Overview
The ADM3491AR-1REEL7 is a robust and efficient RS422/RS485 transceiver designed and manufactured by Analog Devices Inc. This component is optimized for low-power consumption and high-speed data transmission, making it ideal for various industrial and communication applications. It operates on a single 3.3V power supply and is compliant with both EIA RS-422 and RS-485 standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Drivers/Receivers | 1/1 | |
| Duplex | Full | |
| Data Rate | 20 Mbps | |
| Receiver Hysteresis | 50 mV | |
| Voltage - Supply | 3.3 V ± 0.3 V | |
| Operating Temperature | -40°C to 85°C | |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | |
| Input Impedance | 19 kΩ | |
| Supply Current | 840 μA | |
| Shutdown Current | 2 nA |
Key Features
- Operates with a single 3.3V power supply, making it suitable for low-voltage applications.
- Compliant with EIA RS-422 and RS-485 standards over the full common-mode range.
- Full-duplex communication capability with a data rate of up to 20 Mbps.
- High input impedance (19 kΩ) allowing up to 50 transceivers on the bus.
- Short-circuit protection and thermal shutdown to prevent excessive power dissipation.
- Interoperable with 5V logic and meets IEC1000-4-4 (>1 kV) standards.
- Low power consumption with a shutdown mode, ideal for power-sensitive applications.
- Available in PDIP, SOIC, and TSSOP packages.
Applications
- Telecommunications: DTE–DCE interfaces, packet switching, and local area networks.
- Data concentration and data multiplexers.
- Integrated services digital network (ISDN) and AppleTalk.
- Industrial controls and automation systems.
Q & A
- What is the operating voltage of the ADM3491AR-1REEL7?
The ADM3491AR-1REEL7 operates on a single 3.3V power supply.
- What are the supported communication protocols?
The component is compliant with both EIA RS-422 and RS-485 protocols.
- What is the maximum data rate of the ADM3491AR-1REEL7?
The maximum data rate is up to 20 Mbps.
- What is the input impedance of the receiver?
The input impedance is 19 kΩ.
- How many transceivers can be connected on the bus?
Up to 50 transceivers can be connected on the bus.
- What is the operating temperature range of the component?
The operating temperature range is -40°C to 85°C.
- Does the component have short-circuit protection?
Yes, it has short-circuit protection and thermal shutdown features.
- Is the component interoperable with 5V logic?
Yes, it is interoperable with 5V logic.
- What are the available package types for the ADM3491AR-1REEL7?
The component is available in PDIP, SOIC, and TSSOP packages.
- What is the supply current and shutdown current of the component?
The supply current is 840 μA, and the shutdown current is 2 nA.
