FSSD06UMX

Specialized ICS Overview

The FSSD06UMX is a two-port multiplexer switch IC manufactured by Fairchild Semiconductor, designed for SD, SDIO, and MMC applications. It enables host controllers to connect to multiple memory cards or peripherals. The device supports 1-bit and 4-bit configurations with a supply voltage range of 1.65 V to 3.6 V. Key electrical parameters include a maximum on-resistance of 6 Ohms, a bandwidth of 120 MHz, and propagation delays of 35 ns (on-time) and 28 ns (off-time). It operates within a temperature range of -40°C to +85°C and is housed in a 24-pin UMLP EP package.

Specialized ICS Feature Summary

• Supports SD, SDIO, and MMC specifications for multi-card peripheral expansion
• Low on-resistance of 6 Ohms maximum and 9 pF typical off-capacitance
• Single-supply operation from 1.65 V to 3.6 V
• Integrated pull-ups on clock path for high-impedance mode support

Specialized ICS Applications

• Cell phones
• Digital cameras
• Media players

Specialized ICS Procurement Notes

Verify component authenticity through authorized distributors. Check RoHS compliance status via official documentation. Confirm package integrity upon receipt. Validate part markings against the datasheet. Note that availability may vary by region.

Specialized ICS Selection Notes

Select this component for designs requiring SD/SDIO/MMC signal multiplexing. Ensure the system voltage falls within the 1.65 V to 3.6 V range. Verify that the 24-pin UMLP footprint matches the PCB layout. Consider the 6 Ohm on-resistance for signal integrity requirements.

Specialized ICS Part Context

This part belongs to the FSSD06 series of multiplexer switches. It is distinct from USB switch variants like FSUSB63. The UMX suffix indicates the specific tape-and-reel packaging configuration for surface-mount assembly.

Specialized ICS Replacement Considerations

Check for direct equivalents such as FSSD06BQX. Verify pin compatibility and electrical specifications before substitution.