PCA9515B Dual Bidirectional I2C Bus and SMBus Repeater

1 Features

• Two-Channel Bidirectional Buffers
• I²C Bus and SMBus Compatible
• Support for I²C Standard Mode (100-kHz) and Fast Mode (400-kHz)
• Active-High Repeater-Enable Input
• Open-Drain I²C Input and Output
• 5.5-V Tolerant I²C Input and Output and Enable Input Support Mixed-Mode Signal Operation
• Lockup-Free Operation
• Accommodates Standard Mode, Fast Mode I²C Devices, and Multiple Masters
• Supports Arbitration and Clock Stretching Across Repeater
• Powered-Off High-Impedance I²C Pins
• Latch-Up Performance Exceeds 100-mA Per JESD 78, Class I
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 1000-V Charged-Device Model (C101)

2 Applications

• Servers
• Routers (Telecom Switching Equipment)
• Industrial Equipment
• Products with Many I²C Slaves and Long PCB Traces

3 Description

The PCA9515B is a BiCMOS dual bidirectional buffer integrated circuit intended for I²C bus and SMBus applications. The device contains two identical bidirectional open-drain buffer circuits that enables I²C and similar bus systems to be extended (or add slaves) without degrading system performance. The dual bidirectional I²C buffer is operational at 2.3 V to 3.6 V V_CC.

The PCA9515B buffers both the serial data (SDA) and serial clock (SCL) signals on the I²C bus, while retaining all the operating modes and features of the I²C system. The device allows two buses, of 400-pF bus capacitance, to be connected in an I²C application.

1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

4 Revision History

Changes from A Revision (May 2013) to B Revision

• Added Device Information table, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. Go
• Deleted the ordering information. See POA at the end of the datasheet.Go

Changes from * Revision (March 2012) to A Revision

• Updated the V_OL and V_OL - V_ILC specifications.Go

5 Pin Configuration and Functions

DGK Package

8-Pin VSSOP

Top View

NC - No internal connection