What the 10 Mbps data rate and 5000 Vrms isolation mean for your BOM
The HCPL2611M is a single-channel optoisolator from onsemi that delivers a 10 Mbps data rate with 5000 Vrms isolation — the combination that makes it a fit for industrial digital interfaces where galvanic separation is non-negotiable. With a propagation delay of 75 ns max (both tpLH and tpHL), the part keeps timing margins tight enough for 10 Mbps signaling — the 50 ns rise and 12 ns fall times mean the output edges stay clean at that rate.
Common-mode transient immunity — the spec that separates industrial optocouplers from logic-level parts
A part with lower CMTI (say 1 kV/µs) would latch or toggle on every IGBT switching edge in a 400 V drive bus — the HCPL2611M's 10 kV/µs rating means it stays quiet through those events.
The -40°C to 100°C operating temperature covers industrial enclosures, outdoor cabinets, and engine-bay environments without needing a military-grade part.