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ADM3488E:  3.3 V, ±15 kV ESD-Protected, 250kbps Full-Duplex Transceiver

The ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E are 3.3 V, low power data transceivers with ±15 kV ESD protection suitable for full- and half-duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission, and they comply with TIA/EIA standards RS485 and RS-422. The ADM3483E/ADM3486E are half-duplex transceivers that share differential lines and have ...More

ADM3488E:  3.3 V, ±15 kV ESD-Protected, 250kbps Full-Duplex Transceiver

Product Description

The ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E are 3.3 V, low power data transceivers with ±15 kV ESD protection suitable for full- and half-duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission, and they comply with TIA/EIA standards RS485 and RS-422. The ADM3483E/ADM3486E are half-duplex transceivers that share differential lines and have separate enable inputs for the driver and receiver. The full-duplex ADM3488E/ADM3490E/ADM3491E transceivers have dedicated differential line driver outputs and receiver inputs. The ADM3491E also features separate enable inputs for the driver and receiver.

The devices have a 12 kΩ receiver input impedance, which allows up to 32 transceivers on a bus. Because only one driver should be enabled at any time, the output of a disabled or powered-down driver is tristated to avoid overloading the bus.

The driver outputs of the ADM3483E/ADM3486E/ADM3488E are slew rate limited, in order to reduce EMI and data errors caused by reflections from improperly terminated buses. The receiver has a fail-safe feature that ensures a logic high output when the inputs are floating. Excessive power dissipation caused by bus contention or by output shorting is prevented with a thermal shutdown circuit. The parts are fully specified over the industrial temperature range and are available in 8-lead and 14-lead narrow SOIC packages.

Applications

  • Power/energy metering
  • Telecommunications
  • EMI-sensitive systems
  • Industrial control
  • Local area networks

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    TECHNICAL DOCUMENTATION

    • TIA/EIA RS-485/RS-422 compliant
    • ±15 kV ESD protection on RS-485 input/output pins
    • Data rates: ADM3483E/ADM3488E: 250 kbps
    • Half- and full-duplex options
    • Up to 32 nodes on the bus
    • Receiver open-circuit, fail-safe design
    • Outputs high-Z when disabled or powered off
    • Common-mode input range: −7 V to +12 V
    • Thermal shutdown and short-circuit protection
    • Industry-standard 75176 pinout
    • 8-lead and 14-lead narrow SOIC packages
    • ESD-Protection: 15 kV
    • Pwr Supply (Vnom): +3.3
    • Data Rate: 250kbps
    • Full-Half Duplex: Full
    • # of Nodes On Bus: 32
    • Drvr/Rcvr Enable: No
    • Fail Safe: Open
    • Isolation V (rms): ---
    • Available Packages: SOIC

    Functional Block Diagram for ADM3488E

    Similar Products

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    Part# Min Pos Supply Pwr Supply (Vnom) Full-Half Duplex ESD-Protection Data Rate # of Nodes On Bus Drvr/Rcvr Enable Fail Safe Isolation V (rms) Available Packages Price* (1000-4999) Protocols
    ADM2482E +3 +3 to +5 & ISO +3 Full, Half 15 kV 16Mbps 256 Yes Open, Short 2.5 kV SOIC $4.66 RS-422, RS-485
    ADM2484E +3 +3 to +5 & ISO +3 Full, Half 15 kV 500kbps 256 Yes Open, Short 5 kV SOIC $3.04 RS-422, RS-485
    ADM2487E +3 +3 to +5 & ISO +3 Full, Half 15 kV 500kbps 256 Yes Open, Short 2.5 kV SOIC $3.64 RS-422, RS-485
    ADM2491E +3 +3 to +5 & ISO +5 Full, Half 8 kV 16Mbps 32 Yes Open 5 kV SOIC $4.76 RS-422, RS-485
    ADM2582E +3 3.3, 5 Full, Half 15 kV 16Mbps 256 Yes Open, Short 2.5 kV SOIC $6.50 RS-422, RS-485
    ADM2587E +3 3.3, 5 Full, Half 15 kV 500kbps 256 Yes Open, Short 2.5 kV SOIC $5.50 RS-422, RS-485
    ADN4668 +3 3.3 --- 15 kV 400Mbps - Yes - - SOIC, SOP $1.16 EIA-644, LVDS
    ADM2490E +2.7 +3 to +5 & ISO +5 Full 8 kV 16Mbps 32 No Open 5 kV SOIC $4.55 RS-422, RS-485
    ADM2483 +2.7 +3 to +5 & ISO +5 Half --- 500kbps 256 Yes Open, Short 2.5 kV SOIC $3.04 RS-485
    ADM2485 +2.7 +3 to +5 & ISO +5 Half --- 16Mbps 50 Yes Open 2.5 kV SOIC $5.57 RS-422, RS-485
    ADM2486 +2.7 +3 to +5 & ISO +5 Half --- 20Mbps 50 Yes Open 2.5 kV SOIC $5.04 RS-485
    ADM3070E +3 3.3 Full 15 kV 250kbps 256 Yes Open, Short --- SOIC $1.62 RS-422, RS-485
    ADM3071E +3 3.3 Full 15 kV 250kbps 256 No Open, Short --- SOIC $1.57 RS-422, RS-485
    ADM3488E +3 3.3 Full 15 kV 250kbps 32 No Open --- SOIC $1.32 RS-422, RS-485
    ADM3488 +3 3.3 Full --- 250kbps 32 No Open --- SOIC $0.91 RS-422, RS-485
    ADM3074E +3 3.3 Full 15 kV 500kbps 256 No Open, Short --- SOIC $1.52 RS-422, RS-485
    ADM3490 +3 3.3 Full --- 10Mbps 32 No Open --- SOIC $1.01 RS-422, RS-485
    ADM3491 +3 3.3 Full --- 10Mbps 32 Yes Open --- DIP, SOIC, SOP $1.37 RS-422, RS-485
    ADM3490E +3 3.3 Full 15 kV 12Mbps 32 No Open --- SOIC $1.37 RS-422, RS-485
    ADM3491E +3 3.3 Full 15 kV 12Mbps 32 Yes Open --- SOIC $1.42 RS-422, RS-485
    ADM3076E +3 3.3 Full 15 kV 16Mbps 256 Yes Open, Short --- SOIC $1.62 RS-422, RS-485
    ADM3077E +3 3.3 Full 15 kV 16Mbps 256 No Open, Short --- SOIC $1.57 RS-422, RS-485
    ADM3072E +3 3.3 Half 15 kV 250kbps 256 Yes Open, Short --- SOIC $1.52 RS-422, RS-485
    ADM3483E +3 3.3 Half 15 kV 250kbps 32 Yes Open --- SOIC $1.32 RS-422, RS-485
    ADM3493 +3 3.3 Half --- 250kbps 256 Yes Open --- SOIC $0.96 RS-422, RS-485
    ADM3483 +3 3.3 Half --- 250kbps 32 Yes Open --- SOIC $0.91 RS-422, RS-485
    ADM3073E +3 3.3 Half 15 kV 500kbps 256 Yes Open, Short --- SOIC $1.62 RS-422, RS-485
    ADM3075E +3 3.3 Half 15 kV 500kbps 256 Yes Open, Short --- SOIC $1.52 RS-422, RS-485
    ADM3486E +3 3.3 Half 15 kV 2.5Mbps 32 Yes Open --- SOIC $1.32 RS-422, RS-485
    ADM3485 +3 3.3 Half --- 10Mbps 32 Yes Open --- SOIC $1.01 RS-422, RS-485
    ADM3485E +3 3.3 Half 15 kV 12Mbps 50 Yes Open --- DIP, SOIC $1.32 RS-422, RS-485
    ADM3078E +3 3.3 Half 15 kV 16Mbps 256 Yes Open, Short --- SOIC $1.55 RS-422, RS-485
    ADM488 +4.5 5 Full --- 250kbps 32 No Open --- DIP, SOIC $1.11 RS-422, RS-485
    ADM489 +4.5 5 Full --- 250kbps 32 Yes Open --- DIP, SOIC, SOP $1.62 RS-422, RS-485
    ADM483E +4.5 5 Half 15 kV 250kbps 32 Yes Open --- DIP, SOIC $1.27 RS-422, RS-485
    ADM4854 +4.75 5 Full --- 115kbps 256 No Open, Short --- SOIC $0.71 RS-422, RS-485
    ADM4855 +4.75 5 Full --- 500kbps 256 No Open, Short --- SOIC $0.71 RS-422, RS-485
    ADM4856 +4.75 5 Full --- 2.5Mbps 256 No Open, Short --- SOIC $0.71 RS-422, RS-485
    ADM4857 +4.75 5 Full --- 10Mbps 256 No Open, Short --- SOIC $0.71 RS-422, RS-485
    ADM4850 +4.75 5 Half --- 115kbps 256 Yes Open, Short --- CSP, MSOP, SOIC $0.71 RS-422, RS-485
    ADM487E +4.75 5 Half 15 kV 250kbps 128 Yes Open --- SOIC $1.32 RS-422, RS-485
    ADM483 +4.75 5 Half --- 250kbps 32 Yes Open --- SOIC $0.67 RS-422, RS-485
    ADM4851 +4.75 5 Half --- 500kbps 256 Yes Open, Short --- CSP, SOIC $0.71 RS-422, RS-485
    ADM1487E +4.75 5 Half 15 kV 2.5Mbps 128 Yes Open --- SOIC $1.32 RS-422, RS-485
    ADM485E +4.75 5 Half 15 kV 2.5Mbps 32 Yes Open --- SOIC $1.32 RS-422, RS-485
    ADM4852 +4.75 5 Half --- 2.5Mbps 256 Yes Open, Short --- CSP, SOIC $0.71 RS-422, RS-485
    ADM485 +4.75 5 Half --- 5Mbps 32 Yes Open --- DIP, SOIC, SOP $1.31 RS-422, RS-485
    ADM4853 +4.75 5 Half --- 10Mbps 256 Yes Open, Short --- CSP, SOIC $0.71 RS-422, RS-485
    ADM1486 +4.75 5 Half --- 30Mbps 50 Yes Open --- SOIC $2.07 RS-422, RS-485
    ADM1485 +4.75 5 Half --- 30Mbps 32 Yes Open --- DIP, SOIC, SOP $1.63 RS-422, RS-485
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    Table Default Sort is Power Supply (Ascending) then Full/Half Duplex Ascending


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