iC-MB4 QFN28-5x5

BiSS Interface Master iC, 2 channel/8 slaves/RS422 transceiver

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Article description

Product description

iC-MB4 is a BiSS/SSI interface bridge component suitable to implement BiSS/SSI master functionality into any device or platform. BiSS C, BiSS B, and SSI slave devices (e.g. sensors or actuators) can be fully accessed by iC-MB4. Up to 8 devices can be connected. Two physical BiSS/SSI channels enable single-ended communication via internal CMOS and TTL transceivers. Alternatively, one differential BiSS/SSI interface with on-chip RS422 and LVDS transceivers can be enabled.


  • Synchronous and cyclic sensor data acquisition with data rates up to 10 Mbit/s
  • Bidirectional BiSS communication with up to 8 slaves
  • Configurable BiSS/SSI interface: two single-ended channels with TTL/CMOS transceivers or one differential channel with RS422/LVDS transceivers
  • Supports SSI protocol for unidirectional data transmission
  • Slave register operations during cyclic data transfers
  • Automatic line delay compensation
  • Configurable data lengths of up to 64 bit for each sensor
  • CRC verification with up to 16 bits per slave
  • Separate memory banks for free controller access during BiSS sensor data transfers
  • 64 bytes memory for bidirectional register access
  • Parallel or serial (SPI) interface to host e.g. MCU
  • Single 3 V to 5 V supply


  • Motor feedback systems
  • PLCs/Drives
  • Linear and rotary encoders
  • Robotics
  • Bidirectional communication in multi sensor systems
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