3500Vrms isolation in a 2-channel unidirectional isolator
The Maxim MAX22517AWA+ is a 2-channel unidirectional digital isolator built with capacitive coupling technology, rated for 3500Vrms isolation voltage. This part is designed for signal isolation in industrial, automotive, and telecom applications where a galvanic barrier is needed between two ground domains, such as in motor drives, PLC interfaces, and isolated sensor links.
50kV/µs CMTI — what it means for noisy environments
A common-mode transient immunity of 50kV/µs (minimum) means this isolator can reject fast voltage transients between its two sides without corrupting the output. That matters in motor-drive or inverter applications where switching IGBTs slam the ground reference with dV/dt in the tens of kV/µs. If the CMTI is too low, the isolator's output glitches, and the downstream logic sees a false pulse. At 50kV/µs, the MAX22517AWA+ handles most industrial backplane noise without extra filtering.
Package and supply — SOIC-8, single supply
Housed in an 8-SOIC package (5.30mm width), this is a surface-mount device that reflows with standard lead-free profiles. The single supply rail (3V to 5.5V) powers both sides, so no separate isolated power supply is needed for the secondary side — though the part does not include an integrated DC-DC converter (isolated power is listed as 'No'). The 2/0 input-side/output-side channel count means both channels run the same direction; this is not a bidirectional isolator.