NXP PCA9848BSMP

Переключатель шины2 x 8:10.9V ~ 3.6V, 1.65V ~ 3.6V

Overview

The PCA9848PWJ is an ultra-low voltage, octal bidirectional translating switch controlled viathe I²C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels.Any or all SCx/SDx channels can be selected, determined by the programmable controlregister. This feature allows multiple devices with the same I²C-bus address to reside onthe same bus. The switch device can also separate a heavily loaded I²C-bus into separatebus segments, eliminating the need for a bus buffer.

The pass gates of the switches are constructed such that the VDD1 pin is used to limit themaximum high voltage which is passed by the PCA9848. This allows the use of differentbus voltages on each channel, so that 0.8 V, 1.8 V, 2.5 V or 3.3 V parts can communicatewithout any additional protection. External pull-up resistors pull the bus up to the desiredvoltage level for each channel. All I/O pins are 3.6 V tolerant.

Features