3 November 2020

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Dual Channel Data Isolated Transceiver

RHEA is  a high temperature data transmission solution with galvanic isolation of 2.5kV and operating reliably from -55°C to +225°C. The CHT-RHEA is a single chip dual channel, full duplex transceiver (2 transmit and 2 receive channels). The magnetic isolation on each channel is ensured by an external tiny pulse transformer, of which the core diameter does not exceed 6mm (0.24”). The complete 4-channel data transmission requires one instance of CHT-RHEA on each side of the pulse transformers.

RHEA is part of CISSOID’s complete isolated gate driver technology HADES®, where it ensures transmission of control and feedback signals across the low and high voltage domains.

Typical performances:

  • Temperature range: -55°C to +225°C
  • Data rate:  2Mbits/s
  • Transmission delay below 100ns
  • Jitter lower than 21ns
  • Immunity to dV/dt : 50kV/µs.
  • Available packaging: ceramic SOIC28



  • Isolated gate drive for IGBT, MOSFET, JFET and SiC Transistors
  • Isolated sensor interfaces
  • Galvanic isolation of A-D converters
  • Galvanic isolation of standard RS-232 /
  • RS-422 / RS-485 / I2C transmission links
  • Industrial field bus isolation
  • Industrial power inverters
  • Motor drives and battery management in EV / HEV

An evaluation kit EVK-RHEA implementing a high-temperature full duplex isolated transceiver based on CHT-RHEA is available at Cissoid.

If you need support for your high temperature design, contact Cissoid.

Download CISSOID's Altium Library for IC symbols and package footprints. For installation, read the related Application Note.


High-temperature dual channel, full duplex isolated transceiver

Ordering information

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