ISL43231IR

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43231IR is a precision, bidirectional analog switch configured as a triple single pole/double throw (SPDT) device. It operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. The ON resistance is specified at 50Ω maximum with a ±5V supply and 155Ω maximum with a +3V supply. Switching times include a turn-on time of 38ns and a turn-off time of 19ns at +5V. The device features low charge injection of 1pC maximum and guaranteed off-leakage current of 2.5nA. It utilizes a 20-lead 4x4mm QFN package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Configured as a triple SPDT switch suitable for 2-to-1 multiplexer applications
• Features inhibit and latch bar pins for simultaneous path opening and address locking
• TTL and CMOS compatible digital inputs across various supply voltages
• Guaranteed break-before-make switching action

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery powered, handheld, and portable equipment
• Communications systems including radios and telecom infrastructure
• Test equipment such as medical ultrasound and ATE
• Audio and video signal routing
• Operational amplifier gain switching networks

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm packaging options. The base part number may be available in tape and reel configurations when an additional suffix is applied. Confirm RoHS compliance status and moisture sensitivity level classification prior to procurement to ensure compatibility with assembly processes.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring precise analog signal routing with low on-resistance variations. Ensure the supply voltage meets the minimum requirements for the desired on-resistance performance. Verify that the logic thresholds align with the driving circuitry, particularly at higher supply voltages where noise margins may decrease.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the Intersil ISL43231 family of low-voltage analog switches. It is manufactured by Renesas Electronics Corporation following the acquisition of Intersil. The datasheet FN6054.2 provides detailed electrical specifications and application guidelines for this specific triple SPDT configuration.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

ISL43231IRZ

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the function of the latch bar pin?

The latch bar pin locks in the last switch address, maintaining the selected state even if the address inputs change.

How does the device handle power supply sequencing?

Proper sequencing requires V+ and V- to be applied before any input signals to prevent forward biasing internal ESD protection diodes.

Is the device compatible with TTL logic levels?

Yes, all digital inputs have 0.8V to 2.4V logic thresholds, ensuring TTL/CMOS compatibility with single +3.3V or +5V supplies.