Date: 11/06/2010

Optocouplers from Vishay with 1µs propagation delay

Vishay has unveiled two high-speed analog optocouplers in the industry-standard SOP-5 package, which it claims saves up to 75 % in PCB space compared to a DIP-8 SMD package. The new VOM452T and VOM453T feature a baud rate of 1 MBd in a low-profile package with a height of 2.0 mm. They also feature a very short propagation delay of 1 µs which is critical for applications requiring faster switching times than standard phototransistor optocouplers.

The VOM452T and VOM453T optocouplers is suggested for signal isolation in industrial communication bus lines, such as CANbus, CC-Link, and other serial interfaces. On one side of the bus line, they are connected to programmable logic controllers (PLCs) or automation controllers, which have an operator interface, and on the other side, they are connected to sensors on electrically noisy factory floors. The optocouplers protect operators from electrical shocks and protect the microprocessor within the PLC from being damaged by voltage spikes. The compact SOP-5 package is capable of providing 3750VRMS of voltage isolation. The VOM452T is rated for 1 kV/µs common mode noise immunity while the VOM453T is rated for 15 kV/µs.

For more information visit: http://www.vishay.com