Meets stringent IEC 60601-1 standards

Linear Technology Korea (CEO: Hong Sa-kwak) announced the launch of the LTM2885, an isolated RS485 µModule® transceiver for protection against high ground-to-ground differentials.

Many industrial, utility, medical, military, and essential safety applications require voltage- and spatially-isolated components to ensure human safety. The LTM2885 provides 6500 VRMS reinforced isolation between the logic-level interface and the transceiver bus pins, far exceeding the IEC60747 basic and reinforced isolation standards.

With creepage and clearance distances greater than 14mm and a distance through insulation (DTI) greater than 0.2mm, the LTM2885 exceeds many overvoltage category II and material group IIIA equipment requirements, including providing two means of patient protection (MOPP) for medical equipment per IEC 60601-1.

The LTM2885 offers many features to provide excellent isolation performance.

Offering ±15kV ESD protection, this RS485 transceiver operates at 20Mbps or 250kbps with low EMI, ensuring interference-free communication for common-mode transients up to 50kV/µs. An internal low-EMI DC/DC converter powers the transceiver and provides 1W of isolated supply output to power external auxiliary components.

Integrated selectable termination ensures proper cable termination, and software control allows termination to be added or removed anywhere on the bus. Operating from a 5V supply, the LTM2885 requires no external components, providing a standalone μModule solution for isolated RS485 serial data communications.

The LTM2885 is offered in commercial, industrial, and automotive versions, supporting operating temperature ranges of 0°C to 70°C, –40°C to 85°C, and –40°C to 105°C, respectively. The LTM2885 is available in a 22mm x 9mm x 5.16mm surface-mount BGA package; all integrated circuits and passive components are housed in Linear Technology’s RoHS-compliant μModule package. Pricing starts at $11.98 each in 1,000-piece quantities.