ISL43140IB

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43140IB is a CMOS precision quad analog switch manufactured by Renesas Electronics Corporation. It operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. The device features four normally closed (NC) single-pole/single-throw (SPST) switches. Key electrical parameters include an ON resistance (RON) of 50Ω maximum, channel-to-channel RON matching within 2Ω, charge injection of 5pC maximum, and power consumption under 1μW. Leakage current is specified at 5nA maximum at 85°C. Switching speeds are characterized by tON of 30ns and tOFF of 18ns. The component is housed in a 3mm x 3mm Quad No-Lead Flatpack (QFN) package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Four individually controlled SPST switches with normally closed configuration
• Low power consumption suitable for battery-operated equipment
• High signal fidelity ensured by low ON resistance flatness
• Fast switching action with minimal charge injection

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery powered equipment requiring low power consumption
• Signal routing in portable devices
• Multiplexing applications utilizing the quad SPST architecture

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the manufacturer part number ISL43140IB against official Renesas documentation to confirm specifications. Check for RoHS compliance status as older Intersil/Renesas parts may vary. Confirm package type matches the 3mm x 3mm QFN requirement for your PCB layout. Ensure supply voltage ranges align with your system design before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad normally closed analog switch is required for low-voltage applications. It serves as a pin-compatible alternative to DG411/DG412/DG413 devices. Consider its low leakage and fast switching characteristics for precision signal handling. Verify that the 50Ω RON meets your signal integrity requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43140 series belongs to a family of low-voltage, high-performance quad SPST analog switches originally developed by Intersil Corporation, now part of Renesas Electronics. This specific part number denotes the normally closed variant within the ISL43140-ISL43142 lineup. These devices are designed to alleviate board space limitations through compact packaging while maintaining precision analog switching capabilities.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet indicates pin compatibility with DG411, DG412, and DG413 devices. Verify electrical parameter equivalence before substitution. Ensure the replacement part supports the same supply voltage range and package dimensions.