Overview
The ADM1485ARZ-REEL7 is a 5 V low power EIA RS-485 transceiver produced by Analog Devices Inc. This component is designed for high-speed bidirectional data communication on multipoint bus transmission lines, complying with both RS-485 and RS-422 EIA standards. It features a differential line driver and a differential line receiver, both of which can be enabled independently. The transceiver operates from a single 5 V power supply and includes thermal shutdown protection and short-circuit protection to prevent excessive power dissipation.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Differential Output Voltage, VOD | 2.0 | - | 5.0 | V | VCC = 5 V, R = 50 Ω (RS-422) |
| Differential Output Voltage, VOD | 1.5 | - | 5.0 | V | VCC = 5 V, R = 27 Ω (RS-485) |
| Common-Mode Output Voltage, VOC | - | - | 3 | V | R = 27 Ω or 50 Ω |
| Driver Propagation Delay | - | 10 | - | ns | - |
| Receiver Propagation Delay | - | 15 | - | ns | - |
| Operating Temperature Range | -40 | - | 85 | °C | - |
| Supply Voltage Range | 4.75 | - | 5.25 | V | - |
Key Features
- Meets EIA RS-485 and RS-422 standards
- 30 Mbps data rate
- Single 5 V power supply
- High speed, low power BiCMOS technology
- Thermal shutdown protection and short-circuit protection
- High-Z outputs with power off
- Independent enable for driver and receiver
- Proprietary ESD protection circuitry
Applications
- Low power RS-485 systems
- DTE-DCE interface
- Packet switching
- Local area networks
- Data concentration and data multiplexers
- Integrated Services Digital Network (ISDN)
Q & A
- What is the ADM1485ARZ-REEL7 used for?
The ADM1485ARZ-REEL7 is used for high-speed bidirectional data communication on multipoint bus transmission lines, complying with RS-485 and RS-422 standards.
- What is the operating voltage range of the ADM1485ARZ-REEL7?
The operating voltage range is 4.75 V to 5.25 V.
- What is the maximum data rate supported by the ADM1485ARZ-REEL7?
The maximum data rate supported is 30 Mbps.
- Does the ADM1485ARZ-REEL7 have thermal protection?
Yes, it includes thermal shutdown protection to prevent excessive power dissipation.
- Can the driver and receiver be enabled independently?
Yes, both the driver and receiver can be enabled independently.
- What is the operating temperature range of the ADM1485ARZ-REEL7?
The operating temperature range is -40°C to 85°C.
- Does the ADM1485ARZ-REEL7 have ESD protection?
Yes, it features proprietary ESD protection circuitry.
- What are some common applications of the ADM1485ARZ-REEL7?
Common applications include low power RS-485 systems, DTE-DCE interface, packet switching, local area networks, and ISDN.
- What type of technology is used in the ADM1485ARZ-REEL7?
The ADM1485ARZ-REEL7 uses high speed, low power BiCMOS technology.
- What is the package type of the ADM1485ARZ-REEL7?
The package type is NSOIC-8.
