LTC2858CMS-2#PBF

Product Overview

Category

The LTC2858CMS-2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the family of transceivers.

Use

This product is primarily used for data communication applications, enabling bidirectional transmission of digital signals between two devices.

Characteristics

• The LTC2858CMS-2#PBF is a low-power, half-duplex RS485/RS422 transceiver.
• It operates with a supply voltage range of 3V to 5.5V, making it suitable for various electronic systems.
• This transceiver offers high-speed data rates up to 20Mbps, ensuring efficient data transfer.
• It features a wide common-mode voltage range (-7V to +12V), allowing for reliable operation in noisy environments.
• The LTC2858CMS-2#PBF incorporates built-in protection against electrostatic discharge (ESD) and bus faults, enhancing its robustness.
• Its small package size (MSOP-10) makes it suitable for space-constrained applications.

Package and Quantity

The LTC2858CMS-2#PBF is available in a miniature surface-mount package (MSOP-10). Each package contains one transceiver.

Specifications

• Supply Voltage Range: 3V to 5.5V
• Data Rate: Up to 20Mbps
• Common-Mode Voltage Range: -7V to +12V
• Operating Temperature Range: -40°C to +85°C
• Package Type: MSOP-10

Pin Configuration

The LTC2858CMS-2#PBF has ten pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Power Supply (VCC) / Ground (GND) --| RO RE |-- Pin 2: Receiver Output (RO) / Receiver Enable (RE) --| DI DE |-- Pin 3: Driver Input (DI) / Driver Enable (DE) --| DE ~RE |-- Pin 4: Driver Enable (DE) / Receiver Enable (RE) --| A B |-- Pins 5 and 6: Differential Data Inputs/Outputs --| B ~A |-- Pins 7 and 8: Differential Data Inputs/Outputs --| ~B ~DE |-- Pin 9: Inverted Driver Enable (~DE) --| ~A ~DI |-- Pin 10: Inverted Driver Input (~DI) |___________| ```

Functional Features

• Half-Duplex Operation: The LTC2858CMS-2#PBF supports half-duplex communication, allowing data transmission in both directions but not simultaneously.
• Fail-Safe Receiver Inputs: The receiver inputs are designed to provide a logic high output when the bus is idle or disconnected, ensuring reliable data reception.
• Hot Swap Capability: This transceiver allows for hot swapping, enabling devices to be connected or disconnected from the bus without causing disruptions.
• Low Power Consumption: The LTC2858CMS-2#PBF is optimized for low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• High-speed data rates enable efficient data transfer.
• Wide common-mode voltage range ensures reliable operation in noisy environments.
• Built-in protection against ESD and bus faults enhances robustness.
• Small package size allows for space-constrained applications.

Disadvantages

• Limited to half-duplex communication, not suitable for simultaneous bidirectional data transfer.

Working Principles

The LTC2858CMS-2#PBF operates based on the RS485/RS422 standard, which uses differential signaling to transmit data. It employs a driver to convert digital signals into balanced differential voltages for transmission over long distances. The receiver then converts the received differential voltages back into digital signals.

Detailed Application Field Plans

The LTC2858CMS-2#PBF finds applications in various fields, including:

1. Industrial Automation: Used for communication between PLCs, sensors, and actuators in industrial control systems.
2. Building Automation: Enables data exchange between HVAC systems, lighting controls, and security devices.
3. Automotive Electronics: Facilitates communication between different electronic modules within vehicles.
4. Telecommunications: Used in networking equipment for reliable data transmission over long distances.
5. Renewable Energy Systems: Enables communication between solar inverters, battery management systems, and monitoring devices.

Detailed Alternative Models

1. MAX485ESA+: A similar half-duplex RS485 transceiver with a supply voltage range of 4.75V to 5.25V.
2. SN65HVD485EDR: Half-duplex RS485 transceiver with a wide supply voltage