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