ISL43143IV

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43143IV is a CMOS precision quad single-pole/single-throw (SPST) analog switch manufactured by Intersil. It operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. Key electrical parameters include an on-resistance (RON) of 50Ω maximum, channel-to-channel RON matching of less than 2.5Ω, and low charge injection of 5pC maximum. The device features fast switching speeds with tON at 30ns and tOFF at 18ns. It is housed in a 3mm x 3mm Quad No-Lead Flatpack (QFN) package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four separately controlled switches
• Low power consumption suitable for battery-operated equipment
• High signal fidelity due to low RON flatness and matching
• Compact QFN package design for board space efficiency

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered portable equipment
• Signal routing matrices
• Data acquisition systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'IV' against official Intersil documentation to confirm the exact temperature range and package variant. Ensure compatibility with existing PCB footprints for the QFN-16 form factor. Cross-reference pin assignments with the datasheet to prevent misalignment during assembly.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low leakage current and fast switching are required for single or dual supply applications. Compare against the DG411/DG412/DG413 series for pin compatibility if replacing legacy designs. Consider the 50Ω RON limit for signal integrity requirements in high-frequency analog paths.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43143 belongs to the ISL4314x family of precision analog switches. This series includes variants with normally open (ISL43141) and mixed NC/NO configurations (ISL43142). The ISL43143 specifically provides four normally closed switches, offering flexibility for different logic control schemes within the same package footprint.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The DG411, DG412, and DG413 are explicitly listed as pin-compatible alternatives. Verify that the substitute part meets the specific voltage and thermal requirements of the original design before implementation.