GENERAL DESCRIPTION
The ADM2485 differential bus transceiver is an integrated, galvanically isolated component designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced transmission lines and complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482:1987(E).

FEATURES
    Half-duplex isolated RS-485 transceiver
    Integrated oscillator driver for external transformer
    PROFIBUS compliant
    Complies with ANSI TIA/EIA RS-485-A-1998 and ISO 8482:1987(E)
    16 Mbps data rate
    5 V or 3 V operation (VDD1)
    50 nodes on bus
    Receiver open-circuit, fail-safe design
    High common-mode transient immunity: >25 kV/μs
    Isolated DE OUT status output
    Thermal shutdown protection
    Safety and regulatory approvals (pending):
        UL recognition—2500 VRMS for 1 minute per UL 1577
        CSA component acceptance notice #5A
        VDE certificate of conformity
        DIN EN 60747-5-2 (VDE 0884 Part 2): 2003-01
        DIN EN 60950 (VDE 0805):2001-12; EN 60950: 2000 VIORM = 560 V peak
    Operating temperature range: -40° to 85°C
    Wide body 16-lead SOIC package
   
APPLICATIONS
    Isolated RS-485/RS-422 interfaces
    PROFIBUS networks
    Industrial field networks
    Multipoint data transmission systems