Toshiba Electronics Europe has added four photocouplers in an 8-pin SO8 surface mount package measuring 6.0mm x 5.1mm x 2.6mm.

All of the devices combine a GaAlAs LED with a high-speed, high-gain detector element and have a minimum isolation voltage rating of 3750Vrms.

The TLP2403 is a Darlington IC photocoupler in which the detector chip is integrated with a transistor amplifier. As a result the device is ideal for applications that require high-speed data transfer with very low input drives.

An input current of just 0.5mA delivers a current transfer ratio of at least 400% and the coupler is rated for speeds of up to 100kbps. Common-mode transient immunity is ±0.5kV/µs.

In the case of the TLP2405 (logic buffer output) and TLP2408 (inverter output) IC couplers, the integrated detector has a totem-pole output stage with current sourcing and sinking capabilities. 

The TLP2409 has a typical data transfer rate of 1Mbit/s. Common-mode transient immunity is rated at ±10kV/µs and the device features an open-collector output.

For more information, see http://www.toshiba-components.com