PCA9513A - NXP Semiconductors

PCA9513A Hot swappable I2C-bus and SMBus bus buffer

The PCA9513A and PCA9514A are hot swappable I2C-bus and SMBus buffers that allow 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 mad.

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 I2C-bus Standard mode, I2C-bus Fast mode, and SMBus standards I Built-in ∆V/∆t rise time accelerators on all SDA and SCL lines (0.8 V threshold) requires the bus pull-up voltage and supply voltage (VCC) to be the same I Rise time accelerator threshold moved from 0.6 V to 0.8 V for improved noise margin I Active HIGH ENABLE input I Active HIGH READY open-drain output I High-impedance SDAn and SCLn pins for .