PCA9545

INTEGRATED CIRCUITS PCA9545 4-channel I2C switch with interrupt logic and reset Product data Supersedes data of 2001 Nov 08 2002 Mar 28 Philips Semiconductors Philips Semiconductors Product data 4-channel I2C switch with interrupt logic and reset PCA9545 passed by the PCA9545. This allows the use of different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate with 5 V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5 V tolerant. PIN CONFIGURATION A0 1 20 VDD 19 SDA 18 SCL 17 INT 16 SC3 15 SD3 14 INT3 13 SC2 12 SD2 11 INT2 FEATURES 1-of-4 bi-directional translating switches I2C interface logic; compatible with SMBus standards 4 active low interrupt inputs Active low interrupt output Active low reset input 2 address pins allowing up to 4 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 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 to 400 kHz clock frequency ESD protection exceeds 2000 V HBM per JESD22-A114, Latch-up testing is done to JESDEC Standard JESD78 which Package Offer: SO20, TSSOP20 DESCRIPTION The PCA9545 is a quad bi-directional translating switch...