ADM3251E

PRODUCTION

Isolated Single Channel RS-232 Line Driver/Receiver

Data Sheet (Rev. G) Product Selection Table

Part Models: 2
1ku List Price: Starting From $4.05

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Overview

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 R_IN and T_OUT 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
- UL recognition
  - 2500 V rms for 1 minute per UL 1577
- VDE Certificate of Conformity (pending)
  - DIN EN 60747-5-2 (VDE 0884 Teil 2): 2003-01
- CSA Component Acceptance Notice #5A (pending)
Operating temperature range: −40°C to +85°C
Wide body, 20-lead SOIC package

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 R_IN and T_OUT 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 from Analog Devices, Inc., 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 contains isoPower technology that uses high frequency switching elements to transfer power through the transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. Refer to Application Note AN-0971, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations. 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.

Applications

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

Part Models: 2
1ku List Price: Starting From $4.05

Documentation

Frequently Asked Question 1

FAQ 05/17/2017

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADM3251EARWZ	20-Lead SOIC (Wide)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADM3251EARWZ-REEL	20-Lead SOIC (Wide)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Mar 13, 2024 - 23_0069 Qualification Notification of Alternate Wafer Fab Site at ADI Limerick for Select Isolator Products
		PCN23_0069_Form Material_Report Qualification Results Summary Delta Qualification Matrix Qualification Results Summary
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Sep 22, 2015 - 15_0135 Alternate Assembly Site of Select Isolator Products in 8L/16L SOIC_N, 16L/20L SOIC_W and 16L/20L SOIC_IC at ASE Chungli
		PCN15_0135_Form Material_Report Detailed Change Description Qualification Results Summary
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Nov 21, 2013 - 13_0290 ADM3251E Datasheet Correction
		PCN13_0290_Form Material_Report
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Feb 27, 2012 - 11_0066 Qualification of Alternate Fab Foundry Gold Plating Process Site for Isolation Products at ADI Limerick.
		PCN11_0066_Form Material_Report Qualification Plan Summary Flow Chart
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Aug 4, 2010 - 10_0117 Halogen Free Material Change for SOIC_W Products at Carsem
		PCN10_0117_Form Material_Report Reliability Report
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Nov 16, 2009 - 06_0157 Qualification of the 8" H6 Thin Film BiPolar Wafer Fab Process at Analog Devices, Limerick, Ireland
		Material_Report PCN06_0157_Form RQR03599A
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION
Aug 10, 2009 - 09_0120 ADM3251E Datasheet Specifications Change.
		Material_Report PCN09_0120_Form
ADM3251EARWZ	PRODUCTION
ADM3251EARWZ-REEL	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Evaluation Kits

ADM3251E Evaluation board

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Features and Benefits

2.5 kV fully isolated (power and data) RS-232 transceiver
Convenient connections for power and signal through screw terminal blocks
5 V operation
Easily configurable through jumper connections
Test points for measuring all signals
All external components required for correct operation

Product Details

The ADM3251E evaluation board can be used for easy evaluation of the ADM3251E power and signal isolated RS-232 transceiver. Screw terminal blocks provide convenient connections for the power and signal connections. Test points are included on the power and signal lines on both sides of the isolation barrier.