What are the key applications for this switch?

It is primarily used in cell phones, PDAs, digital cameras, and notebook computers for connector sharing and signal switching.

What makes this device suitable for portable applications?

It features very low power consumption (1µA max), over-voltage tolerance up to 5.25V, and a compact 10-MSOP package.

What are the critical electrical specifications?

It offers a 3.7pF on-capacitance, 3.9Ω on-resistance, and a -3dB bandwidth exceeding 720MHz.

What is the supply voltage range?

The recommended operating supply voltage (VCC) is between 3.0V and 4.4V.

What should sourcing teams check before buying FSUSB42MUX?

Check lifecycle (Active), compliance data, distributor availability, and approved-source coverage. Current sourcing signal: low; readiness: easy.

What is the pinout of FSUSB42MUX?

Use the FSUSB42MUX datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about FSUSB42MUX pinout to locate pins, power rails, and interface signals before layout.

FSUSB42MUX Datasheet, Specs, Alternatives & ECAD | onsemi

AI summary

The FSUSB42MUX is a high-speed, low-power DPDT switch designed for USB 2.0 and UART signal routing in portable devices.

Best for

USB 2.0 signal routing
UART/USB connector sharing
Battery-powered portable devices

Avoid if

Applications requiring >5.25V signal levels
High-power switching applications

Check before use

Control pin logic levels
PCB trace impedance matching

Key specifications

Switch Type: DPDT
Data Rate: 480 Mbps
On-Resistance: 3.9 Ohm
Bandwidth: > 720 MHz

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: REACH Unaffected
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8542.39.0001

Application

ConnectivityConsumer Electronics

Datasheet

Fairchild-Semiconductor-company-11.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for FSUSB42MUX: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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PCB Footprint

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3D Model

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Where to Buy

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a bi-directional, two-port, Hi-Speed USB 2.0 (480Mbps) UART switch configured as a DPDT device.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the FSUSB42MUX?+×

What are the key applications for this switch?+×

What makes this device suitable for portable applications?+×

What are the critical electrical specifications?+×

What is the supply voltage range?+×

What should sourcing teams check before buying FSUSB42MUX?+×

What is the pinout of FSUSB42MUX?+×