FSUSB242UCX

Analog Switches - Special Purpose Overview

The FSUSB242UCX is a USB 2.0 switch integrated circuit manufactured by onsemi, designed for high-speed data line protection and signal routing. It features a dual single-pole double-throw (SPDT) configuration within a compact WLCSP-9 package. The device operates with a supply voltage range of 1.65 V to 3.6 V and supports data rates up to 480 Mbps, compliant with USB 2.0 specifications. Key electrical parameters include a maximum on-resistance of 7.5 Ohms and a typical off-isolation of 40 dB at 1 GHz. The component functions within an ambient temperature range of -40°C to +85°C and draws a maximum standby current of 1 µA.

Analog Switches - Special Purpose Feature Summary

• Dual SPDT architecture enabling flexible signal path selection between host and peripheral ports.
• Integrated electrostatic discharge (ESD) protection meeting IEC 61000-4-2 standards without external components.
• Low power consumption design suitable for battery-operated mobile devices and portable electronics.
• High bandwidth capability supporting full-speed and high-speed USB data transmission.

Analog Switches - Special Purpose Applications

• Mobile phone docking stations and charging hubs
• Portable media players and digital cameras
• USB flash drives and external storage peripherals

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'UCX' against the manufacturer's official datasheet to confirm the tape-and-reel packaging quantity and RoHS compliance status. Ensure the ordering part number matches the exact pinout and thermal requirements for the target PCB layout. Cross-reference the component date code with current production lifecycle notices to avoid obsolescence risks during long-term manufacturing runs.

Analog Switches - Special Purpose Selection Notes

Select this component when a dual-channel USB 2.0 switch with minimal footprint is required for space-constrained designs. Compare the 7.5 Ohm on-resistance against system impedance matching requirements to ensure signal integrity at 480 Mbps. Verify that the 1.65 V minimum operating voltage aligns with the lowest expected supply rail in the application environment.

Analog Switches - Special Purpose Part Context

This device belongs to the FSUSB242 family of USB switches from onsemi, which are engineered for portable consumer electronics. The series provides robust ESD protection and low insertion loss for USB 2.0 interfaces. The UCX variant specifically denotes the WLCSP-9 package option, distinguishing it from other package styles like UMLP or MSOP available within the broader product line.

Analog Switches - Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers for the FSUSB242UCX were not identified in the provided source material. Engineers should consult the manufacturer's official replacement guide or contact technical support directly for validated cross-reference data before implementing alternative components.