ISL43142IB

Analog Switches, Multiplexers, Demultiplexers Overview

The Intersil ISL43142IB is a CMOS precision quad analog switch designed for low-voltage single and dual supply operation. It operates from a single +2V to +12V supply or ±2V to ±6V supplies. The device contains four separately controlled Single-Pole Single-Throw (SPST) switches, configured with two Normally Open (NO) and two Normally Closed (NC) contacts, enabling use as dual SPDT switches or dual 2:1 multiplexers. Key electrical parameters include an ON resistance (RON) of 50Ω maximum, RON matching between channels of less than 2.5Ω, charge injection of 5pC maximum, and power consumption under 1μW. Switching speeds are characterized by tON at 30ns and tOFF at 18ns. Leakage current is specified at 5nA maximum at 85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Configurable topology allowing dual SPDT or dual 2:1 multiplexer functionality through mixed NO/NC channel arrangement
• High signal fidelity maintained by low ON resistance flatness and minimal channel-to-channel mismatch
• Optimized for battery-powered equipment due to ultra-low static power consumption and leakage currents

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered portable electronic equipment requiring low power dissipation
• Signal routing in data acquisition systems utilizing dual multiplexer configurations
• Precision analog signal switching in instrumentation where low charge injection is critical

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'IB' against official Intersil/Renesas documentation to confirm package type, temperature range, and tape/reel specifications. Ensure compatibility with existing board layouts, particularly regarding the Quad No-Lead Flatpack (QFN) footprint dimensions. Cross-reference lead-free status and RoHS compliance requirements with current manufacturing data sheets before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ISL43142IB when a combination of Normally Open and Normally Closed switches is required within a single package. This model is distinct from the ISL43140 (all NC) and ISL43141 (all NO). Consider this component for applications demanding pin compatibility with legacy DG41x series devices while benefiting from improved CMOS performance metrics such as lower power and faster switching times.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43142IB belongs to the ISL43140–ISL43142 family of low-voltage, high-performance quad analog switches manufactured by Intersil Corporation. These devices are engineered to address board space limitations through compact packaging while providing precise analog signal control. The family shares common electrical characteristics but differs in internal switch configuration to support various multiplexing and switching topologies without requiring multiple components.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet indicates pin compatibility with the DG411/DG412/DG413 series. Verify functional equivalence and parameter margins against these legacy parts if substituting. Ensure that any alternative component supports the same mixed NO/NC configuration and meets the required voltage and speed specifications.