Analog Devices Inc. ADM2587E Isolated RS-485 Transceiver
Analog Devices Inc. ADM2587E Isolated RS-485 Transceiver is a fully integrated signal and power isolated data transceiver, featuring ±15kV ESD protection. The ADM2587E is suitable for high speed communication on multipoint transmission lines. This device includes an integrated isolated DC-to-DC power supply, which eliminates the need for an external DC-to-DC isolation block.
The ADM2587E integrates iCoupler® technology to combine a 3-channel isolator, a three-state differential line driver, a differential input receiver, and an isoPower DC-to-DC converter into a single package. The device is powered by a single 5V or 3.3V supply, realizing a fully integrated signal and power isolated RS-485 solution.
The ADM2587E Driver has an active high enable. An active low receiver enable is also provided that causes the receiver output to enter a high impedance state when disabled.
The ADM2587E has current limiting and thermal shutdown features to protect against output short circuits and situations where bus contention may cause excessive power dissipation. The part is fully specified over the industrial temperature range and is available in a highly integrated, 20-lead, wide-body SOIC package. This device is designed for balanced transmission lines and complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E).
Features
- Isolated RS-485 transceiver, configurable as half or full duplex
- isoPower™ integrated isolated DC/DC converter
- ±15kV ESD protection on RS485 input/output pins
- Complies with ANSI/TIA/EIA-485-A-98 and ISO 8482:1987(E)
- ADM2587E data rate: 500 kbps
- 5.0V or 3.3V operation
- Connect up to 256 nodes on one bus
- Open- and short-circuit, fail-safe receiver inputs
- High common-mode transient immunity: >25kV/μs
- Thermal shutdown protection
- Safety and regulatory approvals
- UL recognition: 2500Vrms for 1 minute per UL 1577
- VDE Certificates of Conformity
- DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
- VIORM = 560V peak
- Operating temperature range: -40°C to +85°C
- Highly integrated, 20-lead, wide-body SOIC package
Applications
- Chemical analysis, such as networked spectrum analyzers
- Environmental analysis, such as water quality analysis and treatment
- Industrial PCs and printers
- ATM, POS, self-service kiosks
- Industrial networked instrumentation
- Large form factor weigh scales
Development Tools
Analog Devices Inc. EVAL-ADM2587E Evaluation Board
Evaluation and prototyping platform for the ADM2587E Isolated RS-485 Transceiver.
Block Diagram
Pin Designations
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