LTC490IS8

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LTC490IS8

RS-422/RS-485 Interface IC LTC490 - Differential Driver and Receiver Pair

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Übersicht

Description

The LTC490IS8 is a low-power, differential line driver from Analog Devices, designed for robust communication in noisy environments. It features a high output drive capability, capable of delivering up to ±60 mA, making it suitable for driving data lines over long distances. The device supports a wide supply voltage range of 4.5V to 12V and operates at a low quiescent current, making it ideal for battery-powered applications.
The LTC490IS8 includes thermal shutdown and short-circuit protection, ensuring reliability in various operating conditions. It provides a typical output voltage swing of 3.5V and has a fast rise and fall time, which helps in maintaining signal integrity at high data rates.
With its enhanced noise immunity and differential signaling, the LTC490IS8 is commonly used in industrial automation, telecommunications, and other applications that require reliable data transmission over twisted-pair cables. Its small package size also makes it suitable for space-constrained designs.

Features

The LTC490IS8 is a low-power, dual differential driver designed for RS-485 and RS-422 communications. Key features include:
1. Low Power Consumption: Operates with a supply voltage range of 3.0V to 5.5V, making it suitable for battery-powered applications.
2. High Data Rates: Capable of transmitting at data rates up to 115 kbps, ensuring efficient communication.
3. Wide Common Mode Range: Supports a common mode voltage range of -7V to +12V, enhancing reliability in noisy environments.
4. Low Voltage Operation: Can function with low voltage levels, ideal for modern digital systems.
5. Thermal Shutdown: Provides protection against overheating, ensuring device longevity.
6. Short-circuit Protection: Safeguards against damage in case of output short circuits.
7. Enhanced ESD Protection: Offers improved electrostatic discharge resilience, vital for robust performance.
These features make the LTC490IS8 suitable for industrial, automotive, and telecommunications applications where reliable data transmission is crucial.

Package

The LTC490IS8 is available in an 8-lead MSOP (Micro Small Outline Package) format. This compact package type is designed for low-profile applications, offering efficient space utilization on circuit boards.

Pinout

The LTC490IS8 is an 8-pin differential line driver. Its primary functions include transmitting data over long distances with high noise immunity and low power consumption. The pin count is 8, and the pin functions are as follows:
1. V+ (Pin 1): Positive power supply.
2. GND (Pin 2): Ground reference.
3. DI (Pin 3): Driver input (data input).
4. RO (Pin 4): Receiver output (for receiving data).
5. A (Pin 5): Non-inverting output.
6. B (Pin 6): Inverting output.
7. R (Pin 7): Receiver input (for receiving data).
8. V- (Pin 8): Negative power supply.
This device is suitable for various applications, including RS-485 communication, where robust data transmission is essential. It operates with a wide supply voltage range and features low power consumption, making it effective for battery-operated devices.

Manufacturer

The LTC490IS8 is manufactured by Analog Devices, Inc., a leading semiconductor company known for its high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). Analog Devices specializes in providing solutions for various applications, including automotive, industrial, communications, and consumer electronics. The company focuses on precision and performance, catering to a wide range of markets by offering innovative technologies that enhance signal processing capabilities and improve system performance.

Application

The LTC490IS8 is a low-power, high-speed CMOS differential transceiver designed for RS-485 and RS-422 communication standards. Its application areas include industrial automation, data acquisition systems, networked communication, and automation control systems. It is suitable for long-distance communication, enabling reliable data transmission in environments with electrical noise, making it ideal for building automation, process control, and remote sensing applications.

Equivalent

The LTC490IS8 chip is an RS-485/RS-422 transceiver. Equivalent products include the SN75176, MAX1487, and ADM2483. Always check specific datasheets for pin compatibility and electrical characteristics to ensure proper function in your application.

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