The VO2611-X017T is a single-channel optocoupler from Vishay with an open-drain output, rated for 10 MBd data rate and 5300 Vrms isolation. It is designed for high-speed digital isolation in industrial environments — think motor-drive feedback, PLC I/O modules, and isolated communication links where a clean logic-level signal must cross a safety barrier. The open-drain output gives it flexibility to interface with 5 V or 3.3 V logic families through a pull-up resistor, and the 23 ns rise / 7 ns fall times keep signal integrity tight at 10 MBd.
Isolation and transient immunity — the real-world specs
The 5300 Vrms isolation rating is the headline number for safety compliance in equipment with reinforced insulation requirements, such as motor drives and industrial power supplies. But for a design engineer, the 15 kV/µs minimum common-mode transient immunity (CMTI) is often the tighter spec: it determines whether the optocoupler stays silent when a high-voltage IGBT switches a few hundred volts in nanoseconds. If your system sees fast common-mode edges from a motor-drive inverter or a flyback converter, this part holds the line without glitching the output.
Input-side LED forward voltage is 1.4 V typical, and the maximum DC forward current is 20 mA, which is standard for a photodiode-coupled optocoupler. Propagation delay is symmetrical at 100 ns max for both low-to-high and high-to-low transitions, which simplifies timing closure in synchronous designs.