8 February 2018

CISSOID offers support to customers replacing Honeywell's obsoleted High Temperature Microelectronics Products

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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.


High-temperature dual channel, full duplex isolated transceiver

Ordering information

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