ISL43L121IR

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43L121IR is a dual 2-to-1 analog multiplexer/demultiplexer designed for low-voltage single-supply operation. It operates within an input voltage range of +1.6V to +3.6V, featuring ultra-low on-resistance of 0.5Ω at +3.0V and 0.62Ω at +1.8V supplies. The device supports rail-to-rail analog signal handling with minimal off-leakage current, specified as 4nA maximum at +25°C and 30nA maximum at +85°C when powered by +3.3V. Digital inputs are compatible with 1.8V CMOS logic levels under a +3V supply condition. It is housed in a compact 16-lead TSSOP or 16-lead 3x3 QFN package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Dual 2-to-1 multiplexer configuration enabling bidirectional signal routing
• Ultra-low on-resistance optimized for precision analog switching applications
• Rail-to-rail analog signal capability across the full supply range
• Low power consumption with negligible off-state leakage current

Analog Switches, Multiplexers, Demultiplexers Applications

• Portable battery-powered instrumentation requiring low voltage operation
• Signal routing in communication systems with 1.8V logic interfaces
• Data acquisition systems utilizing rail-to-rail analog signals

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm package type and temperature grade. Confirm RoHS compliance status through official datasheets prior to integration. Ensure supply voltage constraints align with system requirements to maintain specified electrical performance parameters.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for designs requiring dual-channel switching within a narrow voltage window. Evaluate thermal dissipation needs based on load current and on-resistance values. Verify that digital control signals meet the 1.8V CMOS compatibility threshold when operating near the lower supply voltage limits.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to Intersil's family of low-voltage analog switches. It shares architectural similarities with other models like the ISL43L840 but offers a simplified dual 2-to-1 topology. The series targets applications demanding high precision and low power consumption in portable electronics.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the ISL43L840 for dual 4-to-1 configurations. Check pinout compatibility before swapping. Verify that alternative devices support the required +1.6V minimum supply voltage and 1.8V logic interface standards.