ISL54402IRZ

Analog Switches - Special Purpose Overview

The ISL54402IRZ is a dual SPDT analog switch designed for low voltage USB and audio signal routing. It operates on a single supply from 1.8V to 5.5V, featuring independent logic control via IN1 and IN2 pins. The device includes two normally closed audio switches (L, R) with an on-resistance of approximately 1Ω and two normally open USB data switches (D+, D-) with an on-resistance of approximately 7.5Ω at 3.0V. It supports negative signal swings down to -1.5V for audio applications. Key electrical parameters include a maximum RON flatness of 1.9Ω, crosstalk below -110dB, and total harmonic distortion under 0.007%. The component is housed in a 10-lead 3mm x 3mm Thin DFN package.

Analog Switches - Special Purpose Feature Summary

• Dual SPDT configuration providing independent control over separate audio and USB signal paths
• Negative signal capability allowing audio signals to swing below ground potential
• Low on-resistance design ensuring minimal insertion loss for both audio and high-speed data lines
• High bandwidth and low capacitance characteristics optimized for full-speed USB 2.0 compliance

Analog Switches - Special Purpose Applications

• Personal media players requiring shared headphone and USB connectors
• Cellular and mobile phones integrating audio and data switching
• PDAs and portable devices utilizing common audio/data jacks
• USB switching circuits within battery-powered electronics

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix 'IRZ' corresponds to the 10-lead TDFN package variant. Confirm that the procurement source provides RoHS compliant units as specified in the datasheet. Ensure the supplier documentation matches the Intersil/Renesas part identification to avoid confusion with other family members like the ISL54400 or ISL54401 which have different internal circuitry.

Analog Switches - Special Purpose Selection Notes

Select the ISL54402 when independent control of audio and USB switches is required, unlike the ISL54400/01 which are VBUS-dependent. Choose this model if the application requires a wider supply voltage range up to 5.5V compared to the 3.6V limit of the ISL54400/01. Verify that the 1.8V logic compatibility meets the system's digital interface requirements.

Analog Switches - Special Purpose Part Context

The ISL54402 is part of the ISL5440x family of low voltage dual SPDT switches manufactured by Renesas Electronics Corporation (formerly Intersil). This family shares the same physical footprint and basic switching architecture but differs in control logic and power management features. The IRZ suffix denotes the standard tape and reel packaging option for the 10-lead Thin DFN form factor.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet explicitly states 'NO RECOMMENDED REPLACEMENT'. Designers must verify pinout compatibility and electrical specifications carefully if considering alternative components from other manufacturers.