STMicroelectronics has expanded its family of dual-channel high-speed digital isolators, increasing the flexibility for designers to optimize their board layout.
The new STISO620 contains two channels of the same directionality, having all digital inputs on one side of the isolation barrier and all digital outputs on the other side.
It joins ST's lineup of digital isolators along with the STISO621 and STISO621W, which provide one channel in each direction. The family offers a convenient solution for many applications that need to isolate two digital signals and transfer digital communication across the isolation barrier with flexible directionality.
All isolators are based on ST's 6kV thick oxide technology which ensures reliable galvanic isolation. Built to maintain insulation integrity during system failures and aging, they increase reliability in industrial and consumer applications. This includes smart grid equipment, utility meters, motor drives, smart building and lighting systems, and appliances, as well as power supplies, inverters, fieldbus isolators, and battery monitors.
The new devices can be used anywhere to replace optocouplers, ensuring superior long-term performance.
With two Schmitt trigger inputs, the STISO620 offers high noise immunity with a switching speed of up to 100Mbit/s and pulse distortion of less than 3ns. Housed in a SO8N narrow body package with 4mm leakage and clearance, the STISO620 supports 4000V peak impulse voltage (VIOTM) and has an isolation voltage of 2830Vrms (VISO) with a maximum working isolation voltage of 849Vrms (VIOWM ).
Key insulation parameters are tested to safety standards VDE0884-10 and UL 1577 and all insulators are already UL 1577 certified.
