ADM2491EBRWZ Isolated RS-485 by Analog Devices

Status: Production
Series: ADM2491E
RoHS: Compliant
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The ADM2491E is an isolated data transceiver with ±8 kV ESD protection and is suitable for high speed, half- or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter outputs and the receiver inputs share the same transmission line. Transmitter output Pin Y is linked externally to receiver input Pin A, and transmitter output Pin Z to receiver input Pin B.The ADM2491E is designed for balanced transmission lines and complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E). The device employs Analog Devices, Inc., iCoupler® technology to combine a 3-channel isolator, a threestate differential line driver, and a differential input receiver into a single packageThe differential transmitter outputs and receiver inputs feature electrostatic discharge circuitry that provides protection to ±8 kV using the human body model (HBM). The logic side of the device can be powered with either a 5 V or a 3.3 V supply, whereas the bus side requires an isolated 5 V supply.The device has current-limiting and thermal shutdown features to protect against output short circuits and situations where bus contention could cause excessive power dissipation.The ADM2491E is available in a wide body, 16-lead SOIC package and operates over the −40°C to +85°C temperature range.

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Prices starting from US$2.91

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Richardson RFPD
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Features

Isolated, RS-485/RS-422 transceiver, configurable as half- or full-duplex
±8 kV ESD protection on RS-485 input/output pins
16 Mbps data rate
Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482: 1987(E)
Suitable for 5 V or 3.3 V operation (VDD1)
High common-mode transient immunity: >25 kV/µs
Receiver has open-circuit, fail-safe design
32 nodes on the bus
Thermal shutdown protection
Safety and regulatory approvals
UL recognition: 5000 V rms isolation voltage 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 = 849 V peak
See data sheet for additional features

Alternative Descriptions

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


Frequently Asked Questions

Where can I find additional details, specifications and documents for a ADM2491EBRWZ?

Additional datasheets, footprints and schematics for ADM2491EBRWZ are listed on our Part Details page. You can also find images and similar parts to ADM2491EBRWZ on this page.

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What category does ADM2491EBRWZ fall under?

The ADM2491EBRWZ is listed under Isolated RS-485.

Can I view similar or alternative parts?

You can view similar parts to ADM2491EBRWZ 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 ADM2491EBRWZ RoHS compliant?

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

Which authorised distributors for ADM2491EBRWZ have stock available?

Authorised distributors including Analog Devices, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for ADM2491EBRWZ.

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