ISL43112IB

Analog Switches, Multiplexers, Demultiplexers Overview

The Intersil ISL43112IB is a low-voltage, dual-supply, Single-Pole/Single-Throw (SPST) analog switch designed for high-performance signal routing. It operates from ±1.5V to ±6V supplies and is fully specified for 10% tolerance ±5V and ±3.3V rails. The device features an ON-resistance of 15Ω with flatness of 5Ω, ensuring signal fidelity across the input range. Key electrical parameters include charge injection of 7pC, off-leakage current of 5nA, and on-leakage current of 20nA at maximum temperature. Switching speeds are characterized by turn-on time of 40ns and turn-off time of 25ns. It provides minimum 2000V ESD protection per Method 3015.7 and consumes 250μW power.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Break-before-make switching operation prevents signal overlap during transitions
• CMOS logic compatible control interface simplifies integration with digital systems
• SOT-23 micro packaging reduces board space requirements for portable designs

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery powered handheld and portable equipment
• Cellular phones, pagers, laptops, and PDAs
• Medical equipment including ultrasound and MRI systems
• Audio and video signal switching applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or original manufacturer channels due to obsolete status. Confirm package integrity and pin alignment against SOT-23 specifications. Request batch traceability documentation to ensure compliance with RoHS standards. Validate part marking against official datasheet identifiers to prevent counterfeit substitution. Inspect for physical damage prior to implementation in sensitive analog circuits.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ISL43112IB when a Normally Open (NO) SPST configuration is required for low-voltage dual-supply systems. Compare against the ISL43113 variant if a Normally Closed (NC) topology is necessary instead. Evaluate supply voltage ranges to ensure compatibility with ±1.5V to ±6V operational limits. Consider leakage current specifications for high-impedance signal paths requiring minimal DC offset.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43112 belongs to the Intersil ISL4311x family of precision analog switches. This series includes the ISL43112 (Normally Open) and ISL43113 (Normally Closed). Both devices share identical electrical characteristics and packaging but differ in default switch state. The family targets next-generation portable electronics requiring low power consumption and fast switching speeds.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed substitute part numbers are not available in verified sources. The component status is listed as obsolete. Designers should consult manufacturer archives for potential legacy replacements or evaluate equivalent SPST analog switches from other vendors meeting similar electrical specifications.