The ADuM2250/ADuM2251 are hot swappable digital isolators with nontlatching, bidirectional communication channels and are compatible with I²C interfaces. This eliminates the need for splitting I²C signals into separate transmit and receive signals for use with stand-alone optocouplers.

The ADuM2250 provides two bidirectional channels, supporting a complete isolated I²C interface. The ADuM2251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required.

The ADuM2250/ADuM2251 contain hot swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus.

These isolators are based on iCoupler^® chip scale transformer technology from Analog Devices, Inc. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages compared to optocouplers. The ADuM2250/ADuM2251 integrate iCoupler channels with semiconductor circuitry to enable a complete, isolated I²C interface provided in a small form factor package.

Applications

• Isolated I²C, SMbus, or PMBus Interfaces
• Multilevel I²C interfaces
• Power supplies
• Networking
• Power over Ethernet

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.