The ADM3070E–ADM3078E are 3.3V, low power data transceivers with ±15kV ESD protection suitable for full and half duplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with TIA/EIA standards RS-485 and RS-422. The devices have a 1/8 unit load receiver input impedance which allows up to 256 transceivers on a bus. Since only one driver should be enabled at any time, the output of a disabled or powered down driver is three-stated to avoid overloading the bus. Applications
The receiver inputs have a true failsafe 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.
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.
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
| Interface & Isolation |
| Document | note |
| 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 |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADM3072EARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 1.67 | 1.52 | Y |
| ADM3072EARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 1.52 | Y |
| ADM3072EYRZ Production | 8 ld SOIC | OTH 98 | -40 to 125C | 1.84 | 1.67 | Y |
| ADM3072EYRZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 125C | 0 | 1.67 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| EVAL-RS485HDEBZ | Standard Half-Duplex RS-485 Evaluation Board | 30 | Y |
