ADM2563E Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The ADM2563E is a fully integrated, signal-and-power isolated RS-485 transceiver providing 3kV RMS galvanic isolation and ±15kV IEC ESD protection on bus pins, enabling robust long-distance serial communication in high-voltage industrial environments. It integrates an isolated DC-DC converter eliminating the need for a separate isolated power supply. Available worldwide with fast shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- ADM2563E Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3kV RMS galvanic isolation barrier protects host circuitry from high-voltage transients and ground potential differences on RS-485 networks
- ±15kV IEC 61000-4-2 ESD protection on bus pins prevents damage from electrostatic discharge during field installation and hot-plug events
- Integrated isolated DC-DC converter eliminates external isolated power supply, reducing BOM count and board space
- RS-485 half-duplex transceiver supports data rates up to 500kbps over multi-drop bus with up to 32 unit loads
- Small outline SOP package simplifies PCB integration for isolated serial interface nodes in industrial and automation systems
Applications
The ADM2563E is ideal for industrial automation networks, building management systems, and process control equipment where RS-485 communication nodes must be galvanically isolated from the host processor to prevent ground loop noise and protect against high-voltage faults. Its integrated isolated power supply makes it especially useful in remote sensor nodes, motor drive serial interfaces, and PLC expansion modules where running a separate isolated rail is impractical. The ±15kV ESD rating also suits it for field-installed instrumentation and outdoor communications equipment subject to electrostatic discharge events.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What isolation voltage does the ADM2563E provide and how does this protect a host microcontroller in an industrial environment?
The ADM2563E provides 3kV RMS galvanic isolation between the logic side and the RS-485 bus side, which protects the host microcontroller from high-voltage transients, ground potential differences, and fault voltages that commonly appear on industrial RS-485 field wiring. Without this isolation barrier, a ground fault or lightning-induced surge on the bus could propagate directly into the microcontroller and destroy it; the 3kV barrier blocks that energy path and keeps the host circuit safe.
Does the ADM2563E require an external isolated power supply on the bus side, or is power isolation built in?
The ADM2563E integrates an isolated DC-DC converter on-chip, which generates the isolated power supply for the bus-side transceiver from the logic-side VCC rail, eliminating the need for an external isolated 5V or 3.3V supply. This integration reduces BOM complexity by removing at least one isolated converter module, several capacitors, and associated PCB routing, which is a significant space and cost saving in multi-node RS-485 systems where each node needs its own isolation.
How does the ±15kV ESD rating on the ADM2563E bus pins compare to standard RS-485 transceiver ESD protection?
Standard RS-485 transceivers typically provide ±8kV or ±15kV HBM ESD protection, while the ADM2563E offers ±15kV protection specifically to the IEC 61000-4-2 contact discharge standard, which is a more demanding test than HBM because it uses a lower source impedance (330Ω versus 1500Ω in HBM). This IEC rating means the bus pins can survive direct electrostatic discharge events during hot-plug connector insertion in field installations without requiring additional external TVS diodes on the RS-485 A and B lines.
What is the maximum data rate supported by the ADM2563E and how many devices can share one RS-485 bus segment?
The ADM2563E supports RS-485 data rates up to 500kbps, which covers the majority of industrial protocols including Modbus RTU, PROFIBUS DP at lower speeds, and proprietary sensor networks. Each ADM2563E presents 1 unit load to the RS-485 bus, and the RS-485 standard allows up to 32 unit loads per segment, meaning up to 32 ADM2563E nodes — or a mix of ADM2563E and lower-unit-load devices totaling 32 — can share a single RS-485 bus segment without line driver overloading.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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