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PCA9513A - Hot swappable I2C-bus and SMBus bus buffer

General Description

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.

Key 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 Act.

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📁 Similar Datasheet

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Other Datasheets by NXP Semiconductors

Part Number Description
PCA9510A Hot swappable I2C-bus and SMBus bus buffer
PCA9511A Hot swappable I2C-bus and SMBus bus buffer
PCA9514A Hot swappable I2C-bus and SMBus bus buffer
PCA9502 8-bit I/O expander
PCA9506 40-bit I2C-bus I/O port

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PCA9513A; PCA9514A Hot swappable I2C-bus and SMBus bus buffer Rev. 04 — 18 August 2009 Product data sheet 1. General description 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 made, the PCA9513A and PCA9514A provides bidirectional buffering, keeping the backplane and card capacitances isolated. Rise time accelerator circuitry allows the use of weaker DC pull-up currents while still meeting rise time requirements.