ISL43L220IRZ-T

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43L220IRZ-T is a dual single-pole/double-throw (SPDT) analog switch manufactured by Renesas Electronics. It operates from a single +1.1V to +4.5V supply and features ultra-low on-resistance, ranging from 0.22Ω at 4.3V to 2.6Ω at 1.1V. The device provides fast switching speeds with turn-on times as low as 11ns and turn-off times of 5ns at higher voltages. Packaged in a 10-lead 3x3mm thin DFN, it supports bidirectional signal flow and includes normally open and normally closed contacts for each channel.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low on-resistance ensures minimal insertion loss and distortion across the signal range.
• Fast switching speeds enable high-frequency performance suitable for portable applications.
• Single-supply operation allows compatibility with battery-powered equipment.
• Pin-compatible design facilitates direct replacement for specific legacy components.

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered handheld and portable equipment
• Cellular and mobile phones
• Portable test and measurement instruments

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component status before procurement, as the datasheet indicates this part is not recommended for new designs. Confirm that the IRZ-T suffix corresponds to the tape and reel packaging format required for your assembly process. Ensure compliance with moisture sensitivity level requirements during storage and soldering.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when board space is limited due to its compact 10-lead thin DFN package. Consider the trade-off between on-resistance and switching speed relative to the available supply voltage. Verify that the digital input logic levels are compatible with the system's control signals, particularly at lower supply voltages where thresholds shift.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the ISL43L2xx series of low-voltage analog switches. It is functionally similar to the MAX4684 and MAX4685, offering pin-for-pin compatibility. The manufacturer recommends the ISL43L210 as a replacement part for future designs, indicating a transition in product lifecycle management.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ISL43L210 is explicitly listed as the recommended replacement part. Designers should verify electrical parameter alignment, particularly on-resistance and switching times, when transitioning from the ISL43L220 to the ISL43L210.

Analog Switches, Multiplexers, Demultiplexers FAQ

Is the ISL43L220 compatible with bipolar supplies?

No, the device cannot be operated with bipolar supplies because the input switching point becomes negative in such configurations.

What is the maximum continuous current rating for the analog pins?

The maximum continuous current for NO, NC, or COM pins is ±300mA.

How does the on-resistance vary with supply voltage?

On-resistance increases as the supply voltage decreases; it is 0.22Ω at 4.3V and rises to 2.6Ω at 1.1V.