ISL54208IRZ

Analog Switches - Special Purpose Overview

The Intersil ISL54208IRZ is a single-supply, dual 2:1 multiplexer designed for high-speed signal switching applications. It operates within a supply voltage range of 2.7V to 5.25V and features two SPDT switches configured as a DPDT. The device incorporates overvoltage protection (OVP) circuitry on the common pins, which isolates fault voltages up to +5.25V or down to -5V from reaching the switched outputs. This protects downstream components such as USB transceivers when input voltages exceed typical thresholds of 3.8V or drop below -0.5V. The switches exhibit an on-resistance of 6.5Ω and are optimized for minimal distortion of high-speed data signals.

Analog Switches - Special Purpose Feature Summary

• Integrated overvoltage protection circuitry that automatically opens switches upon detecting fault conditions exceeding specified voltage limits.
• High-bandwidth switch design with low capacitance to maintain signal integrity for high-speed data transmission.
• Logic inputs compatible with 1.8V logic levels when operating within the lower end of the supply voltage range.

Analog Switches - Special Purpose Applications

• Switching USB data signals in portable battery-powered products
• Protecting USB transceivers from overvoltage faults
• Signal routing in high-speed digital communication systems

Analog Switches - Special Purpose Procurement Notes

Verify the manufacturer designation, as Intersil operations were acquired by Renesas Electronics. Confirm the package type matches the required board layout and ensure the component meets RoHS standards if applicable to the target assembly process. Cross-reference datasheet revisions to confirm pinout consistency.

Analog Switches - Special Purpose Selection Notes

Select this component for applications requiring dual-channel signal multiplexing with built-in fault protection. Ensure the system supply voltage remains within the 2.7V to 5.25V range. Verify that the 6.5Ω on-resistance is acceptable for the specific signal integrity requirements of the connected data lines.

Analog Switches - Special Purpose Part Context

This part belongs to the ISL542xx series of high-speed analog switches. These devices are engineered for portable electronics where power efficiency and signal fidelity are critical. The series typically includes variants with different channel counts or protection features, sharing a common design philosophy for USB and high-speed interface management.

Analog Switches - Special Purpose Replacement Considerations

Check for direct equivalents in the ISL542xx family or modern replacements from Renesas. Verify functional compatibility regarding on-resistance, bandwidth, and OVP threshold specifications before substitution.