ADUM1401WTRWZ-RL

• Four Isolated Digital Channels in One 16-Pin Package
• Supply Range of 3V to 5.5V, 11mA Nominal at 5V
• Propagation Delay of 32ns
• Automotive Grade Designation per the Product Name
• Rated from -40C to 125C
• Wide-Body SOIC, Tape and reel, RoHS Compliant

The Analog Devices ADUM1401WTRWZ-RL is a 4-channel CMOS digital isolator in a 16-pin wide-body SOIC, supplied on tape and reel and described in the product name as automotive grade. It operates from a 3V to 5.5V supply at a nominal 5V drawing 11mA, with a 32ns propagation delay, and is rated from -40C to 125C. Analog Devices lists the ADUM1401WTRWZ-RL as RoHS compliant and in Production status, with the Lead Free attribute reading Contains Lead. A digital isolator passes logic signals across a galvanic barrier so the two sides can sit at different ground potentials. One record note: the product name states 10Mbps while the Data Rate attribute reads 90Mbps, so confirm the guaranteed rate for this grade against the datasheet.

Digital isolators break ground loops and protect a low-voltage controller from a high-voltage or noisy domain, and four channels is the count that matches a complete SPI port with chip select or a UART pair plus two control lines. Typical uses are isolated SPI and UART links to gate drivers and sensors in motor drives and inverters, isolated CAN and RS-485 nodes, battery-management and traction-inverter interfaces in vehicles, medical patient-isolation barriers, and industrial I/O modules facing field wiring. CMOS isolators are chosen over optocouplers because they hold timing skew and propagation delay tight over temperature and life, where an LED's output degrades. The automotive designation and the 125C rating are what qualify the ADUM1401WTRWZ-RL for vehicle electronics. Buyers are automotive tier-one suppliers, industrial-drive and medical-equipment OEMs. Check the channel-direction split when substituting, since isolators in this family differ in how many channels run in each direction.