PCA9527 Overview
Key Specifications
Description
The PCA9527 is a 3-channel bidirectional open-drain bus buffer for Display Data Control (DDC) clock, data and Consumer Electronic Control (CEC) for HDMI application. The device has two power supply pins to allow voltage level shift from 2.7 V to 5 V, and a rise time accelerator on port A of each DDC clock and data for driving longer cable (up to 18 meters or 1400 pF reliably without violating the bus rise time).
Key Features
- Using the PCA9527 enables the system designer to isolate bus capacitance to meet HDMI DDC version 1.3 distance speciļ¬cation
- The SDAx and SCLx pins are overvoltage tolerant and are high-impedance when the PCA9527 is unpowered
- This results in a LOW on the port B translating into a nearly 0 V LOW on port A, providing zero offset
- Port A of two or more PCA9527s can be connected t
