Overview
The ADM3485EARZ-REEL from Analog Devices is a 3.3 V, low-power, half-duplex transceiver designed for RS-422 and RS-485 communication protocols. This device is optimized for multipoint bus transmission lines and features high-speed data transmission and robust ESD protection. It is packaged in an 8-pin SOIC N (Surface Mount) package, making it suitable for a variety of industrial and commercial applications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Data Rate | 12 Mbps | - | Maximum data rate |
| ESD Protection | ±15 kV | - | On RS-485 input/output pins |
| Supply Voltage | 3.3 V ± 0.3 V | V | - |
| Operating Temperature | -40°C to 85°C | °C | - |
| Package Type | SOIC N | - | Surface Mount, 8-pin |
| Number of Nodes | Up to 32 | - | On the bus |
| Driver Enable/Disable Time | 7-35 ns | ns | tPLH, tPHL |
| Receiver Output Enable/Disable Time | 7-35 ns | ns | tPLH, tPHL |
| Shutdown Current | 0.002-1 µA | µA | DE = 0 V, RE = VCC, DI = 0 V or VCC |
Key Features
- EIA/TIA-422 and EIA/TIA-485 compliant
- Half-duplex transceiver with separate enable inputs for the driver and receiver
- ±15 kV ESD protection on RS-485 input/output pins
- Receiver open-circuit, fail-safe design
- Low power consumption with a shutdown current of 0.002-1 µA
- Supports up to 32 nodes on the bus
Applications
The ADM3485EARZ-REEL is suitable for various applications requiring reliable and high-speed serial communication. These include:
- Industrial automation and control systems
- Commercial and industrial networking
- Point-of-sale terminals and other data acquisition systems
- Building automation and security systems
Q & A
- What is the maximum data rate of the ADM3485EARZ-REEL?
The maximum data rate is 12 Mbps. - What type of ESD protection does the ADM3485EARZ-REEL offer?
The device offers ±15 kV ESD protection on RS-485 input/output pins. - What is the operating supply voltage range for the ADM3485EARZ-REEL?
The operating supply voltage range is 3.3 V ± 0.3 V. - What is the operating temperature range for the ADM3485EARZ-REEL?
The operating temperature range is -40°C to 85°C. - How many nodes can be supported on the bus by the ADM3485EARZ-REEL?
The device can support up to 32 nodes on the bus. - What is the package type of the ADM3485EARZ-REEL?
The package type is SOIC N (Surface Mount), 8-pin. - Does the ADM3485EARZ-REEL have a shutdown mode?
Yes, the device enters a shutdown state when RE is high and DE is low. - What is the typical shutdown current of the ADM3485EARZ-REEL?
The typical shutdown current is 0.002-1 µA. - Is the ADM3485EARZ-REEL compliant with EIA/TIA standards?
Yes, it is compliant with EIA/TIA-422 and EIA/TIA-485 standards. - What is the receiver output enable/disable time for the ADM3485EARZ-REEL?
The receiver output enable/disable time is 7-35 ns.
