PCA9510A - NXP Semiconductors

PCA9510A Hot swappable I2C-bus and SMBus bus buffer

The PCA9510A is a hot swappable I2C-bus and SMBus buffer that allows I/O card insertion into a live backplane without corrupting the data and clock buses. Control circuitry prevents the backplane from being connected to the card until a stop command or bus idle occurs on the backplane without bus contention on the card. When the connection is made, the PCA95.

Features

I Bidirectional buffer for SDA and SCL lines increases fan-out and prevents SDA and SCL corruption during live board insertion and removal from multipoint backplane systems I Compatible with Standard-mode I2C-bus, Fast-mode I2C-bus, and SMBus standards I Active HIGH ENABLE input I Active HIGH READY open-drain output I High-impedance SDAn and SCLn pins for VCC = 0 V I 1 V precharge on SDAIN and SCLIN inputs I Supports clock stretching and multiple master arbitration and synchronization I Operating power supply voltage range: 2.7 V to 5.5 V I 5 V tolerant I/Os I 0 Hz to 400 kHz clock frequency I.