FSUSB45UMX

Analog Switches - Special Purpose Overview

The FSUSB45UMX is a high-speed USB 2.0 single-pole double-throw (SPDT) switch integrated circuit manufactured by onsemi. It operates within a supply voltage range of 2.4 V to 4.4 V and supports data rates up to 480 Mbps. The device features a typical on-resistance of 0.65 Ω and includes overvoltage tolerance for all USB ports without requiring external components. It is housed in a compact UMLP package with 10 pins, measuring 1.8 x 1.4 x 0.5 mm. The component is designed for surface mount installation and functions reliably across an operating temperature range from -40 °C to +85 °C.

Analog Switches - Special Purpose Feature Summary

• Integrates a high-speed USB 2.0 SPDT switch configuration for signal routing
• Provides inherent overvoltage protection for USB ports eliminating the need for external protective components
• Maintains low power consumption suitable for battery-operated portable applications

Analog Switches - Special Purpose Applications

• Portable computing devices such as laptops and tablets
• Mobile communication handsets and smartphones
• Peripheral connectivity hubs and docking stations

Analog Switches - Special Purpose Procurement Notes

Verify current availability status as the FSUSB45UMX may be subject to obsolescence notices or end-of-life transitions. Confirm that the specific ordering suffix matches the required package variant. Ensure compliance with RoHS directives and check for any recent pinout or electrical specification updates associated with manufacturer integration changes.

Analog Switches - Special Purpose Selection Notes

Select this component when a single-channel high-speed USB switch is required within a constrained board area. The UMLP-10 package offers a small footprint compared to larger alternatives. Consider the 0.65 Ω on-resistance for signal integrity requirements and ensure the system voltage remains within the 2.4 V to 4.4 V operational window.

Analog Switches - Special Purpose Part Context

This part belongs to the FSUSB42/FSUSB45 family of USB switch ICs from onsemi. While similar to the FSUSB42 which offers dual switches, the FSUSB45 provides a single SPDT configuration. Both share comparable electrical characteristics and packaging options, allowing for design flexibility based on channel count requirements in USB host or device implementations.

Analog Switches - Special Purpose Replacement Considerations

The FSUSB42UMX serves as a functional alternative offering dual switch channels in a similar package. Verify pin compatibility and electrical specifications before substitution. Other generic USB 2.0 SPDT switches may require additional external components for overvoltage protection.