FSA2268TUMX

Analog Switches - Special Purpose Overview

The FSA2268TUMX is a dual SPDT analog switch manufactured by Fairchild Semiconductor, now part of ON Semiconductor. It operates within a supply voltage range of 1.65V to 5.5V, supporting low-voltage digital and portable applications. The device features ultra-low on-resistance of 3.5Ω at VCC=3.3V and 2.7Ω at VCC=5V, ensuring minimal signal attenuation. Input clamp current is specified at ±20mA for voltages outside the supply rails. The switch exhibits low leakage current of 1nA at 5V and high off-isolation of 60dB at 1MHz. It supports bidirectional data transfer with a bandwidth exceeding 400MHz and includes overvoltage protection up to 5.5V beyond the supply rail.

Analog Switches - Special Purpose Feature Summary

• Dual single-pole double-throw (SPDT) configuration for flexible signal routing
• Ultra-low on-resistance for high-speed data integrity
• Overvoltage protection allowing operation beyond supply rails
• Low power consumption suitable for battery-operated devices

Analog Switches - Special Purpose Applications

• Portable multimedia equipment signal switching
• Cellular phone antenna and audio path selection
• LCD panel bias voltage routing
• Data acquisition systems multiplexing

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'TUMX' corresponds to the TSSOP-10 package and tape-and-reel quantity as defined in the official datasheet. Confirm RoHS compliance status and manufacturing origin through authorized distribution channels. Ensure the component lot date code aligns with current production cycles to avoid obsolete stock issues.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring dual independent signal paths with low insertion loss. It is appropriate for applications needing operation below 3.3V where standard 5V switches fail. Consider thermal dissipation if handling high continuous currents, though typical usage remains within safe operating limits for small-signal switching.

Analog Switches - Special Purpose Part Context

This part belongs to the FSA22xx series of low-voltage analog switches designed for consumer electronics. It complements other single-channel variants like the FSA2257 for designs requiring multiple isolated switches. The series emphasizes space-saving packages and compatibility with modern low-power logic families found in mobile devices.

Analog Switches - Special Purpose Replacement Considerations

Check for direct pin-compatible alternatives such as the FSA2257 for single-channel needs or other FSA22xx family members. Verify that substitute parts maintain the same 3.5Ω max on-resistance and 5.5V absolute maximum rating to ensure circuit compatibility without redesign.