NXP Semiconductors PCA961xDP 2-Channel Buffer

NXP PCA961xDP 2-Channel Multipoint Differential I²C-Bus Buffers are Fast-mode Plus (Fm+) SMBus/I²C-bus buffers that extend 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. These devices consist of two single-ended to differential driver channels for the SCL (serial clock), SDA (serial data). Using differential transmission lines between identical dI²C bus buffers, PCA961xDP 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. NXP PCA961xDP 2-Channel Multipoint Differential I²C-Bus Buffers are ideally suited for rugged high noise environments and/or longer cable applications, allow multiple slaves, and operate at bus speeds up to 1MHz clock rate. Cables can be extended to at least three meters (3m) or longer cable runs at lower clock speeds. The dI²C-bus buffers are compatible with existing SMBus/I²C-bus devices and can drive Standard, Fast-mode, and Fast-mode Plus devices on the single-ended side.