ADM3251E - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

ADM3251E
Manufacturer

ADI
ChipWorker Part#

CW268725915
Description

Isolated Single Channel Rs-232 Line Driver/Receiver
Documentation

Datasheet

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ADM3251E Specifications

Attribute	Attribute Value

Part Number	ADM3251E
Manufacturer	ADI
ChipWorker Part#	CW268725915
Documentation	Datasheet
	expand all
Product Lifecycle Status	Unknown
RoHS	Non-Compliant

Product Description

Product Details
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 _iso_Power™ integrated, isolated power. There is no requirement to use a separate isolated dc-to-dc converter. Chip-scale transformer _i_Coupler® technology from Analog Devices, Inc., is used both for the isolation of the logic signals as well as for the inte- grated dc-to-dc converter. The result is a total isolation solution.
The ADM3251E contains _iso_Power technology that uses high frequency switching elements to transfer power through thetransformer. 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
### Features and Benefits
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
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

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