ISL43L840IR

Analog Switches, Multiplexers, Demultiplexers Overview

The Intersil ISL43L840IR is a precision, bidirectional analog switch configured as a dual 4-channel multiplexer/demultiplexer. Designed for single supply operation from +1.6V to +3.6V, it features ultra-low on-resistance of 0.5Ω at +3V and 0.62Ω at +1.8V. The device handles rail-to-rail analog signals with low off-leakage current (4nA max at +25°C). It offers fast switching action with transition times of 19ns at +3V and 24ns at +1.8V. Digital inputs are 1.8V logic-compatible when using a +3V supply. Power consumption is less than 0.2µW. It is available in 16-lead TSSOP and 16-lead 3x3 QFN packages.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-low on-resistance ensures minimal signal attenuation across the conduction path.
• Single supply operation supports low-voltage portable applications.
• Bidirectional signal flow allows flexible routing between channels.
• Rail-to-rail input/output capability maximizes dynamic range.

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered portable instrumentation
• Signal routing in mobile communication devices
• Data acquisition systems requiring low distortion

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm package type and temperature grade. Confirm RoHS compliance status through official datasheets or component markings. Check for moisture sensitivity levels and recommended reflow profiles if surface-mount assembly is planned. Ensure the source provides valid traceability for quality assurance purposes.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low voltage operation below 3.3V is required alongside high bandwidth needs. Compare on-resistance flatness and charge injection specifications against alternative switches. Verify that the 1.8V logic compatibility matches the system control interface. Consider package thermal performance and physical footprint constraints during layout.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the ISL43L84x family of low-voltage analog multiplexers. It shares functional similarities with the ISL43L841 but differs in specific electrical parameters such as on-resistance values and leakage currents. The family is designed for applications demanding high channel count in small packages with low power consumption.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ISL43L841 is a related part within the same family. Verify pinout compatibility and check if the higher on-resistance of the ISL43L841 meets the application requirements. Review datasheet differences regarding leakage current and switching speed before substitution.