PCA9515BDGKR UART Interface IC Signal Buffers, Repeaters Dual Bidirec 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

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 VCC.

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.

Device Information