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ISL43681IR is listed in the Analog Switches, Multiplexers, Demultiplexers range at ChipApex. The manufacturer field lists Renesas Electronics Corporation. Its product description is IC MUX 8:1 60OHM 20QFN. Review the specifications below when checking this part for your BOM.
The ISL43681IR is a precision, bidirectional analog switch configured as an 8-channel multiplexer. It operates from a single +2V to +12V supply or dual ±2V to ±6V supplies. The device features an on-resistance of 39Ω at ±5V and 125Ω at +3.3V. It includes inhibit pins to open all signal paths and a latch bar pin to lock the last switch address. Digital inputs have 0.8V to 2.4V logic thresholds for TTL/CMOS compatibility. Off-leakage current is 0.1nA at +25°C and 2.5nA at +85°C. The component is housed in a 20-lead 4x4 QFN package.
Verify the specific ordering suffix against manufacturer documentation to confirm package type and RoHS compliance status. Confirm that the intended application voltage range aligns with the specified operational limits. Ensure proper ESD handling procedures are followed during installation due to CMOS sensitivity.
Select this component when high off-isolation and low charge injection are required for precision signal routing. Verify that the system supply voltage falls within the 2V to 12V single or ±2V to ±6V dual range. Consider the 20-lead QFN package dimensions for PCB layout constraints and thermal management requirements.
This part belongs to the Intersil ISL43681 and ISL43741 family of low-voltage analog switches. The ISL43681 specifically provides an 8:1 multiplexer configuration, while the companion ISL43741 offers a differential 4:1 multiplexer. Both share similar electrical characteristics and packaging options.
Public confirmed substitute part numbers are not available in the provided source material.
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