December 25, 2024 
Professional magazine and portal dedicated to electronics 
STMicroelectronics has launched a family of octal high-side switches that combine galvanic isolation for robustness, RDS(on) below 260mΩ for energy efficiency, and protection and diagnostics for reliability and fault recovery.
The 8-channel switches, ISO808, ISO808A, ISO808-1, and ISO808A-1, drive all types of industrial loads – capacitive, resistive, and inductive – with one side connected to ground. Typical uses are in programmable logic controllers (PLC), industrial PCs, and computer numerical control (CNC) machines, especially where isolation is needed to increase protection for sensitive smart-factory electronics.
The ISO808 and ISO808A have a current limit of 0.7A, while the ISO808-1, ISO808A-1 have a limit of 1A. The ISO808 and ISO808-1 provide a separate input pin for each channel and allow either direct control or synchronous operation driving all outputs simultaneously. The ISO808A and ISO808A-1 have a serial SPI input and feature an open-drain power-good (Pgood) indicator to aid system management. All switches have a dedicated fault-indicator pin (more info).
