Overview
The LTC2871IUHF#PBF, produced by Analog Devices Inc., is a robust and versatile multiprotocol transceiver that supports RS232, RS485, and RS422 communication protocols. This device is designed to operate on a single supply voltage ranging from 3V to 5.5V, making it highly adaptable for various applications. The LTC2871 offers independent control of two RS232 transceivers and one RS485 transceiver, each on dedicated I/O lines, enhancing its functionality and flexibility.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Supply Voltage | 3V to 5.5V | |
| RS485 Data Rate | Up to 20Mbps | |
| RS232 Data Rate | Up to 500kbps | |
| ESD Protection | ±16kV | |
| Logic Interface Voltage | 1.7V to 5.5V | |
| Package Type | 38-Lead Plastic QFN (5mm × 7mm) | |
| Operating Temperature Range | –40°C to 85°C | |
| RS485 Nodes Supported | Up to 256 nodes |
Key Features
- Pin-configurable multiprotocol transceivers supporting RS232, RS485, and RS422 protocols.
- Integrated DC/DC boost converter for driving RS232 levels without multiple supplies.
- Automatic selection of integrated RS485 (120Ω) and RS232 (5kΩ) termination resistors.
- Half-/Full-Duplex RS485 switching.
- Logic Loopback mode for diagnostic self-test.
- RS485 receiver failsafe operation to eliminate UART lockup.
- High ESD protection: ±16kV.
- Supports up to 256 RS485 nodes.
Applications
- Industrial automation and control systems.
- Point-of-sale terminals and other commercial equipment.
- Medical devices requiring robust communication interfaces.
- Automotive systems needing reliable serial communication.
- Embedded systems and IoT devices requiring versatile serial communication capabilities.
Q & A
- What communication protocols does the LTC2871IUHF#PBF support?
The LTC2871IUHF#PBF supports RS232, RS485, and RS422 communication protocols.
- What is the operating supply voltage range for the LTC2871IUHF#PBF?
The operating supply voltage range is from 3V to 5.5V.
- What is the maximum data rate for RS485 and RS232 in the LTC2871IUHF#PBF?
The maximum data rate for RS485 is up to 20Mbps, and for RS232, it is up to 500kbps.
- Does the LTC2871IUHF#PBF have built-in ESD protection?
Yes, it has high ESD protection of ±16kV.
- What is the logic interface voltage range for the LTC2871IUHF#PBF?
The logic interface voltage range is from 1.7V to 5.5V.
- How many RS485 nodes can the LTC2871IUHF#PBF support?
It can support up to 256 RS485 nodes.
- What package type is the LTC2871IUHF#PBF available in?
It is available in a 38-Lead Plastic QFN (5mm × 7mm) package.
- What is the operating temperature range for the LTC2871IUHF#PBF?
The operating temperature range is from –40°C to 85°C.
- Does the LTC2871IUHF#PBF have an integrated DC/DC boost converter?
Yes, it has an integrated DC/DC boost converter for driving RS232 levels.
- What is the purpose of the logic loopback mode in the LTC2871IUHF#PBF?
The logic loopback mode is for diagnostic self-test, steering the driver inputs to the receiver outputs.
