ISL43240IR-T

Analog Switches, Multiplexers, Demultiplexers Overview

The Renesas ISL43240IR-T is a CMOS, precision, quad single-pole/double-throw (SPDT) analog switch designed for operation from a single +2V to +12V supply or dual ±2V to ±6V supplies. It features four independently controlled SPDT switches with an on-resistance (Ron) of 18Ω maximum and Ron matching between channels of less than 1Ω. The device exhibits low charge injection of 5pC maximum and low power consumption under 5µW. Switching speeds are characterized by a turn-on time (Ton) of 52ns and a turn-off time (Toff) of 40ns. It includes guaranteed break-before-make timing and offers minimum 2000V ESD protection per method 3015.7.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Four separately controlled SPDT switches integrated into a single compact package
• Low on-resistance flatness ensuring signal fidelity across operating conditions
• Fast switching action suitable for high-speed multiplexing applications
• Compatible with TTL and CMOS logic levels for easy interface integration

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery-powered, handheld, and portable equipment
• Communications systems including radios and XDSL/PBX/PABX
• RF 'tee' switches and base station test equipment
• Medical ultrasound and electrocardiograph signal conditioning
• Audio and video switching networks and general-purpose circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'IR-T' against official Renesas documentation to confirm tape and reel packaging quantity and temperature grade specifications. Ensure the ordering part number matches the exact voltage range and package type required for the target design. Cross-reference with current datasheet revisions to confirm active status and any recent parameter updates before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when designing systems requiring low power consumption and fast switching in battery-operated devices. The quad SPDT configuration supports use as a quad 2:1 multiplexer, single 4:1 multiplexer, or dual differential multiplexer. Verify that the system supply voltage falls within the specified +2V to +12V single or ±2V to ±6V dual ranges to ensure optimal performance and leakage characteristics.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43240 belongs to the Intersil/Renesas family of low-voltage, single and dual supply, quad SPDT analog switches. This series is engineered for precision applications where low charge injection and minimal power dissipation are critical. The device complements other analog signal chain components by providing reliable signal routing in compact form factors for portable and communications electronics.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Consult official Renesas substitution guides for verified alternatives. Generic quad SPDT switches may differ in Ron matching, charge injection, or supply voltage ranges. Do not assume pin-to-pin compatibility without verifying electrical parameters against the original specification sheet.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum on-resistance matching between channels?

The on-resistance matching between channels is guaranteed to be less than 1Ω.

Does the device support break-before-make switching?

Yes, the ISL43240 guarantees break-before-make timing to prevent short circuits during switching transitions.

What is the maximum off-leakage current at elevated temperatures?

The maximum off-leakage current is 2.5nA at +85°C.