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ADM3251EARWZ

2.5kV isolated RS-232 transceiver, 1Tx/1Rx, 460kbps, isoPower, SOIC-20W

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Manufacturer Part：

ADM3251EARWZ

Package：

20-lead SOIC Wide (13.0 x 7.6 x 2.35mm)

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Description

Product Overview

The ADM3251EARWZ is a 2.5kV fully isolated single-channel RS-232 transceiver from Analog Devices with integrated isoPower DC/DC converter. Operating from a single 5V supply with only 5 external 0.1uF capacitors, it provides complete signal and power isolation for EIA-232E communication at up to 460kbps in a 20-lead wide-body SOIC package.

Key Specifications

Isolation Voltage 2500Vrms
Data Rate 460kbps
Transmitters 1
Receivers 1
Supply Voltage 4.5V to 5.5V (5V nominal)
ESD Protection +/-8kV contact, +/-15kV air gap
Isolation Type iCoupler magnetic
Common Mode Transient Immunity >25kV/us
Package 20-lead SOIC (Wide)
Operating Temperature -40 to +85C

Features

  • 2.5kV full signal and power isolation
  • Integrated isoPower isolated DC/DC converter
  • 460kbps data rate, EIA-232E compliant
  • +/-8kV contact, +/-15kV air gap ESD on RS-232 pins
  • Single 5V supply with 0.1uF charge pump caps
  • High common mode transient immunity >25kV/us
  • UL and VDE safety approvals

Applications

  • Industrial communication isolation
  • Medical equipment RS-232 links
  • High-noise data communication
  • Telecom diagnostic ports

The ADM3251EARWZ is a 2.5kV fully isolated single-channel RS-232 transceiver from Analog Devices with integrated isoPower DC/DC converter. Using iCoupler magnetic isolation technology, it provides complete signal and power isolation without requiring an external isolated power supply. The device operates from a single 5V supply with only 5 external 0.1uF capacitors for the charge pump, and supports data rates up to 460kbps with +/-15kV air gap ESD protection on RS-232 pins.

The ADM3251E combines dual-channel iCoupler digital isolators with an integrated isoPower isolated DC/DC converter. The isoPower converter uses micro-transformers fabricated on the IC die to transfer power across the isolation barrier, generating the isolated 5V supply (VISO) needed for the RS-232 transceiver side. Signal isolation is achieved through additional micro-transformers that magnetically couple digital data across the isolation barrier. The charge pump voltage doubler/inverter generates the +/-10V RS-232 transmit levels from the 5V VISO supply.

Pin Group Type Function
VCC, GND1 Power Logic-side supply and ground
TIN, ROUT I/O Logic-side transmit input, receive output
C1-C5 Cap Charge pump capacitors (0.1uF)
VISO, GND2 Power Isolated-side supply and ground
TOUT, RIN I/O RS-232 transmit output, receive input
  • Industrial PLC RS-232 communication isolation
  • Medical equipment isolated serial links
  • Telecom diagnostic port isolation
  • High-noise factory floor data communication
Manufacturer Part Number Package Notes
ADI ADM3252EARWZ SOIC-20W 3-channel isolated RS-232
TI ISO1176DWR SOIC-16W Isolated RS-485 transceiver
Silicon Labs SI8402AB-B-IS SOIC-16W Isolated I2C, similar isolation
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

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2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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