Overview
The ADM489ARZ-REEL, produced by Analog Devices Inc., is a low-power, full-duplex differential line transceiver designed for communication on multipoint bus transmission lines. It complies with both EIA RS-485 and RS-422 standards, making it suitable for balanced data transmission. The device operates from a single 5 V ± 10% power supply and features a high level of robustness, including internal protection circuitry and thermal shutdown to prevent excessive power dissipation.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 5 V ± 10% |
| Data Rate | Up to 250 kbps |
| Bus Common-Mode Range | -7 V to +12 V |
| Input Impedance | 12 kΩ |
| Number of Transceivers on Bus | Up to 32 |
| Supply Current | 30 μA |
| Protection Features | 2 kV EFT protection, thermal shutdown, short-circuit protection |
| Package Type | 14-Lead Standard Small Outline Package (SOIC_N) |
| Operating Temperature Range | -40°C to +85°C |
| ROHS Compliance | Yes |
Key Features
- Compliance with EIA RS-485 and RS-422 standards
- Full-duplex operation with a single differential line driver and receiver
- Additional receiver and driver enable control on the ADM489
- Low electromagnetic emissions due to slew rate limited drivers
- High EM immunity and noise immunity
- Internal protection circuitry including thermal shutdown and short-circuit protection
- Fail-safe feature resulting in a logic high output state if inputs are unconnected
Applications
- Low power RS-485 and RS-422 systems
- DTE-DCE interface
- Packet switching
- Local area networks
- Data concentration and data multiplexers
- Integrated services digital network (ISDN)
- Multipoint connections in industrial and automotive environments
Q & A
- What are the primary standards that the ADM489ARZ-REEL complies with?
The ADM489ARZ-REEL complies with both EIA RS-485 and RS-422 standards. - What is the maximum data rate supported by the ADM489ARZ-REEL?
The device supports data rates up to 250 kbps. - What is the operating supply voltage range for the ADM489ARZ-REEL?
The device operates from a single 5 V ± 10% power supply. - How many transceivers can be connected on the bus?
Up to 32 transceivers can be connected on the differential bus. - What protection features does the ADM489ARZ-REEL include?
The device includes 2 kV EFT protection, thermal shutdown, and short-circuit protection. - What is the typical supply current of the ADM489ARZ-REEL?
The typical supply current is 30 μA. - Does the ADM489ARZ-REEL have any special shielding requirements for RF immunity?
No, it is immune to high RF field strengths without special shielding precautions. - What is the operating temperature range of the ADM489ARZ-REEL?
The operating temperature range is -40°C to +85°C. - Is the ADM489ARZ-REEL ROHS compliant?
Yes, the device is ROHS compliant. - What package type is the ADM489ARZ-REEL available in?
The device is available in a 14-Lead Standard Small Outline Package (SOIC_N).
