ISL43741IRZ-T

Analog Switches, Multiplexers, Demultiplexers Overview

The ISL43741IRZ-T is a precision, bidirectional analog switch configured as a differential 4-to-1 multiplexer/demultiplexer. It operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. The device features an inhibit and latch bar pin for address locking. On-resistance is 39Ω at ±5V and 125Ω at +3.3V. Off-leakage current is 0.1nA at +25°C and 2.5nA at +85°C. Digital inputs have 0.8V to 2.4V logic thresholds for TTL/CMOS compatibility. Switching times are 38ns (tON) and 19ns (tOFF) at +5V. It is housed in a 20 Ld 4x4 QFN package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Bidirectional analog switching with break-before-make timing
• Latch bar pin for holding the last switch address
• Inhibit pins to simultaneously open all signal paths
• Rail-to-rail analog signal handling capability

Analog Switches, Multiplexers, Demultiplexers Applications

• Battery powered, handheld, and portable equipment
• Telecom infrastructure and ADSL/VDSL modems
• Medical ultrasound and MRI scanners
• Audio and video signal routing
• Sample and hold circuits and operational amplifier gain switching networks

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the suffix 'T' indicates tape and reel packaging. Confirm the 'Z' suffix denotes Pb-free plus anneal RoHS compliance. Ensure the operating temperature range of -40°C to +85°C matches system requirements. Check that the 20 Ld 4x4 QFN package dimensions fit the PCB layout constraints.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring differential signal multiplexing. Verify supply voltage compatibility with the specified ranges. Consider on-resistance variations across different supply voltages. Evaluate off-isolation and crosstalk specifications for high-frequency performance needs.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ISL43741 is part of the Intersil ISL43681/ISL43741 family of low-voltage analog switches. It complements the ISL43681, which is a single-ended 8-to-1 multiplexer. Both devices share similar electrical characteristics and package options, differing primarily in channel configuration and count.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the ISL43681 for single-ended 8-channel applications. Other compatible parts within the same family may offer similar performance metrics. Verify pinout and functional equivalence before substitution.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum analog signal range?

The analog signal range extends from V- to V+, allowing rail-to-rail operation.

How does the latch bar pin function?

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

Is the device compatible with TTL logic?

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