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PCA9521 Datasheet Fast dual bidirectional bus buffer

Manufacturer: NXP Semiconductors

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General Description

The PCA9521 is a monolithic bipolar integrated circuit for bus buffering in applications including I2C-bus, SMBus, PMBus, and other systems based on similar principles.

The buffer extends the bus load limit by buffering both the SCL and SDA lines.

It supports up to 400 pF loads on each side of the buffer at 400 kHz.

Overview

PCA9521 Fast dual bidirectional bus buffer Rev.

2 — 19 March 2013 Product data sheet 1.

Key Features

  • Dual, bidirectional unity gain buffer.
  • Fast switching times allow operation in excess of 1 MHz.
  • Supports I2C-bus (Standard-mode and Fast-mode), SMBus (standard and high power mode), PMBus and IPMB.
  • Enable allows bus segments to be disconnected.
  • Low standby current when not enabled.

More Datasheets from NXP Semiconductors

Part Number Description
PCA9522 Fast dual bidirectional bus buffer
PCA9525 Simple 2-wire bus buffer
PCA9527 3-channel bidirectional bus extender
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PCA9507 2-wire serial bus extender
PCA9510A Hot swappable I2C-bus and SMBus bus buffer
PCA9511A Hot swappable I2C-bus and SMBus bus buffer
PCA9513A Hot swappable I2C-bus and SMBus bus buffer
PCA9514A Hot swappable I2C-bus and SMBus bus buffer