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Miniature Photocoupler - RadioRadar

 
Electronics News
16 years ago

Miniature Photocoupler


Toshiba Electronics Europe (TEE) has launched a miniature photocoupler that combines an isolation voltage rating of 3.75kV with switching speeds that are up to two and a half times faster than previously available devices.

 Toshiba’s TLP117 photocoupler integrates a high-speed GaAlAs infrared LED and a high-gain, high-speed photodetector within a surface mount MFSOP6 package that measures 4.4mm x 3.6mm x 2.5mm. Maximum propagation delay is 20ns, leading to typical switching speeds of 50Mbps (NRZ).

 Operating with a nominal power supply voltage of 5V, the TLP117 has a maximum current consumption of under 5mA. The photocoupler is configured in an inverter logic (totempole output) format and provides an isolation voltage rated at 3750Vrms. An internal shield ensures a minimum common mode transient immunity of 10kV/µs (min).

 The TLP117 offers guaranteed performance at temperatures ranging from -40ºC to 105ºC.


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