Isolation barrier and signal rate for digital bus isolation
The HCPL0601V is a single-channel optoisolator from onsemi with an open collector output, rated for 10 Mbps data rate and 3750Vrms isolation. The open collector output lets you pull the output to any supply rail up to 5.5 V, making it compatible with 3.3 V or 5 V logic without level shifting. The 10 kV/µs minimum common mode transient immunity (CMTI) means the output stays clean when fast voltage edges slam across the isolation barrier — critical in motor-drive or inverter applications where the ground plane jumps at the switching edge.
Speed and drive capability for the BOM
Propagation delay is 75 ns max in both directions (tpLH / tpHL), which at 10 Mbps leaves about 100 ns of the bit period for the output to settle — adequate for most fieldbus and isolated SPI links but marginal for 20 Mbps+ synchronous interfaces.
The base product number HCPL0601 shares the same die and pinout; the 'V' suffix denotes a specific packaging or testing variant (tube delivery in this case). The 8-SOIC footprint is standard, so board layout matches the HCPL0601 and most industry-second-source optoisolators in the same package.