PCA9516AD

The PCA9516AD is a 5-channel CMOS I²C-Bus Hub intended for application in I²C-bus and SMBus systems. While retaining all the operating modes and features of the I²C-bus system, it permits extension of the I²C-bus by buffering both the data (SDAn) and the clock (SCLn) lines, thus enabling five buses of 400pF. The I²C-bus capacitance limit of 400pF restricts the number of devices and bus length. Using the bus hub enables the system designer to divide the bus into five segments off of a hub where any segment-to-segment transition sees only one repeater delay.

• 5-channel, bidirectional buffer
• Active high individual repeater enable input
• Open-drain input/outputs
• Lock-up free operation
• Supports arbitration and clock stretching across the repeater
• Powered-off high-impedance I²C pins
• Latch-up testing is done to JEDEC standard JESD78 which exceeds 100mA