Fairchild (onsemi)

FSUSB42MUX

FSUSB42MUX Description

The FSUSB42MUX from Fairchild (onsemi) is a high-performance, low-power USB 2.0 switch IC designed for seamless signal routing in dual-port USB applications. It features a 2 x DPDT (Double Pole Double Throw) configuration with two independent switches, enabling efficient multiplexing of USB 2.0 signals at 480 Mbps data rates. Operating within a 2.4 V to 4.4 V supply range, this SMD/SMT-mountable IC delivers low on-resistance (7.5 Ω max) and ultra-fast switching speeds (40 ns max on-time, 35 ns max off-time), ensuring minimal signal distortion. With a bandwidth of 720 MHz and a 1 µA operating current, it is optimized for power-sensitive designs while maintaining robust performance in extended temperature ranges (-40°C to +85°C).

FSUSB42MUX Features

• Low Power Consumption: 1 µA supply current extends battery life in portable devices.
• High-Speed Switching: 40 ns on-time / 35 ns off-time ensures rapid signal routing for USB 2.0 (480 Mbps).
• Low On-Resistance: 7.5 Ω max minimizes signal attenuation and insertion loss.
• Wide Voltage Range: 2.4 V to 4.4 V compatibility suits diverse USB power profiles.
• Compact & Reliable: SMD/SMT packaging (0.004233 oz unit weight) with RoHS compliance for eco-friendly integration.
• High Bandwidth: 720 MHz supports high-fidelity signal integrity.
• Dual-Switch Design: 2 x DPDT configuration enables flexible port switching or redundancy.

FSUSB42MUX Applications

• Portable Electronics: Ideal for smartphones, tablets, and laptops requiring USB port sharing or OTG (On-The-Go) functionality.
• Peripheral Switching: Enables hot-swappable USB hubs or docking stations with minimal latency.
• Industrial & Automotive Systems: Robust performance in extended temperature ranges suits USB interfaces for diagnostics or infotainment.
• Consumer AV Equipment: Facilitates USB signal routing in TVs, gaming consoles, and audio devices.
• Medical Devices: Low-power operation benefits battery-operated USB-connected instruments.

Conclusion of FSUSB42MUX

The FSUSB42MUX stands out as a high-efficiency, low-power USB 2.0 switch with exceptional signal integrity and fast switching speeds. Its dual DPDT architecture, wide voltage range, and compact footprint make it a versatile solution for space-constrained, power-sensitive designs. Whether in consumer electronics, industrial systems, or automotive applications, this IC delivers reliable performance while adhering to RoHS standards. Engineers seeking a cost-effective, high-bandwidth USB switch will find the FSUSB42MUX an optimal choice for multiplexing and signal management in modern digital systems.