Overview
The ADM485ARMZ-REEL, produced by 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 a variety of applications requiring reliable and fast data transmission. The device operates from a single 5 V power supply and is fabricated using BiCMOS technology, combining the benefits of low power CMOS with the fast switching capabilities of bipolar technology.
Key Specifications
| Specification | Value |
|---|---|
| Data Rate | 5 Mbps |
| Supply Voltage | 5 V |
| Bus Common-Mode Range | -7 V to +12 V |
| Driver Propagation Delay | 10 ns (typical) |
| Receiver Propagation Delay | 15 ns (typical) |
| Operating Temperature Range | -40°C to 85°C |
| Thermal Shutdown Temperature | 150°C (disable), 140°C (re-enable) |
| ESD Protection | Yes |
| Number of Transceivers on Bus | Up to 32 |
Key Features
- Meets EIA RS-485 and RS-422 standards
- High speed, low power BiCMOS technology
- Thermal shutdown protection and short-circuit protection
- High-Z outputs when power is off or driver is disabled
- Fail-safe receiver output (logic high if inputs are unconnected)
- High source and sink current capability for driver outputs
- ESD protection for all inputs and outputs
Applications
- Low power RS-485 systems
- DTE/DCE interfaces
- Packet switching
- Local area networks (LANs)
- Data concentration and data multiplexers
- Integrated services digital network (ISDN)
Q & A
- What is the data rate of the ADM485ARMZ-REEL?
The data rate of the ADM485ARMZ-REEL is 5 Mbps. - What is the operating supply voltage for the ADM485ARMZ-REEL?
The ADM485ARMZ-REEL operates from a single 5 V power supply. - What is the bus common-mode range for the ADM485ARMZ-REEL?
The bus common-mode range is -7 V to +12 V. - What is the driver propagation delay of the ADM485ARMZ-REEL?
The driver propagation delay is typically 10 ns. - How many transceivers can be connected on a bus simultaneously?
Up to 32 transceivers can be connected on a bus simultaneously. - What is the thermal shutdown temperature for the ADM485ARMZ-REEL?
The thermal shutdown temperature is 150°C (disable) and 140°C (re-enable). - Does the ADM485ARMZ-REEL have ESD protection?
Yes, the ADM485ARMZ-REEL has ESD protection for all inputs and outputs. - What is the fail-safe state of the receiver output if the inputs are unconnected?
The receiver output goes to a logic high state if the inputs are unconnected. - What technology is used in the fabrication of the ADM485ARMZ-REEL?
The ADM485ARMZ-REEL is fabricated using BiCMOS technology. - What are some typical applications of the ADM485ARMZ-REEL?
Typical applications include low power RS-485 systems, DTE/DCE interfaces, packet switching, local area networks (LANs), data concentration, data multiplexers, and integrated services digital network (ISDN).
