PCA9527DPZ

PCA9527DPZ is a 3-channel bidirectional open-drain bus extender for HDMI, I²C-bus and SMBus. It is a 3-channel bidirectional open-drain bus buffer for display data control (DDC) clock, data and consumer electronic control (CEC) for HDMI application. This device has two power supply pins to allow voltage level shift from 2.7V to 5V, and a rise time accelerator on port A of each DDC clock and data for driving longer cable (upto 18 meters or 1400pF reliably without violating the bus rise time). The 5V tolerant CEC channel is internally connected to VCC(B) and has no rise time accelerator. The CEC channel can be used as an interrupt or reset. While retaining all the operating modes and features of the I²C-bus system during the level shift, it also permits extension of the I²C-bus by providing bidirectional buffering for data (SDA), clock (SCL), and CEC. Using this device it enables the system designer to isolate bus capacitance to meet HDMI DDC version 1.3 distance specification.

• 3-channel, bidirectional buffer isolates capacitance allowing 1400pF on port A and 400pF on port B
• Exceeds 18 meters (above the maximum distance for HDMI DDC)
• Rise time accelerator and normal I/O on port A (no accelerator for CEC)
• Static level offset on port B
• Voltage level translation from 2.7V to 5.5V
• CEC is 5V tolerant, powered by VCC(B)
• I²C-bus, SMBus and DDC-bus compatible, active HIGH buffer enable input
• Open-drain input/outputs, lock-up free operation
• Supports arbitration and clock stretching across the repeater
• TSSOP10 package, temperature range from -40°C to +85°C