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ADI ADM3251EARWZ Isolated, Single-Channel IC-STOCKS

  • Author:salmon ye
  • Source:www.ic-stocks.com
  • Release on:2019-05-14

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):2006-12VIORM = 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


The ADM3251E is a high speed, 2.5 kV fully isolated, singlechannelRS-232/V.28 transceiver device that operates from asingle 5 V power supply. Due to the high ESD protection on theRIN and TOUT pins, the device is ideally suited for operation inelectrically harsh environments or where RS-232 cables arefrequently being plugged and unplugged.

The ADM3251E incorporates dual-channel digital isolators withisoPower™ integrated, isolated power. There is no requirementto use a separate isolated dc-to-dc converter.

Chip-scale transformeriCoupler® technology from Analog Devices, Inc., is usedboth for the isolation of the logic signals as well as for theintegrated dc-to-dc converter. The result is a total isolation solution.

The ADM3251E conforms to the EIA/TIA-232E and ITU-T V. 28specifications and operates at data rates up to 460 kbps.Four external 0.1 μF charge pump capacitors are used for thevoltage doubler/inverter, permitting operation from a single5 V supply.

The ADM3251E is available in a 20-lead, wide body SOIC packageand is specified over the −40°C to +85°C temperature range.

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