The THCS251 is a member of the transceiver family of maulti-gigabit transceiver used in ultrahigh-speed bidirectional point-to-point data transmission systems. The THCS251 supports an effective serial interface speed of up to 4.6Gbps. Selectable Parallel I/O up to 35-bit defines direction of signals and an output buffer type. Up to two channel ,I2C works as I2C bridge which extend to the other. The sampling clock can be selected either from external reference clock or from internal oscillator (OSC).


  • Support up to 35-bits GPIO
  • Internal oscillator clock mode not required input clock for GPIO sampling
  • Full duplex communication by two pairs of differential signal
  • Selectable output buffer open-drain or push-pull
  • Support up to 8-bits low speed GPIO in low power Standby mode
  • I2C compatible 2-wire serial interface bridge function up to 1MHz
  • I/O Expander for 2-wire serial interface to parallel GPIO
  • Maximum total bandwidth up to 4.67Gbps in full duplex bi-directional transmission mode
  • Integrated adaptive equalizer for long or lossy media
  • 8B10B encoding and decoding
  • Configurable digital noise filter
  • Error detection and indication
  • External reference clock frequency: 9-133.3MHz
  • Spread Spectrum Clock Generator to reduce EMI
  • Operating single power supply voltage: 1.7 V - 3.6 V

Block Diagram

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THCS25x Series