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PCA9514A - Hot swappable I2C-bus and SMBus bus buffer

This page provides the datasheet information for the PCA9514A, a member of the PCA9513A Hot swappable I2C-bus and SMBus bus buffer family.

Datasheet Summary

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.

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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Datasheet preview – PCA9514A

Datasheet Details

Part number PCA9514A
Manufacturer NXP Semiconductors
File Size 163.72 KB
Description Hot swappable I2C-bus and SMBus bus buffer
Datasheet download datasheet PCA9514A Datasheet
Additional preview pages of the PCA9514A datasheet.

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Full PDF Text Transcription

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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.
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