ISL43L122IUZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43L122IUZ is a dual single-pole/single-throw (SPST) analog switch manufactured by Renesas Electronics Corporation. It features one normally open and one normally closed channel, enabling SPDT functionality within an 8-lead MSOP package. The device operates on a single supply voltage ranging from +1.65V to +3.6V. At a 3V supply, the typical on-resistance is 0.17Ω with a maximum of 0.25Ω at 25°C. Switching speeds are characterized by turn-on and turn-off times of 15ns typical and 25ns maximum at 3V. The component supports bidirectional signal transmission and includes digital control inputs compatible with 1.8V logic levels.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPST configuration with mixed normally open and normally closed switches for flexible routing
• Ultra-low on-resistance ensuring minimal insertion loss in signal paths
• Single-supply operation optimized for low-voltage portable applications
• High-speed switching capability suitable for high-frequency signal processing

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered handheld and portable equipment
• Cellular and mobile phone signal routing
• Portable test and measurement instruments
• Medical equipment requiring precise signal switching
• Audio and video signal path management

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix IUZ confirms the 8-lead MSOP package format and lead-free compliance status. Confirm the manufacturer designation as Renesas Electronics Corporation or Intersil Americas Inc. Ensure the part number matches the exact dual SPST NO/NC configuration required for the design. Check for any specific moisture sensitivity level requirements during storage and handling.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a single package must provide both normally open and normally closed switching functions. The 8-lead MSOP package offers a compact footprint compared to larger alternatives. Ensure the system supply voltage remains within the 1.65V to 3.6V range to maintain specified on-resistance and switching speed parameters. Verify that the 1.8V logic compatibility aligns with the controlling microcontroller or ASIC output levels.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the ISL43L12X family of ultra-low on-resistance analog switches. The family includes the ISL43L120 (two NO switches), ISL43L121 (two NC switches), and ISL43L122 (one NO, one NC). All variants share identical electrical performance characteristics regarding resistance, speed, and power consumption, differing only in the internal switch contact states.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the ISL43L120 and ISL43L121, provided the specific NO/NC combination is not critical. Other members of the ISL43L12X series may be considered if package variations such as TDFN are acceptable.