Overview
The LTM2881IY-3#PBF is a complete galvanically isolated full-duplex RS485/RS422 µModule (micromodule) transceiver produced by Analog Devices Inc. This device is designed to provide reliable and isolated communication, making it suitable for applications where ground-to-ground differentials are a concern. The LTM2881 integrates an onboard DC/DC converter, which supplies isolated 5V power to the output, eliminating the need for external components.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VCC Supply Voltage | LTM2881-3 | 3.0 | 3.3 | 3.6 | V |
| VCC Supply Voltage | LTM2881-5 | 4.5 | 5.0 | 5.5 | V |
| VCC2 Regulated Output Voltage (Loaded) | DE = 0V, RE = VL, ILOAD = 100mA (LTM2881-3), ILOAD = 150mA (LTM2881-5) | 4.75 | 5.0 | 5.0 | V |
| Supply Current in On Mode | DE = 0V, RE = VL, No Load | 20 | 25 | 30 | mA |
| Max Data Rate | 20 Mbps | ||||
| Operating Temperature Range | -40 | 85 | °C | ||
| Isolation Rating | 2500 Vrms |
Key Features
- Galvanic Isolation: Provides 2500 Vrms isolation, protecting against large ground-to-ground differentials.
- Integrated DC/DC Converter: Supplies isolated 5V power to the output, eliminating the need for external components.
- Adjustable Slew Rate: Allows for reduced EMI by adjusting the driver slew rate.
- Full-Duplex Operation: Supports both RS485 and RS422 protocols with one transmitter and one receiver.
- No External Components Required: The device is a complete µModule transceiver, requiring no additional external components.
Applications
- Industrial Automation: Suitable for use in industrial environments where isolation and reliability are critical.
- Automotive Systems: Can be used in automotive applications due to its robust isolation and temperature range.
- Medical Devices: Applicable in medical devices where isolation is essential for safety and compliance.
- Isolated Power Supply: Can be configured as a dedicated isolated power supply by disabling the RS485 transceiver.
Q & A
- What is the LTM2881IY-3#PBF?
The LTM2881IY-3#PBF is a galvanically isolated full-duplex RS485/RS422 µModule transceiver produced by Analog Devices Inc..
- What is the operating temperature range of the LTM2881IY-3#PBF?
The operating temperature range is -40°C to 85°C).
- What is the maximum data rate supported by the LTM2881IY-3#PBF?
The maximum data rate is 20 Mbps).
- Does the LTM2881IY-3#PBF require external components?
No, the device is a complete µModule transceiver and does not require any external components).
- What is the isolation rating of the LTM2881IY-3#PBF?
The isolation rating is 2500 Vrms).
- Can the LTM2881IY-3#PBF be used as an isolated power supply?
- What protocols are supported by the LTM2881IY-3#PBF?
The device supports RS485, RS422, and PROFIBUS protocols).
- What is the supply voltage range for the LTM2881IY-3#PBF?
The supply voltage range is 3V to 3.6V for the LTM2881-3 and 4.5V to 5.5V for the LTM2881-5).
- Is the LTM2881IY-3#PBF RoHS compliant?
- What is the package type of the LTM2881IY-3#PBF?
