PCA9510 - NXP

PCA9510 Hot swappable I2C and SMBus bus buffer

The PCA9510 and PCA9511 are hot swappable I2C and SMBus buffers 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, th.

Features

• Bi-directional buffer for SDA and SCL lines increases fanout and prevents SDA and SCL corruption during live board insertion and removal from multi-point backplane systems
• Compatible with I2C standard mode, I2C fast mode, and SMBus standards
• ∆V/∆t rise time accelerators on all SDA and SCL lines (PCA9511 only)
• Rise time accelerator threshold of 0.6 V
• Active high ENABLE input
• Active high READY open-drain output
• High impedance SDA and SCL pins for VCC = 0 V
• 1 V precharge on all SDA and SCL lines (PCA9510 IN only)
• Supports clock stretching and multiple master arbitration/sync.