FSA2567UMX

Analog Switches - Special Purpose Overview

The FSA2567UMX is a bi-directional, low-power analog switch designed for dual SIM card multiplexing applications. It features two double-pole, double-throw (DPDT) channels within a compact UMLP-16 package measuring 1.8 x 2.6 mm. The device operates on a single supply voltage ranging from 1.65 V to 4.3 V with a maximum quiescent current of 1 µA. Key electrical parameters include a typical data path on-resistance of 6 Ω and a supply path on-resistance of 0.4 Ω. The component supports a wide -3 dB bandwidth exceeding 160 MHz and offers robust electrostatic discharge protection rated at 3 kV for signal lines and over 12 kV for power and ground connections.

Analog Switches - Special Purpose Feature Summary

• Optimized for switching WLAN-SIM data and control signals while dedicating one channel as a supply-source switch
• Low on-capacitance of 10 pF ensures high-speed data transmission integrity
• Special circuitry minimizes current consumption when SEL pin control voltage is below supply voltage
• Direct interface capability with baseband processor general-purpose I/O pins

Analog Switches - Special Purpose Applications

• Dual SIM card multiplexing in mobile phones and PDAs
• Switching shared connectors in digital cameras and notebook computers
• Signal routing in LCD monitors, televisions, and set-top boxes

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'UMX' against the manufacturer's official documentation to confirm the exact package type and tape-and-reel specifications. Ensure the component meets RoHS compliance requirements if mandated by your design standards. Cross-reference the ordering part number with the latest datasheet revision to confirm availability status and any potential lifecycle changes before finalizing procurement plans.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring low-power dual-channel switching for SIM interfaces or similar low-voltage signal paths. The low on-resistance characteristics make it suitable for maintaining signal integrity in data transmission lines. Consider the UMLP-16 footprint constraints during PCB layout to ensure adequate thermal dissipation and mechanical stability for surface-mount assembly processes.

Analog Switches - Special Purpose Part Context

This component belongs to the FSA2567 series of low-power analog switches originally developed by Fairchild Semiconductor and subsequently maintained by ON Semiconductor. The series is engineered specifically for portable electronic devices where space efficiency and power conservation are critical. The UMLP-16 variant provides a compact solution compared to larger leaded packages, facilitating integration into modern slim-profile consumer electronics designs.

Analog Switches - Special Purpose Replacement Considerations

The FSA2567MPX serves as a functional equivalent within the same product family, offering identical electrical performance but utilizing an MLP-16 package instead of the UMLP-16 configuration. Verify pinout compatibility and physical dimensions before substitution to ensure proper fit within the existing printed circuit board layout.