Overview
The ADM489ABRZ is a low-power, differential line transceiver produced by Analog Devices Inc. It is designed for communication on multipoint bus transmission lines and complies with both EIA RS-485 and RS-422 standards. This transceiver is suitable for balanced data transmission and supports full-duplex data transfer. The ADM489ABRZ operates from a single 5 V ± 10% power supply and is ruggedized to handle electrically harsh environments and high RF field strengths without special shielding precautions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply | 5 V ± 10% | V |
| Supply Current | 30 μA | A |
| Bus Common-Mode Range | -7 V to +12 V | V |
| Input Impedance | 12 kΩ | Ω |
| Maximum Number of Transceivers on Bus | 32 | - |
| Data Rate | Up to 250 kbps | bps |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 14-Lead Standard Small Outline Package, Narrow Body (SOIC_N) | - |
Key Features
- Compliance with EIA RS-485 and RS-422 standards
- Low power consumption with a supply current of 30 μA
- Short-circuit protection and thermal shutdown circuitry
- Fail-safe receiver feature ensuring a logic high output state if inputs are unconnected
- Reduced slew rate for low electromagnetic interference (EMI)
- Ability to operate in electrically harsh environments and high RF field strengths
- Driver and receiver enable controls (additional in ADM489A)
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)
Q & A
- What are the primary standards that the ADM489ABRZ complies with?
The ADM489ABRZ complies with both EIA RS-485 and RS-422 standards.
- What is the operating voltage range for the ADM489ABRZ?
The ADM489ABRZ operates from a single 5 V ± 10% power supply.
- What is the maximum number of transceivers that can be connected on the bus?
Up to 32 transceivers can be connected on the bus.
- What is the maximum data rate supported by the ADM489ABRZ?
The ADM489ABRZ supports data rates up to 250 kbps.
- What kind of protection does the ADM489ABRZ offer against electrical faults?
The ADM489ABRZ offers short-circuit protection and thermal shutdown circuitry.
- What is the fail-safe feature of the receiver in the ADM489ABRZ?
The receiver has a fail-safe feature that results in a logic high output state if the inputs are unconnected (floating).
- What is the typical supply current of the ADM489ABRZ?
The typical supply current is 30 μA.
- What is the operating temperature range of the ADM489ABRZ?
The operating temperature range is -40°C to +85°C.
- What type of package does the ADM489ABRZ come in?
The ADM489ABRZ comes in a 14-Lead Standard Small Outline Package, Narrow Body (SOIC_N).
- Is the ADM489ABRZ suitable for use in harsh electrical environments?
Yes, the ADM489ABRZ is ruggedized to handle electrically harsh environments and high RF field strengths without special shielding precautions.
