2-channel Multipoint Fm+ Differential I2C-bus Buffer

The PCA9614 is an Fm+ SMBus/I2C-bus buffer that extends the normal single-ended SMBus/I2C-bus through electrically noisy environments with the use of a differential SMBus/I2C-bus (dI2C) physical layer. The device consists of two single-ended to differential driver channels for the SCL. The devices acts as a bridge between the normal 2-wire single-ended wired-OR SMBus/I2C-bus and the 4-wire dI2C-bus.

2-channel Multipoint Fm+ Differential I2C-bus Buffer

2-channel Multipoint Fm+ Differential I2C-bus Buffer

Where used?

  • Monitor remote temperature/leak detectors in harsh environment
  • Control of power supplies in high noise environment
  • Transmission of I2C-bus between equipment cabinets
  • Commercial lighting and industrial heating/cooling control
  • Any application that requires long I2C-bus runs in electrically noisy environments
  • Any application with multiple power suppliers and the potential for ground offsets up to 2.5 V

Why use?

  • Improved resistance to system noise and ground offset up to 1⁄ 2 of supply voltage
  • Compatible with I2C-bus Standard/Fast-mode and SMBus, Fast-mode Plus up to 1 MHz
  • Lock-up free operation
  • Supports arbitration and clock stretching across the dI2C-bus buffers
  • Powered-off and powering-up high-impedance I2C-bus pins
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

 

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