2 Multiplexer-Demultiplexer

Introduction

The Texas Instruments TMUXL27518 is a compact six-channel 1:2 multiplexer-demultiplexer for routing low-voltage analog or digital signals. Operating from a 1.08 V to 1.95 V supply, it is well suited to modern low-power electronics that need flexible signal switching with minimal power-domain concerns.

Part Description

The TMUXL27518 provides six independent bidirectional signal channels, each capable of connecting a common signal path to one of two selectable paths. This allows the device to function as either a multiplexer, selecting one of two inputs for each channel, or as a demultiplexer, routing one input to one of two outputs.

Its low operating-voltage range supports systems built around 1.2 V, 1.5 V, or 1.8 V logic and analog domains. The control inputs are compatible with 1.2 V logic levels, making the part especially useful alongside low-voltage processors, FPGAs, ASICs, and sensor interfaces.

Key characteristics include:

• Six 1:2 bidirectional switching channels
• Multiplexer and demultiplexer functionality
• 1.08 V to 1.95 V supply-voltage operation
• Support for analog and digital signal routing
• 1.2 V logic-compatible control inputs
• Powered-off protection for safer interconnection between power domains
• High-impedance output control
• Suitable for compact, power-sensitive electronic designs

Applications

Potential applications for the TMUXL27518 include:

• Low-voltage digital signal multiplexing
• Analog sensor signal selection
• I/O routing for processors and FPGAs
• Camera and imaging-module interfaces
• Portable instrumentation
• Battery-powered embedded devices
• Test and measurement signal switching
• Audio or low-voltage analog path selection
• Communication-interface routing
• Board-level signal isolation and channel selection

Industries

The TMUXL27518 can be used in a range of industries, including:

• Consumer electronics
• Wearable technology
• Medical electronics
• Industrial automation
• Telecommunications
• Automotive electronics
• Computing and data systems
• Test and measurement
• Robotics
• Internet of Things devices

Usage Ideas

1. Dual Sensor Bank Selector

Use the six channels to select between two groups of low-voltage sensors connected to a microcontroller or analog front end. A single control signal can switch the system between sensor banks while conserving processor input pins.

2. FPGA Interface Router

Route six FPGA or ASIC signals between two alternative peripheral modules. The low-voltage supply capability and 1.2 V control compatibility make the device appropriate for dense programmable-logic systems.

3. Portable Test Fixture

Build a compact test fixture that directs six measurement or communication signals to one of two devices under test. Powered-off protection can help prevent unwanted back-powering when one attached board is switched off.

Conclusion

The Texas Instruments TMUXL27518 is a versatile low-voltage signal-routing device that combines six bidirectional 1:2 switching channels with support for analog and digital signals. Its 1.08 V to 1.95 V operating range, 1.2 V logic control compatibility, high-impedance control, and powered-off protection make it a practical choice for compact, low-power systems requiring reliable multiplexing or demultiplexing.