DESCRIPTION

· The PCA9615 is a Fast-mode Plus (Fm+) SMBus/I2C-bus buffer 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.

· 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.

· The PCA9615 has two supply voltages, VDD(A) and VDD(B), ranging from 2.3 V to 5.5 V and 3.0 V to 5.5 V respectively.

FEATURES

· Extends SMBus/I2C-bus through noisy environments using dI2C physical layer.

· Two single-ended to differential driver channels for SCL and SDA.

· Removes electrical noise and common-mode offsets.

· Compatible with existing SMBus/I2C-bus devices.

· Automatic signal direction, no external control required.

· Supports 'hot swap' applications.

APPLICATIONS

· Rugged high noise environments.

· Longer cable applications.

· Systems requiring insertion or removal of modules or cards without disruption to existing signals.

· Applications extending bus length or running long cables.