Power isolated RS-485 transceiver delivers ±15 kV ESD protection

Analog Devices Inc.'s (ADI) latest ADM2682E and ADM2687E are single-chip 5-kVrms signal- and power-isolated RS-485 data transceivers that meet the safety isolation requirements of high voltage systems in motor, power and energy control systems.

The new data transceivers also feature ±15-kV ESD protection on the bus pins. They are designed with ADI's iCoupler isolation technology and combine a 3-channel isolator, a three-state differential line driver and a differential input receiver based on ADI's isoPower isolated dc-to-dc converter technology. Packaged in a single 10 mm x 13 mm surface mount package with greater than 8 mm minimum creepage and clearance, the transceivers occupy 70 percent less board space than the multiple discrete components typically used.

Key highlights:

• 5-kVrms isolation per UL1577 meets system isolation needs for safer high-voltage systems.
• Integrated isolated isoPower dc-to-dc converter reduces design-time and provides industries smallest footprint.
• ±15-kV ESD protection on RS-485 input/output pins increases robustness of pins connected to external environment.
• 8-mm creepage and clearance meets safety requirements for medical applications.

Pricing: In a 16-lead, wide-body SOIC, the ADM2682E is priced at $7.50 each and the ADM2687E is $6.50.

Availability: Full production will be available in June 2011.