The OSEPP I²C Expansion Shield is an Arduino-compatible daughter (extension) card. This shield provides easy interconnection with other I²C devices, such as the OSEPP Sensor Modules family. Additionally, this shield integrates the PCA9546A I²C switch from Texas Instruments that provides 4 additional isolated I²C buses to enable the use without collisions of multiple I²C devices with same I²C addresses. The main I²C bus and each of the 4 additional I²C buses are brought out to a robust latchable 4-pin connector that allow easy plug and play functionality. 100% Arduino compatible. 1-to-4 I²C switch to provide four isolated I²C buses. Provides pass through of all Arduino I/O, reset button and ICSP connector. Stackable with up to eight other Arduino shields. Works with both 3.3V and 5V boards. Specifications Catalog No. 2760448 Mfg. Part No. I2CSHD-01 I²C Addresses (7-Bit) 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77 Dimensions 53.3 × 66.6mm Power Consumption 0.1mW UPC 899262000169 Connector Pin Definitions Pin 1 Power Pin 2 I²C Data Pin 3 Ground Pin 4 I²C Clock Technical Schematic (PDF)PCA9546A Technical Data Sheet (PDF)⚠️ WARNING: CHOKING HAZARD: Small parts. Not for children under 3 yrs.
