Overview
The ADM485ARZ from Analog Devices Inc. is a differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines. It complies with EIA standards RS-485 and RS-422, making it suitable for balanced data transmission. The device operates from a single 5 V power supply and features a thermal shutdown circuit to prevent excessive power dissipation during fault conditions. The ADM485ARZ is fabricated using BiCMOS technology, combining low power CMOS with fast switching bipolar technology, which ensures fast switching speeds and low power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package | 8-SOIC (0.154, 3.90mm Width) |
| Number of Pins | 8 |
| Interface | RS-485, RS-422 |
| Driver Number of Bits | 1 |
| Receiver Number of Bits | 1 |
| Data Rate | 5 Mbps |
| Receiver Hysteresis | 70 mV |
| Supply Voltage | 5 V |
| Operating Temperature Range | -40°C to 85°C |
| Bus Common-Mode Range | -7 V to +12 V |
| Driver Propagation Delay | 10 ns typical |
| Receiver Propagation Delay | 15 ns typical |
Key Features
- Meets EIA RS-485 and RS-422 standards
- Single 5 V power supply
- High speed data rate of up to 5 Mbps
- Thermal shutdown protection and short-circuit protection
- High-Z outputs when powered off
- Fail-safe feature in the receiver for unconnected inputs
- BiCMOS technology for low power and fast switching speeds
- ESD protection on all inputs and outputs
- Supports up to 32 transceivers on a bus
Applications
- Low power RS-485 systems
- DTE/DCE interface
- Packet switching
- Local area networks (LANs)
- Data concentration and data multiplexers
- Integrated services digital network (ISDN)
Q & A
- What is the primary function of the ADM485ARZ?
The ADM485ARZ is a differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines, complying with EIA standards RS-485 and RS-422.
- What is the data rate of the ADM485ARZ?
The ADM485ARZ supports a data rate of up to 5 Mbps.
- What type of power supply does the ADM485ARZ require?
The ADM485ARZ operates from a single 5 V power supply.
- What is the operating temperature range of the ADM485ARZ?
The operating temperature range is -40°C to 85°C.
- Does the ADM485ARZ have thermal shutdown protection?
- How many transceivers can be connected on a bus using the ADM485ARZ?
Up to 32 transceivers can be connected simultaneously on a bus.
- What is the receiver hysteresis of the ADM485ARZ?
The receiver hysteresis is 70 mV.
- Does the ADM485ARZ have ESD protection?
- What is the package type of the ADM485ARZ?
The ADM485ARZ is packaged in an 8-SOIC (0.154, 3.90mm Width).
- What are some common applications of the ADM485ARZ?
Common applications include low power RS-485 systems, DTE/DCE interface, packet switching, local area networks (LANs), data concentration, data multiplexers, and integrated services digital network (ISDN).
