Toshiba Electronics Europe has expanded its DCL34xx0B series of digital isolators with four quad-channel devices aimed at industrial automation applications, combining low power consumption with data rates of up to 25Mbps and operation at temperatures up to 125°C.
The new devices are designed for applications including programmable logic controllers (PLCs), I/O interfaces, sensors, actuators, motor drives, inverters and switching power supplies. Typical current consumption is specified at just 0.2mA per channel, while supply voltage operation extends from 2.25V to 5.5V.
Housed in SSOP16 packages, the isolators provide a minimum isolation voltage of 3000Vrms and a common-mode transient immunity (CMTI) rating of 30kV/μs minimum. Toshiba’s magnetic-coupling isolation technology provides isolated signal transmission while maintaining low power requirements.
The new additions comprise the DCL340L0B and DCL340H0B, both providing four forward channels and no reverse channels, and the DCL342L0B and DCL342H0B, which provide two forward and two reverse channels. They complement the existing DCL341L0B and DCL341H0B, offering three forward and one reverse channel for applications such as SPI interfaces.
Together, the range gives designers greater flexibility when specifying isolated communication and control interfaces according to channel configuration, operating speed and application requirements.
The devices are also designed to address the demanding operating environments encountered in industrial electronics, with a -40°C to +125°C temperature range. Their 30kV/μs minimum CMTI performance is intended to support reliable signal isolation in systems subject to rapid voltage transients.
The expanded DCL34xx0B family forms part of Toshiba’s broader digital isolator portfolio, which also includes the DCL54xx01A and DCL52xx00 series for industrial equipment, alongside DCM34xx01 and DCM32xx00 devices targeting automotive applications.
With the addition of four-channel configurations, the portfolio provides engineers with options for implementing isolated interfaces across a range of industrial control architectures while balancing channel requirements, power consumption and communications performance.
The new devices target industrial automation equipment where compact packaging, high isolation performance and low power consumption are important design considerations.
