en.Wedoany.com Reported - NOVOSENSE Microelectronics has launched the SP301H/L series of three-channel digital isolators, designed specifically for RS485 communication isolation applications. Based on third-generation capacitive isolation technology, these products offer improvements in communication speed, power consumption, electromagnetic immunity, and integration compared to previous-generation solutions.
The RS485 standard remains widely used in applications such as smart meters, industrial automation systems, and renewable energy installations, offering advantages in long-distance transmission and strong noise immunity. Traditional isolated RS485 implementations typically rely on multiple optocouplers and supporting components, which consume more board space, increase design complexity, and pose long-term reliability concerns. The SP301H/L series integrates three isolation channels into a single device, aiming to simplify system design and reduce component count.
The new isolators support a maximum data rate of 8 Mbps on the communication channel and 1 Mbps on the enable control channel. The SP301H features a default high-level enable pin, while the SP301L adopts a default low-level enable configuration, allowing designers to choose the appropriate option based on system architecture. The devices come in a compact SSOW10 wide-body package, reducing PCB area by over 60% compared to traditional discrete isolation solutions. The low quiescent current design makes them suitable for battery-powered devices and energy-sensitive industrial instruments, with an operating temperature range of -40°C to +125°C.
In terms of electromagnetic environment reliability, the SP301H/L series provides a typical common-mode transient immunity of 200 kV/μs, enhancing tolerance to electrical overvoltage conditions and offering strong immunity to high-frequency power supply noise. This helps maintain communication integrity in environments affected by switching transients, grid disturbances, and long cable interference. The isolators also deliver enhanced isolation performance, supporting a withstand voltage of up to 5 kV rms (for 1 minute) and a surge voltage exceeding 10 kV.
The SP301H/L series is part of NOVOSENSE's Isolation+ product portfolio, which includes digital isolators, isolated interfaces, sensing solutions, power supplies, and gate drivers. This series is designed to provide a cost-effective migration path from traditional optocoupler-based RS485 isolation architectures and to meet the demand for smaller, faster, and more reliable industrial communication systems.
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