ADM2582EBRWZ-REEL7 Analog Devices Digital Isolators ISOLATED RS485 HD/FD 16Mbps IC

1.FEATURES

Isolated RS-485/RS-422 transceiver, configurable as half orfull duplex
isoPower integrated isolated dc-to-dc converter±15 kV ESD protection on RS-485 input/output pinsComplies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)ADM2582E data rate: 16 MbpsADM2587E data rate: 500 kbps5 V or 3.3 V operation
Connect up to 256 nodes on one bus
Open- and short-circuit, fail-safe receiver inputs
High common-mode transient immunity: >25 kV/μs
Thermal shutdown protection
Safety and regulatory approvals
UL recognition: 2500 V rms for 1 minute per UL 1577
VDE Certificates of Conformity
DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
VIORM = 560 V peak
Operating temperature range: −40°C to +85°C
Highly integrated, 20-lead, wide-body SOIC package

2.APPLICATIONS
Isolated RS-485/RS-422
interfacesIndustrial field networks
Multipoint data transmission systems

3.GENERAL DESCRIPTION
The ADM2582E/ADM2587E are fully integrated signal and power isolated data transceivers with ±15 kV ESD protection and are suitable for high speed communication on multipoint transmission lines. The ADM2582E/ADM2587E include an integrated isolated dc-to-dc power supply, which eliminates the need for an external dc-to-dc isolation block. They are designed for balanced transmission lines and comply with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E). The devices integrate Analog Devices, Inc.,iCoupler® technologyto combine a 3-channel isolator, a three-state differential line driver,a differential input receiver, and Analog DevicesisoPower® dc-to-dc converter into a single package. The devices are powered by a single 5 V or 3.3 V supply, realizing a fully integrated signal and power isolated RS-485 solution

The ADM2582E/ADM2587E driver has an active high enable. An active low receiver enable is also provided, which causes the receiver output to enter a high impedance state when disabled.The devices have current limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The parts are fully specified over the industrial temperature range and are available in a highly integrated, 20-lead, wide-bodySOIC package.The ADM2582E/ADM2587E contain isoPower technology thatuses high frequency switching elements to transfer power throughthe transformer. Special care must be taken during printed circuitboard (PCB) layout to meet emissions standards. Refer to the AN-0971 Application Note, Control of Radiated Emissions with isoPower Devices, for details on board layout considerations

4.FUNCTIONAL BLOCK DIAGRAM

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