PCA9515AD,118

PCA9515AD,118 is a CMOS integrated circuit 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 (SDA) and the clock (SCL) lines, thus enabling two buses of 400pF. The I²C-bus capacitance limit of 400pF restricts the number of devices and bus length. Using the PCA9515A enables the system designer to isolate two halves of a bus, thus more devices or longer length can be accommodated. It can also be used to run two buses, one at 5V and the other at 3.3V or a 400KHz and 100KHz bus, where the 100KHz bus is isolated when 400KHz operation of the other is required.

• Supply voltage range from 2.3 to 3.6V
• 2-channel, bidirectional buffer
• I²C-bus and SMBus compatible
• Active HIGH repeater enable input
• Open-drain input/outputs and lock-up free operation
• Supports arbitration and clock stretching across the repeater
• Accommodates standard-mode and fast-mode I²C-bus devices and multiple hosts
• 5.5V tolerant I²C-bus and enable pins
• Powered-off high-impedance I²C-bus pins
• 8 pin SOIC package and operating temperature range from -40 to 85°C