The PCA9514DP is a hot swappable I2C-bus and SMBus bus buffer that allows extension of the I2C-bus by buffering both the clock (SCL) and data (SDA) lines. This enables the connection of more devices on the bus or allows the bus to be extended over a longer distance. The PCA9514DP incorporates precharge circuitry that precharges the I2C-bus capacitance during connection, minimizing disturbances to the connected I2C buses.
Applications
- I2C bus extension
- SMBus bus extension
- Hot-swappable systems
- Server systems
- Telecommunications equipment
- Networking equipment
- Industrial control systems
Features
- Bi-directional buffer for I2C and SMBus
- Supports I2C Standard-mode, Fast-mode, and Fast-mode Plus
- Hot swappable functionality
- Precharge circuitry to minimize bus disturbances during connection
- Operating voltage: 3.0 V to 5.5 V
- Operating temperature: -40 °C to +85 °C
- Package: 8-pin DIP, SOIC, TSSOP
- Logic Level: mixed mode - translates between voltage levels
Benefits
- Extends the I2C-bus length and allows for more devices on the bus
- Minimizes bus disturbances during hot-swapping, ensuring system stability
- Simplifies system design by providing a reliable I2C-bus buffering solution
- Improves system performance by allowing for faster I2C-bus speeds
Additional Details
The PCA9514DP's hot swappable functionality allows devices to be safely connected or disconnected from the I2C-bus while the system is powered on. This feature is especially useful in server and telecommunications applications where uptime is critical. The integrated precharge circuitry minimizes the voltage spikes that can occur during connection, preventing damage to the connected devices. The device is available in various package options to suit different application requirements. It also provides voltage level translation.
