ADM3078E 3.3 V, ⅛ Load, ±15kV ESD Protected, RS-485/RS-422 Transceiver (Half Duplex, 16 Mbps, DE/RE)

The ADM307xE 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: RS-485 and RS-422. Applications

The devices have a ⅛ unit load receiver input impedance, which allows up to 256 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 receiver inputs have a true fail-safe feature, which eliminates the need for external bias resistors and ensures a logic high output level when the inputs are open or shorted. This guarantees that the receiver outputs are in a known state before communication begins and when communication ceases.

Features and Benefits
  • TIA/EIA RS-485/RS-422 compliant
  • ±15 kV ESD protection on RS-485 input/output pins
  • Data rates ADM3076E/ADM3077E/ADM3078E: 16Mpbs
  • Half- and full-duplex options
  • True fail-safe receiver inputs
  • Up to 256 nodes on the bus
  • −40°C to +125°C temperature option
  • Hot-swap input structure on DE and RE pins
  • Reduced slew rates for low EMI
  • Low power shutdown current (all except ADM3071E/ ADM3074E/ADM3077E)
  • Outputs high-Z when disabled or powered off
  • See data sheet for addional features
Interface & Isolation
Data Sheets
Documentnote
ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E: 3.3 V, ±15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev. E)PDF 522 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
ADM3078EARZ Production8 ld SOICOTH 98-40 to 85C1.71.55Y
ADM3078EARZ-REEL7 Production8 ld SOICREEL 1000-40 to 85C01.55Y
ADM3078EYRZ Production8 ld SOICOTH 98-40 to 125C1.871.7Y
ADM3078EYRZ-REEL7 Production8 ld SOICREEL 1000-40 to 125C01.7Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-RS485HDEBZStandard Half-Duplex RS-485 Evaluation Board30Y
Reference Materials
ADM3070E/ADM3071E/ADM3072E/ADM3073E/ADM3074E/ADM3075E/ADM3076E/ADM3077E/ADM3078E: 3.3 V, ±15 kV ESD-Protected, Half- and Full-Duplex, RS-485/RS-422 Transceivers Data Sheet (Rev. E) adm3070e
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