LTC2850HMS8#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: LTC2850HMS8#TRPBF is a high-speed RS485/RS422 transceiver designed for use in industrial and automotive applications. It provides robust communication over long distances and in noisy environments.

Characteristics: - High Speed: The LTC2850HMS8#TRPBF supports data rates up to 20Mbps, making it suitable for high-speed communication requirements. - Robust Communication: It features ±60V fault protection on the bus pins, ensuring reliable operation even in harsh industrial environments. - Low Power Consumption: The transceiver operates with a low supply current of 300μA, making it energy-efficient. - Wide Supply Voltage Range: It can operate from a single 3V to 5.5V supply, providing flexibility in various applications. - Small Package: The LTC2850HMS8#TRPBF comes in an MSOP-8 package, which is compact and space-saving. - ESD Protection: It offers ±15kV Human Body Model (HBM) ESD protection on the bus pins, safeguarding against electrostatic discharge events.

Package and Quantity: LTC2850HMS8#TRPBF is available in an MSOP-8 package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 20Mbps
• Operating Temperature Range: -40°C to 85°C
• Fault Voltage: ±60V
• Supply Current: 300μA (typical)
• ESD Protection: ±15kV (HBM)
• Package Type: MSOP-8

Pin Configuration

The LTC2850HMS8#TRPBF has the following pin configuration:

___________ | | DE |1 8| VCC A |2 7| B GND|3 6| Y/Z RE |4 5| Z/Y |___________|

Functional Features

• DE (Driver Enable): This pin controls the driver output. When DE is low, the driver is disabled, and the receiver is enabled.
• A/B: These pins are the RS485/RS422 differential bus lines. They connect to the external communication network.
• RE (Receiver Enable): This pin enables the receiver output. When RE is low, the receiver is enabled, and the driver is disabled.
• Y/Z: These pins are the receiver outputs. The output polarity depends on the logic level of the A/B inputs.

Advantages and Disadvantages

Advantages: - High-speed data transmission capability. - Robust communication in noisy environments. - Wide supply voltage range for flexibility. - Compact package size for space-saving designs. - ESD protection for enhanced reliability.

Disadvantages: - Limited to RS485/RS422 communication protocols. - Not suitable for low-speed applications.

Working Principles

The LTC2850HMS8#TRPBF operates as an RS485/RS422 transceiver by converting the single-ended signals from the A/B inputs into differential signals for transmission over long distances. It uses a combination of line drivers and receivers to achieve reliable communication in industrial and automotive environments. The DE and RE pins control the direction of data flow, enabling either transmission or reception.

Application Field Plans

The LTC2850HMS8#TRPBF finds applications in various fields, including: 1. Industrial Automation: It is used in PLCs (Programmable Logic Controllers), motor control systems, and industrial networking equipment. 2. Automotive Electronics: It is employed in automotive communication networks, such as CAN (Controller Area Network) buses and LIN (Local Interconnect Network) systems. 3. Building Automation: It is utilized in HVAC (Heating, Ventilation, and Air Conditioning) systems, access control systems, and lighting control networks.

Alternative Models

1. MAX485: This IC offers similar functionality to the LTC2850HMS8#TRPBF and is widely used in RS485 applications.
2. SN75176: Another popular choice for RS485/RS422 communication, providing reliable data transmission over long distances.
3. ADM485: This transceiver features low power consumption and is suitable for battery-powered applications.

These alternative models can be considered based on specific application requirements and availability.

In conclusion, the LTC2850HMS8#TRPBF is a high-speed RS485/RS422 transceiver designed for robust communication in industrial and automotive applications. Its compact package, wide supply voltage range, and ESD protection make it a versatile choice for various communication networks.