Overview
The ADM489ABRZ-REEL7, produced by Analog Devices Inc., is a low-power, full-duplex RS-485/RS-422 differential line transceiver. This component is designed for communication on multipoint bus transmission lines and is suitable for full-duplex data transfer. It operates from a single 5 V ± 10% power supply and is highly reliable for industrial temperature ranges, making it ideal for various industrial and networking applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Operating Temperature | -40°C to 85°C | °C | |
| Supply Voltage | 4.5 V to 5.5 V | V | |
| Data Rate | Up to 250 kbps | kbps | |
| Input Impedance | 12 kΩ | kΩ | Differential bus |
| Receiver Hysteresis | 70 mV | mV | Noise suppression |
| Package Type | 14-SOIC | Surface mount | |
| Number of Drivers/Receivers | 1/1 | Full-duplex operation | |
| Power Supply Current | 30 to 60 μA (outputs unloaded, receivers enabled) | μA | |
| Propagation Delay | 250 to 2000 ns | ns | Input to output, RL differential = 54 Ω, CL1 = CL2 = 100 pF |
Key Features
- Full-duplex operation with a single differential line driver and a single differential line receiver.
- Operates from a single 5 V ± 10% power supply.
- Low power consumption with a power supply current of 30 to 60 μA.
- Integrated receiver hysteresis for noise suppression (70 mV).
- Thermal shutdown circuit to prevent excessive power dissipation during fault conditions.
- Fail-safe feature in the receiver to ensure logical output during fault conditions.
- Immune to high RF field strengths without special shielding precautions.
- Compliant with EIA RS-485 and RS-422 standards.
- Surface mount 14-SOIC package.
Applications
- Industrial control systems.
- Networking equipment.
- Data acquisition systems.
- Multipoint bus transmission lines.
- Electrically harsh environments where cables can be plugged/unplugged.
Q & A
- What is the operating temperature range of the ADM489ABRZ-REEL7?
The operating temperature range is -40°C to 85°C. - What is the supply voltage range for this component?
The supply voltage range is 4.5 V to 5.5 V. - What is the maximum data rate supported by the ADM489ABRZ-REEL7?
The maximum data rate is up to 250 kbps. - How many transceivers can be connected on the differential bus?
Up to 32 transceivers can be connected on the differential bus. - What is the receiver hysteresis value for noise suppression?
The receiver hysteresis value is 70 mV. - What type of package does the ADM489ABRZ-REEL7 use?
The package type is 14-SOIC, surface mount. - Is the ADM489ABRZ-REEL7 compliant with industry standards?
Yes, it is compliant with EIA RS-485 and RS-422 standards. - What is the purpose of the thermal shutdown circuit in the ADM489ABRZ-REEL7?
The thermal shutdown circuit prevents excessive power dissipation during fault conditions by forcing the driver output into a high impedance state. - Is the ADM489ABRZ-REEL7 suitable for electrically harsh environments?
Yes, it is suitable for electrically harsh environments and can operate where cables can be plugged/unplugged. - What is the power supply current for the ADM489ABRZ-REEL7 when outputs are unloaded and receivers are enabled?
The power supply current is 30 to 60 μA.
