Toshiba Electronics expands family of SO8 photocouplers for industrial, home appliance and test and measurement designs

Toshiba’s new TLP2403, TLP2405, TLP2408 and TLP2409 IC photocouplers are supplied in an 8-pin SO8 surface mount package measuring just 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. Both devices can achieve data rates of up to 5Mbps and feature a low input threshold current of 1.6mA (max). Internal Faraday shields provide a guaranteed common-mode transient immunity rating of ±15kV/µs.



The TLP2409 has a typical data transfer rate of 1Mbps and can operate across an extended temperature range of -55°C to 125°C. Common-mode transient immunity is rated at ±10kV/µs and the device features an open-collector output.



All of the new IC couplers have wide input voltage characteristics. The TLP2403 has an operating voltage range of -0.5V to 18V, while the TLP2409 will operate from -0.5V to 30V. Both the TLP2405 and TLP2408 are rated for input voltages of 4.5V to 20V.