PI3L110QEX

Analog Switches - Special Purpose Overview

The PI3L110QEX is a quad, 2:1 multiplexer/demultiplexer LAN switch designed for 3.3V operation within a +3.0V to +3.6V range. It features an on-resistance of 4Ω typical and supports switching speeds up to 9ns with near-zero propagation delay of 250ps. The device provides greater than 350MHz bandwidth and includes over 2kV ESD protection. It incorporates IOFF support for partial-power-down mode and data/control inputs with undershoot clamp diodes. Available in 16-pin QSOP or TSSOP packages, it operates from -40°C to +85°C.

Analog Switches - Special Purpose Feature Summary

• Supports bidirectional switching for Fast Ethernet transceiver differential outputs
• Enables partial-power-down mode via IOFF feature to prevent backflow current
• Includes undershoot clamp diodes on data and control inputs

Analog Switches - Special Purpose Applications

• Dual Physical Layer Device sharing to one interface connector
• Routing signals for 10/100 Mbit Ethernet
• Replacing mechanical relays in low-voltage LAN applications

Analog Switches - Special Purpose Procurement Notes

Verify the specific package variant required for the design, as the Q suffix denotes 16-pin QSOP and L denotes 16-pin TSSOP. Confirm whether tape and reel packaging (indicated by the EX suffix) is necessary for automated assembly processes. Ensure that the 3.3V supply voltage aligns with the specified operating range of +3.0V to +3.6V for proper functionality.

Analog Switches - Special Purpose Selection Notes

Select this component when a low-latency, high-bandwidth signal routing solution is needed for 10/100 Base-T Ethernet systems. The device is suitable for designs requiring isolation during power-off states and protection against undershoot voltages on control lines. Consider the thermal characteristics and physical footprint of the chosen package style relative to the PCB layout constraints.

Analog Switches - Special Purpose Part Context

This part belongs to Diodes Incorporated's line of LAN switches derived from Pericom Semiconductor technology. It functions as a high-speed analog switch intended to replace mechanical relays in network infrastructure. The device specifically targets applications involving Fast Ethernet PHY devices where signal integrity and minimal attenuation are critical requirements.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Analog Switches - Special Purpose FAQ

How does the PI3L110 handle partial-power-down scenarios?

The device supports partial-power-down mode through its IOFF feature, which ensures that damaging current will not backflow throughout the device when powered down.

What is the maximum bandwidth of the PI3L110?

The device offers a bandwidth of greater than 350 MHz at -3dB when tested with a 50-ohm load resistance.

Are there protections for input voltage overshoot?

Yes, the data and control inputs are equipped with undershoot clamp diodes to protect the device during operation.