ADM3483 3.3 V, Low Power, RS-485/RS-422 Transceiver (Half Duplex, 250 kbps, Slew Rate Limited, DE/RE)
The ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 are low power, differential line transceivers designed to operate using a single 3.3 V power supply. Low power consumption, coupled with a shutdown mode, makes the ADM3483/ADM3485/ADM3488/ ADM3490/ADM3491 ideal for power-sensitive applications.
Applications
The ADM3488/ADM3490/ADM3491 feature full-duplex com-munication, while the ADM3483/ADM3485 are designed for half-duplex communication.
The ADM3483/ADM3488 feature slew rate limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250 kbps.
The ADM3485/ADM3490/ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 trans-ceivers to be connected on the bus. A thermal shutdown circuit prevents excessive power dissipation caused by bus contention or by output shorting. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, then the thermal shutdown circuit forces the driver output into a high impedance state. If the inputs are unconnected (floating), the receiver contains a fail-safe feature that results in a logic high output state. The parts are fully specified over the commercial and industrial temperature ranges. The ADM3483/ADM3485/ ADM3488/ADM3490 are available in 8-lead SOIC_N; the ADM3491 is available in a 14-lead SOIC_N.
Features and Benefits- Operate with 3.3 V supply
- Interoperable with 5 V logic
- EIA RS-485/RS-422 Compliant over Full Common-mode Range
- Data Rate Options:250kbps
- Half and Full Duplex Options
- Reduced Slew Rates for Low EMI
- 2nA Supply Current in Shutdown Mode
- Up to 32 Transceivers on a Bus
- -7V to +12V Bus Common Mode Range
- Specified over –40°C to +85°C Temperature Range
- Available in 8-Lead SOIC
| Reference Designs |
Data Sheets
Application Notes
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADM3483ARZ Production | 8 ld SOIC | OTH 98 | -40 to 85C | 1.01 | 0.91 | Y |
| ADM3483ARZ-REEL7 Production | 8 ld SOIC | REEL 1000 | -40 to 85C | 0 | 0.91 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-RS485HDEBZ | Standard Half-Duplex RS-485 Evaluation Board | 30 | Y |
Reference Materials
