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
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Data Sheets
Application Notes
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| ADM3078EARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 1.7 | 1.55 | Y |
| ADM3078EARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 1.55 | Y |
| ADM3078EYRZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 1.87 | 1.7 | Y |
| ADM3078EYRZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 1.7 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
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| EVAL-RS485HDEBZ | Standard Half-Duplex RS-485 Evaluation Board | 30 | Y |
Reference Materials
