ADM2484EBRWZ-REEL7 Isolators

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1. Describe

The ADM2484EBRWZ-REEL7 is an isolated data transceiver with ±15 kV ESD protection for high-speed, half-duplex, or full-duplex communication on multipoint transmission lines. For half-duplex operation, the transmitter output and receiver input share the same transmission line. Transmitter output pin Y is externally connected to receiver input pin A, and transmitter output pin Z is externally connected to receiver input pin B. Featuring Analog Devices, Inc.'s iCoupler® technology, this device combines a 3-channel isolator, 3-state differential line driver, and differential input receiver into a single package. The differential transmitter output and receiver input feature electrostatic discharge circuitry that provides protection up to ±15 kV using the human body model (HBM). The logic side of the device can be powered from a 5 V or 3.3 V supply, while the bus side requires an isolated 3.3 V supply. The device features current limiting and thermal shutdown to prevent output short circuits and bus contention from causing excessive power dissipation.

2. Feature

    1. Isolated RS-485/RS-422 transceiver, configurable as half-duplex or full-duplex

    2. ±15 kV ESD protection on RS-485 input/output pins

    3. 500 kbps data rate

    4. Suitable for 5 V or 3.3 V operation (VDD1)

    5. High common mode transient immunity: >25 kV/μs

    6. True fail-safe receiver input

    7. 256 nodes on the bus

    8. Thermal shutdown protection

    9. Operating temperature range: −40°C to +85°C

  10. Wide Body, 16-Pin SOIC Package

3. Application

    1. Isolated RS-485/RS-422 interface

    2. Industrial field network

    3. International bus

    4. Multi-point data transmission system