Six-channel isolator with a 4/2 input split
The ADUM7642CRQZ-RL7 is a six-channel digital isolator from the iCoupler series, built around magnetic coupling. Four channels drive from Side 1 to Side 2, and two run the opposite direction — a 4/2 unidirectional split that suits applications where the bulk of the isolated data flows one way and only a few status or control signals need to return. It handles 25 Mbps per channel with 50 ns propagation delay and 6 ns pulse-width distortion, so it keeps up with SPI clock rates up to the mid-range and most parallel bus handshake lines. The isolation barrier is rated at 1000 Vrms, and common-mode transient immunity is specified at a minimum of 15 kV/µs. That CMTI figure is the one that matters when the isolator sits between a noisy inverter phase leg and a controller — it means the output won't glitch when the ground plane jumps several hundred volts in a microsecond.
Package and footprint — 20-QSOP, tape and reel
The ADUM7642CRQZ-RL7 comes in a 20-lead QSOP package (the supplier device package is 20-QSOP, body 3.90 mm wide). The -RL7 suffix means it ships on 7-inch tape and reel, not tube — order the cut-tape variant if you need a small quantity for prototyping. MSL level is not in the record here, but iCoupler parts typically run MSL 3; if the reel's moisture-barrier bag has been open past the floor-life window, bake before reflow.
Lifecycle and supply posture
It is ROHS3 compliant, which clears the EU and most global regulatory gates without an exemption.