LTC1482CS8#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Communication and Networking
• Characteristics: Low Power, High Speed, Half-Duplex RS485 Transceiver
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Facilitates reliable long-distance data communication in industrial applications
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Data Rate: Up to 20Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Drivers/Receivers: 1/1
• Receiver Input Sensitivity: ±200mV
• Driver Output Current: ±60mA
• ESD Protection: ±15kV (Human Body Model)

Detailed Pin Configuration

1. DE (Driver Enable)
2. RE (Receiver Enable)
3. DI (Data Input)
4. RO (Receiver Output)
5. VCC (Supply Voltage)
6. GND (Ground)
7. B (Bus Terminal B)
8. A (Bus Terminal A)

Functional Features

• Half-duplex operation for bidirectional data transmission
• Low power consumption in shutdown mode (<1µA)
• Thermal shutdown protection prevents damage due to excessive heat
• Fail-safe receiver input guarantees a known output state when inputs are open or shorted
• Wide common-mode range allows reliable communication in noisy environments

Advantages and Disadvantages

Advantages: - High-speed data transmission up to 20Mbps - Low power consumption extends battery life in portable devices - Robust design with ESD protection ensures reliability in harsh industrial environments - Fail-safe receiver input enhances system safety

Disadvantages: - Limited to half-duplex communication - Requires external components for complete RS485 network implementation

Working Principles

The LTC1482CS8#TRPBF is a half-duplex RS485 transceiver that enables reliable long-distance data communication in industrial applications. It operates by converting the differential voltage signals on the A and B bus terminals into single-ended logic levels suitable for interfacing with microcontrollers or other digital devices.

The DE (Driver Enable) and RE (Receiver Enable) pins control the direction of data transmission. When DE is high and RE is low, the device is in transmit mode, allowing data to be sent from the DI pin to the bus. Conversely, when DE is low and RE is high, the device is in receive mode, enabling data reception from the bus at the RO pin.

The transceiver features fail-safe receiver inputs, which ensure a known output state when the inputs are open or shorted. This feature enhances system safety by preventing undefined states during idle bus conditions.

Detailed Application Field Plans

The LTC1482CS8#TRPBF is widely used in various industrial applications, including:

1. Factory Automation: Enables reliable communication between PLCs (Programmable Logic Controllers), sensors, and actuators in automated manufacturing systems.
2. Building Automation: Facilitates data exchange between HVAC (Heating, Ventilation, and Air Conditioning) systems, lighting controls, and security systems in commercial buildings.
3. Process Control: Provides robust communication links for monitoring and controlling processes in industries such as oil and gas, chemical, and pharmaceutical.
4. Renewable Energy Systems: Supports data transmission in solar power plants, wind farms, and energy storage systems.
5. Transportation Systems: Enables communication between control units, sensors, and displays in automotive, railway, and marine applications.

Detailed and Complete Alternative Models

1. MAX485ESA+: Similar characteristics and package, manufactured by Maxim Integrated.
2. SN65HVD485EDR: Comparable specifications and pin configuration, produced by Texas Instruments.
3. ADM485ARZ: Alternative option with similar features, available from Analog Devices.

These alternative models offer similar functionality and can be considered as substitutes for the LTC1482CS8#TRPBF in various applications.

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