ISL43121IHZ-T

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43121IHZ-T is a dual SPST normally-closed analog switch manufactured by Renesas Electronics Corporation, formerly Intersil. It operates on a single supply voltage ranging from 2.7V to 12V. The device features a maximum on-resistance of 20 ohms with a channel-to-channel matching of 800 milliohms. Switching times are specified at 35ns for turn-on and 30ns for turn-off. Key electrical characteristics include a charge injection of 5pC, off-state leakage current of 100pA, and crosstalk of -105dB at 1MHz. Channel capacitance is 8pF for both source and drain. It is housed in an SOT-23-8 package and supports an operating temperature range of -40°C to 85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual SPST normally-closed configuration for signal routing
• Low on-resistance of 20 ohms for minimal signal loss
• High isolation with -105dB crosstalk at 1MHz
• Compatible with single supply voltages up to 12V

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal multiplexing in data acquisition systems
• Audio and video signal switching
• Instrumentation input selection
• Communication equipment signal routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'IH' corresponds to the tape and reel packaging format as indicated in distributor records. Confirm the component status is discontinued before finalizing design-in decisions. Ensure the ordering part number matches the exact manufacturer designation to avoid compatibility issues with existing inventory or replacement strategies.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally-closed state is required for the default signal path. Compare against the ISL43120 series if a normally-open configuration is preferred instead. Verify that the 20-ohm on-resistance meets the application's voltage drop requirements. Ensure the SOT-23-8 package size fits the PCB layout constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the ISL4312x family of dual SPST analog switches. It shares similar electrical specifications with the ISL43120 but differs in the contact state (normally-closed vs. normally-open). The product line was originally developed by Intersil before its acquisition by Renesas Electronics Corporation.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official Renesas resources for qualified alternatives or pin-compatible replacements.