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Rad-Hard BiSS Communication IC

The MAG-BUS00002-NP IC is a BiSS slave communication device with interfacing capabilities to maximum four SPI slaves. It can be used as a hub between a BiSS master and these SPI slave ASICs. The SPI slave ASICs which can connect to it can range from driver ICs to sensor interfacing ICs (e.g. MAG-POS0002- NP, MAG SEI0002-NP). In addition, multiple BiSS slave devices can also be connected in a daisy chain, which allows easy integration of multiple hubs.


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Key technical benefits

Core performance parameters

– BiSS Serial communication Slave Device
RS-422 PHY interface, 4Mbit/s over 200m cable multiple MAG-BUS in daisy chain connection
– BiSS to SPI bridge
Bidirectional BiSS Slave SPI interface Master, 4 SPI Slave ICs connection per MAG-BUS IC)
– Built in self-test 

Additional features

– Device redundancy capability (Hot/cold-spare)
– Redundancy capabilities (BiSS-channel / SPI slave)
– Operating temperature : -40°C to 125°C

Voltage supplies and power consumption

– 1.25 and 3.3V  supply voltage 

Radiation Hardness

– TID (min.): 100 krad / 1 kGy (Si)
– TID (max.): 100 Mrad / 1 MGy (Si)
– SEL / SEU: > 60 MeV.cm²/mg

Clocking options and communications

– SPI master interface to interface to slave ICs


Packaging information

– QFN-64 pin (9.0 mm x 9.0 mm)



The MAG-BUS00002-NP can be used for following applications:

  • Communication protocol
  • Motion control systems monitoring


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