ADI ADM3251EARWZ-REEL

The ADM3251E is a high speed, 2.5 kV fully isolated, single-channel RS-232/V.28 transceiver device that operates from a single 5 V power supply. Due to the high ESD protection on the RIN and TOUT pins, the device is ideally suited for operation in electrically harsh environments or where RS-232 cables are frequently being plugged and unplugged. The ADM3251E incorporates dual-channel digital isolators with isoPower integrated, isolated power. There is no requirement to use a separate isolated dc-to-dc converter. Chip-scale transformer iCoupler technology is used both for the isolation of the logic signals as well as for the integrated dc-to-dc converter. The result is a total isolation solution. The ADM3251E conforms to the EIA/TIA-232E and ITU-T V. 28 specifications and operates at data rates up to 460 kbps. Four external 0.1 μF charge pump capacitors are used for the voltage doubler/inverter, permitting operation from a single 5 V supply. The ADM3251E is available in a 20-lead, wide body SOIC package and is specified over the -40°C to +85°C temperature range.

• 2.5 kV fully isolated (power and data) RS-232 transceiver
• isoPower integrated, isolated dc-to-dc converter
• 460 kbps data rate
• 1 Tx and 1 Rx
• Meets EIA/TIA-232E specifications
• ESD protection on RIN and TOUT pins ±8 kV; contact discharge ±15 kV : air gap discharge
• 0.1 μF charge pump capacitors
• High common-mode transient immunity: >25 kV/μs
• Safety and regulatory approvals (pending) UL recognition 2500 V rms for 1 minute per UL 1577 VDE Certificate of Conformity DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 V10RM = 560 V peak
• Operating temperature range: -40°C to +85°C
• Wide body, 20-lead SOIC package

• High noise data communications
• Industrial communications
• General-purpose RS-232 data links
• Industrial/telecommunications diagnostic ports
• Medical equipment