Advanced digital isolators offer high-speed multi-channel operation

12-05-2023 | Toshiba Electronics | Semiconductors

Toshiba Electronics Europe GmbH has released its DCL54xx01 series of digital isolators for providing stable high-speed digital communications even in the harshest factory floor environments. The isolators offer protection against the powerful voltage pulses endemic in the industrial workspace and can render common-mode transients across data line infrastructure. Members of the latest quad-channel isolator series will block these destructive transients across data lines, displaying a CMTI of 100kV/μs (min) while supporting data transmission rates up to 150Mbps.

These devices offer varied channel directions, output logic combinations, and enable controls to accommodate various use cases. Four provide four forward channels and the other two offer three forward channels and one reverse channel. Two of the four forward channel devices offer no enable control, and the additional two feature output enable. The devices with three forward channels and one reverse channel include an input disable function. The default output logic is low for three devices, and for the other three, it is high.

The new digital isolators are based on the company's proprietary magnetic coupling type insulated transmission method and will complement the devices utilising LED-based optical isolation technology. The members of the series provide a typical pulse width distortion of just 0.8ns and a signal delay rated at 10.9ns. All six isolators provide a maximum withstanding isolation voltage of 5,000V for one minute. Acceptable power supply inputs for the VDD1 and VDD2 range from 2.25V to 5.5V. The devices are provided in SOIC16-W packages and can function over a temperature range of -40 to 110.

The new digital isolators aim to protect industrial automation systems, such as PLC and I/O interfaces. Other uses include motor control applications and inverters.

By Seb Springall