Overview
The ADM1485ARMZ is a high-speed, low-power RS-485 transceiver designed by Analog Devices Inc. This component is suitable for high-speed bidirectional data communication on multipoint bus transmission lines and complies with both RS-485 and RS-422 EIA standards. It operates from a single 5 V power supply and features a differential line driver and receiver, both of which can be enabled independently.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Differential Output Voltage (VOD) | 1.5 | - | 5.0 | V | R = 27 Ω (RS-485), VCC = 5 V |
| Supply Voltage | - | - | 5 | V | |
| Data Rate | - | - | 30 Mbps | ||
| Driver Propagation Delay | - | 10 | - | ns | |
| Receiver Propagation Delay | - | 15 | - | ns | |
| Common-Mode Range | -7 | - | +12 | V | |
| Package Type | - | - | 8-TSSOP, 8-MSOP | ||
| Number of Pins | - | - | 8 |
Key Features
- Meets EIA RS-485 and RS-422 standards.
- High-speed data rate of up to 30 Mbps.
- Single 5 V power supply.
- High-Z outputs when power is off.
- Thermal shutdown protection and short-circuit protection.
- Low skew to minimize EMI interference.
- Receiver open-circuit fail-safe feature.
Applications
- Low power RS-485 systems.
- DTE-DCE interface.
- Packet switching and local area networks.
- Data concentration and data multiplexers.
- Integrated Services Digital Network (ISDN).
Q & A
- What is the data rate of the ADM1485ARMZ?
The data rate of the ADM1485ARMZ is up to 30 Mbps. - What power supply does the ADM1485ARMZ use?
The ADM1485ARMZ operates from a single 5 V power supply. - Does the ADM1485ARMZ comply with RS-485 and RS-422 standards?
Yes, the ADM1485ARMZ complies with both RS-485 and RS-422 EIA standards. - What is the propagation delay of the driver and receiver?
The driver propagation delay is 10 ns, and the receiver propagation delay is 15 ns. - What is the common-mode range of the ADM1485ARMZ?
The common-mode range is from -7 V to +12 V. - Does the ADM1485ARMZ have thermal shutdown protection?
Yes, the ADM1485ARMZ features thermal shutdown protection to prevent excessive power dissipation during fault conditions. - What is the package type of the ADM1485ARMZ?
The package types are 8-TSSOP and 8-MSOP. - How many pins does the ADM1485ARMZ have?
The ADM1485ARMZ has 8 pins. - What is the receiver open-circuit fail-safe feature?
The receiver open-circuit fail-safe feature guarantees a logic high on the receiver when the inputs are open circuit or shorted to ground. - What are some typical applications of the ADM1485ARMZ?
Typical applications include low power RS-485 systems, DTE-DCE interface, packet switching, local area networks, data concentration, data multiplexers, and ISDN.
