DESCRIPTION

· The ADuM1250/ADuM1251 are hot swappable digital isolators with nonlatching, bidirectional communication channels compatible with I2C interfaces.

· They eliminate the need for splitting I2C signals into separate transmit and receive signals for use with standalone optocouplers.

· The ADuM1250 provides two bidirectional channels, supporting a complete isolated I2C interface.

· The ADuM1251 provides one bidirectional channel and one unidirectional channel for applications where a bidirectional clock is not required.

· Both devices contain hot swap circuitry to prevent glitching data when an unpowered card is inserted onto an active bus.

· Based on iCoupler® chip scale transformer technology, they offer functional, performance, size, and power consumption advantages over optocouplers.

FEATURES

· Bidirectional I2C communication with open-drain interfaces.

· Suitable for hot swap applications with 30 mA current sink capability.

· Operates at 1000 kHz with 3.0 V to 5.5 V supply/logic levels.

· 8-lead, RoHS compliant SOIC package with high temperature operation up to 125°C.

· Qualified for automotive applications with safety and regulatory approvals.

· Reinforced VIORM = 560 V peak, 2500 V rms for 1 minute per UL 1577.

· Complies with IEC/EN/CSA 62368-1, IEC/CSA 61010-1, CAN/CSA-C22.2 No. 14-18, and GB4943.1-2011.

APPLICATIONS

· Isolated I2C, SMBus, or PMBus interfaces.

· Multilevel I2C interfaces in power supplies and networking.

· Power over Ethernet and hybrid electric vehicle battery management systems.