PI3USB20LEX

Analog Switches - Special Purpose Overview

The PI3USB20LEX is a 4-channel, 2:1 multiplexer/demultiplexer USB switch manufactured by Diodes Incorporated. It operates within a supply voltage range of +3.0V to +3.6V and features an on-resistance (RON) of 4Ω typical and 8Ω maximum. The device provides a bandwidth exceeding 500 MHz with a propagation delay of 250ps typical. Key electrical parameters include a quiescent current of 800µA maximum, crosstalk of -27dB at 250MHz, and output isolation of -32dB. It supports high-speed USB 2.0 signals up to 480 Mb/s and is housed in a 16-pin TSSOP package.

Analog Switches - Special Purpose Feature Summary

• Bidirectional switching capability for differential outputs from USB host devices
• Low bit-to-bit skew and high channel-to-channel noise isolation
• Near-zero propagation delay resulting from low channel resistance and I/O capacitance
• High ESD protection rating exceeding 2000V via Human Body Model

Analog Switches - Special Purpose Applications

• Routing signals for USB 2.0 interfaces
• Multiplexing differential outputs to corresponding destinations
• Signal routing in high-speed data transmission systems

Analog Switches - Special Purpose Procurement Notes

Verify the component against official datasheets to confirm pinout compatibility and electrical specifications before integration. Ensure that the operating environment remains within the specified temperature range of -40°C to +85°C. Confirm power-supply sequencing requirements to apply VCC before input or control signals to prevent damage. Validate signal levels against the guaranteed HIGH and LOW voltage thresholds for reliable operation.

Analog Switches - Special Purpose Selection Notes

Select this component for applications requiring low skew and high isolation in USB 2.0 signal paths. The wide bandwidth supports data frequencies beyond standard USB 2.0 speeds. Consider the single enable pin configuration for simplified control logic. Evaluate the 16-pin TSSOP package constraints against available board space. Verify that the 3.3V supply voltage aligns with the system design requirements.

Analog Switches - Special Purpose Part Context

This part belongs to the PI3USB series of USB switches designed for high-speed digital signal routing. It functions as a multiplexer/demultiplexer video switch with high-impedance outputs. The device is engineered to minimize attenuation of high-speed signals while maintaining compatibility with various standards. It represents a solution for managing multiple signal sources in compact electronic designs.

Analog Switches - Special Purpose Replacement Considerations

Check for direct substitutes within the PI3USB family that offer similar channel counts and package types. Verify that alternative components match the 3.3V operating voltage and 16-pin TSSOP footprint. Ensure replacement parts maintain comparable bandwidth and propagation delay specifications for signal integrity.

Analog Switches - Special Purpose FAQ

What is the maximum supply voltage for the PI3USB20LEX?

The device operates within a supply voltage range of +3.0V to +3.6V.

How does the PI3USB20LEX handle signal directionality?

The switch is bidirectional, allowing it to multiplex differential outputs from a USB Host device to one of two corresponding outputs without significant attenuation.

What is the typical propagation delay of the PI3USB20LEX?

The typical propagation delay is 250ps, which is attributed to its low channel resistance and I/O capacitance.