STMUX1800LQTR

Analog Switches - Special Purpose Overview

The STMUX1800LQTR is a 16-to-8-bit multiplexer/demultiplexer designed for gigabit Ethernet LAN switching applications. It features low on-resistance of 4.0 Ω typical and operates within a VCC range of 3.0 to 3.6 V. The device provides enhanced ESD protection exceeding 8 kV contact and 15 kV HBM, with a channel on capacitance of 9.5 pF typical. Switching speed reaches 9 ns with near-zero propagation delay of 250 ps. It exhibits very low crosstalk of -45 dB at 250 MHz and bit-to-bit skew of 200 ps. The bandwidth exceeds 600 MHz typical, and it includes three SPDT switches for LED support in a QFN56 package.

Analog Switches - Special Purpose Feature Summary

• Bidirectional 16-to-8-bit MUX/DEMUX architecture optimized for Gigabit Ethernet standards
• Integrated three SPDT switches dedicated to LED control functionality
• Rail-to-rail switching capability on data I/O ports supporting 0 V to 5 V levels
• Enhanced electrostatic discharge protection rated above 8 kV contact and 15 kV HBM

Analog Switches - Special Purpose Applications

• 10/100/1000 Mbit Ethernet switching systems
• Audio/video signal routing and switching
• Gigabit Ethernet transceiver signal multiplexing

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix 'QTR' corresponds to tape and reel packaging requirements before procurement. Confirm that the component status remains active or identify suitable alternatives if the part has reached end-of-life stages. Ensure supply chain sources provide authentic STMicroelectronics products to maintain specified electrical performance and reliability standards.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring low insertion loss and minimal signal distortion for high-speed data lines. The rail-to-rail input/output voltage range accommodates various logic levels without external level shifting. Consider the QFN56 package dimensions and thermal characteristics during PCB layout planning to ensure adequate heat dissipation and mechanical stability.

Analog Switches - Special Purpose Part Context

This device belongs to the STMUX1800 series of analog switches manufactured by STMicroelectronics. It is specifically engineered for network infrastructure equipment where signal integrity is critical. The QFN56 package offers a compact footprint suitable for space-constrained designs while providing robust grounding through exposed pad connections.

Analog Switches - Special Purpose Replacement Considerations

Direct substitute part numbers are not explicitly documented in the provided source material. Evaluate alternative multiplexers based on matching pin configurations, electrical specifications, and package dimensions to ensure compatibility with existing board layouts and circuit requirements.