ADM2485BRWZ Isolated RS-485 by Analog Devices

Status: Production
Series: ADM2485
RoHS: Compliant
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The ADM2485 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E).The device employs Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, and a differential input receiver into a single package. An on-chip oscillator outputs a pair of square waveforms that drive an external transformer to provide isolated power with an external transformer. The logic side of the device can be powered with either a 5 V or a 3.3 V supply, and the bus side is powered with an isolated 5 V supply.The ADM2485 driver has an active high enable. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output port that imposes minimal loading on the bus when the driver is disabled or when VDD1 or VDD2 = 0 V. Also provided is an active high receiver disable that causes the receive output to enter a high impedance state.The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention might cause excessive power dissipation. The part is fully specified over the industrial temperature range and is available in a 16-lead, wide-body SOIC package.

Where to Buy

Prices starting from US$4.94

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Analog Devices
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Newark Electronics
from US$8.20
94
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Chip One Stop
from US$7.62
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element14
from US$7.33
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Features

Half-duplex, isolated RS-485 transceiver
Integrated oscillator driver for external transformer
PROFIBUS® compliant
Complies with ANSI/TIA/EIA RS-485-A-98 and ISO 8482:1987(E)
Data rate: 16 Mbps
5 V or 3.3 V operation (VDD1)
High common-mode transient immunity: >25 kV/μs
Wide-body, 16-lead SOIC package
50 nodes on bus
Isolated DE OUT status output
Thermal shutdown protection
Safety and regulatory approvals
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
Reinforced insulation, VIORM = 560 V peak
Operating temperature range: –40°C to +85°CWide-body, 16-lead SOIC package

Alternative Descriptions

Isolator RS-485 Transceiver I. | Analog Devices
Transceiver, Rs422, Rs485, 1Tx, 1Rx | Newark Electronics
TRANSCEIVER, RS422, RS485, 1TX, 1RX | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADM2485BRWZ?

Additional datasheets, footprints and schematics for ADM2485BRWZ are listed on our Part Details page. You can also find images and similar parts to ADM2485BRWZ on this page.

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What category does ADM2485BRWZ fall under?

The ADM2485BRWZ is listed under Isolated RS-485.

Can I view similar or alternative parts?

You can view similar parts to ADM2485BRWZ when available in the Isolated RS-485 range under the specifications section at the bottom of the details page.

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Is the ADM2485BRWZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for ADM2485BRWZ have stock available?

Authorised distributors including Analog Devices, Newark Electronics, Chip One Stop, element14 and Farnell have stock available or on a lead time for ADM2485BRWZ.

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