ADM3483E 3.3 V, ±15 kV ESD-Protected, RS-485/RS-422 Transceiver (Half Duplex, 250kbps, DE/RE)

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

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

Features and Benefits
  • TIA/EIA RS-485/RS-422 compliant
  • ±15 kV ESD protection on RS-485 input/output pins
  • Data rates: ADM3483E/ADM3488E: 250 kbps
  • Half duplex options
  • Up to 32 nodes on the bus
  • Receiver open-circuit, fail-safe design
  • Low power shutdown current
  • 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 SOIC package
Interface & Isolation
Data Sheets
Documentnote
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E: 3.3 V, ±15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev. A)PDF 643 kB
Application Notes
Documentnote
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0)PDF 671 kB
AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0)PDF 245 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADM3483EARZ Production8 ld SOICOTH 98-40 to 85C1.451.32Y
ADM3483EARZ-REEL7 Production8 ld SOICREEL 1000-40 to 85C01.32Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-RS485HDEBZStandard Half-Duplex RS-485 Evaluation Board30Y
Reference Materials
ADM3483E/ADM3486E/ADM3488E/ADM3490E/ADM3491E: 3.3 V, ±15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev. A) adm3483e
AN-1176:二进制.Bxl文件格式的元件尺寸和符号 (Rev. 0) adn4670
AN-1176: Component Footprints and Symbols in the Binary .Bxl File Format (Rev. 0) adn4670
AN-960: RS-485/RS-422电路实施指南 (Rev. 0) adm2486
AN-960: RS-485/RS-422 Circuit Implementation Guide (Rev. 0) adm2486
Emerging Energy Applications Solutions Bulletin, Volume 10, Issue 4 ad7656
Test & Instrumentation Solutions Bulletin, Volume 10, Issue 3 ad7780