DESCRIPTION

The PCA9548 is a octal bi-directional translating switch controlled by the I2C-bus. The SCL/SDA upstream pair fans out to eight downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable Control Register.

FEATURES

? 1-of-8 bi-directional translating switches

? I2C interface logic; compatible with SMBus standards

? Active LOW Reset Input

? 3 address pins allowing up to 8 devices on the I2C-bus

? Channel selection via I2C-bus, in any combination

? Power-up with all switch channels deselected

? Low RdsON switches

? Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses

? No glitch on power-up

? Supports hot insertion

? Low stand-by current

? Operating power supply voltage range of 2.3 V to 5.5 V

? 5 V tolerant Inputs

? 0 kHz to 400 kHz clock frequency

? ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115 and 1000 V per JESD22-C101

? Latchup testing is done to JESDEC Standard JESD78 which exceeds 100 mA

? Packages offered: SO24, TSSOP24