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PCA9522 - Fast dual bidirectional bus buffer

Datasheet Summary

Description

The PCA9522 is a monolithic bipolar integrated circuit for bus buffering in applications including I2C-bus, SMBus, etc.

It includes hot insertion logic for detecting stop and idle conditions, making it ideal for live insertion into backplanes.

Features

  • Dual, bidirectional unity gain isolating buffer.
  • Hot insertion logic prevents data and clock bus corruption for live backplane.

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Datasheet preview – PCA9522

Datasheet Details

Part number PCA9522
Manufacturer NXP Semiconductors
File Size 157.98 KB
Description Fast dual bidirectional bus buffer
Datasheet download datasheet PCA9522 Datasheet
Additional preview pages of the PCA9522 datasheet.

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Full PDF Text Transcription

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PCA9522 Fast dual bidirectional bus buffer with hot insertion logic Rev. 1 — 28 September 2011 Product data sheet 1. General description The PCA9522 is a monolithic bipolar integrated circuit for bus buffering in applications including I2C-bus, SMBus, etc. It includes hot insertion logic for detecting stop and idle conditions, making it ideal for live insertion into backplanes. The buffer extends the bus load limit by buffering both the SCL and SDA lines. The PCA9522 is a drop-in replacement for the IES5502, with only the maximum bus voltage reduced from 15 V to 10 V. Hot insertion logic allows the IC to be plugged into live backplanes without causing data corruption on the bus. The open-collector ready signal (RDY) indicates when the connection has been made.
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