PCA9615DPZ

PCA9615DPZ is a fast-mode plus (Fm+) SMBus/I²C-bus buffer with hot-swap logic that extends the normal single-ended SMBus/I²C-bus through electrically noisy environments using a differential SMBus/I²C-bus (dI²C) physical layer, which is transparent to the SMBus/I²C-bus protocol layer. It consists of two single-ended to differential driver channels for the SCL (serial clock) and SDA (serial data). The use of differential transmission lines between identical dI²C bus buffers removes electrical noise and common-mode offsets that are present when signal lines must pass between different voltage domains, are bundled with hostile signals, or run adjacent to electrical noise sources, such as high energy power supplies and electric motors. The SMBus/I²C-bus was conceived as a simple slow speed digital link for short runs, typically on a single PCB or between adjacent PCBs with a common ground connection.

• New dI²C-bus buffers offer improved resistance to system noise and ground offset upto 1⁄2 of supply
• EN signal (PCA9615 input) controls PCA9615 hot swap sequence
• Bus idle detect waits for a bus idle condition before connection is made
• Compatible with I²C-bus standard/fast-mode and SMBus, fast-mode plus upto 1MHz
• Single-ended I²C-bus on card side upto 540pF
• Differential I²C-bus on cable side supporting multi-drop bus
• Lock-up free operation
• Supports arbitration and clock stretching across the dI²C-bus buffers
• Powered-off and powering-up high-impedance I²C-bus pins
• TSSOP10 package, temperature range from -40°C to +85°C