ADM3485 Series
3.3 V, Low Power, RS-485/RS-422 Transceiver (Half Duplex, 10 Mbps, Driver/Receiver Enable)
Manufacturer: Analog Devices
Catalog
3.3 V, Low Power, RS-485/RS-422 Transceiver (Half Duplex, 10 Mbps, Driver/Receiver Enable)
Key Features
• Operate with 3.3 V supply
• Interoperable with 5 V logic
• EIA RS-485/RS-422 Compliant over Full Common-Range
• Data Rate Options: 10 Mbps
• Half and Full Duplex Options
• 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
• 8 ns skew
• Available in 8-Lead SOIC
Description
AI
TheADM3483/ ADM3485 /ADM3488/ADM3490/ADM3491are 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.The ADM3488 / ADM3490 / ADM3491 feature full-duplex communication, while the ADM3483 / ADM3485 are designed for half-duplex communication.The ADM3485 / ADM3490 / ADM3491 transmit at up to 10 Mbps. The receiver input impedance is 12 kΩ, allowing up to 32 transceivers 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.APPLICATIONSLow-Power RS-485 ApplicationsTelecomIndustrial Process ControlHVAC
