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LTC491IS

产品分类: LIN收发器
厂牌: ANALOG DEVICES
产品描述: Differential,RS-422,RS-485 4.75V 5.25V 2.5Mbps(Max) SOP 贴片安装
供应商型号:
供应商:
标准整包数: 0
ANALOG DEVICES LIN收发器 LTC491IS

LTC491IS概述

    Product Introduction
    The LTC491 is a low-power differential bus/line transceiver specifically designed for multipoint data transmission applications adhering to the RS485 and RS422 standards. Its primary function is to facilitate robust communication over long distances while supporting an extended common mode range of -7V to 12V. This device operates on a single 5V supply and allows for ±7V ground difference between devices on the bus, making it highly suitable for systems requiring high reliability and wide temperature operation. Additionally, the chip is pin-compatible with the SN75180, offering seamless integration into existing designs.
    Technical Parameters
    - Power Consumption: ICC = 300µA typical.
    - Common Mode Range: -7V to 12V.
    - Input Hysteresis: 70mV typical.
    - Propagation Delay: 28ns typical for 2.5Mbps operation with a skew of 5ns.
    - Thermal Shutdown: Protects against excessive power dissipation.
    - Package Types: Available in 14-Lead PDIP and SO Packages.
    Product Features and Advantages
    The LTC491 offers several distinct advantages over traditional RS485 transceivers:
    1. Low Power Consumption: Consumes minimal current, making it ideal for battery-powered applications.
    2. Extended Common Mode Range: Supports a wide range of operational voltages, ensuring compatibility across diverse environments.
    3. High Reliability: Features thermal shutdown protection and fault-safe reception, enhancing system durability.
    4. Compatibility: Pin-compatible with the SN75180, facilitating easy upgrades and replacements.
    5. Wide Operating Temperature Range: Operates effectively within temperatures ranging from -40°C to 85°C.
    Application Cases and Usage Recommendations
    Typical Application:
    The LTC491 is commonly used in industrial automation systems, building management networks, and other distributed control systems where reliable communication over long distances is essential.
    - Example Scenario:
    In a factory floor setup, multiple sensors and actuators communicate via RS485. By implementing the LTC491, you can achieve seamless data transfer even under challenging environmental conditions.
    Usage Suggestions:
    - Ensure proper termination of the transmission lines using 120Ω resistors to minimize signal distortion.
    - Consider AC coupling techniques if minimizing power consumption is critical, especially during idle periods.
    - Always incorporate ESD protection mechanisms, such as TransZorbs, to safeguard against transient voltage spikes.
    Compatibility and Support
    The LTC491 is fully compatible with standard RS485 and RS422 protocols, allowing integration into a variety of existing hardware setups. Linear Technology provides comprehensive documentation and technical support to assist users in optimizing performance and troubleshooting issues.
    Common Issues and Solutions
    | Problem | Solution |

    | Incorrect Termination | Verify and correct termination resistors per application requirements. |
    | Signal Distortion | Check for proper AC coupling capacitors and adjust accordingly. |
    | Overheating | Implement additional cooling measures or reduce operational load. |
    Conclusion and Recommendation
    In summary, the LTC491 is a highly efficient and reliable RS485/RS422 transceiver ideal for demanding industrial applications. Its low power consumption, extensive common mode range, and robust protective features make it a standout choice in the market. We strongly recommend the LTC491 for any project requiring durable and efficient multi-point data transmission solutions.

LTC491IS参数

参数
LIN总线唤醒功能 -
LIN 规格 -
支持协议 Differential,RS-422,RS-485
最大LIN总线电压 -
调节器电压 -
最大工作供电电压 5.25V
最小LIN总线电压 -
内置选项 -
数据速率 2.5Mbps(Max)
最小工作供电电压 4.75V
8.74mm(Max)
3.99mm(Max)
1.5mm(Max)
通用封装 SOP
安装方式 贴片安装
应用等级 工业级

LTC491IS厂商介绍

Analog Devices(简称ADI)是一家全球领先的半导体公司,专注于模拟、混合信号和数字信号处理(DSP)集成电路(IC)的设计、制造和营销。公司成立于1965年,总部位于美国马萨诸塞州的诺伍德。

ADI的主营产品主要分为以下几类:
1. 数据转换器:包括模数转换器(ADC)和数模转换器(DAC),广泛应用于通信、工业、医疗等领域。
2. 放大器和比较器:提供各种高性能放大器和比较器产品,用于信号放大、滤波和比较等。
3. 射频(RF)和微波产品:包括射频收发器、混频器、放大器等,应用于无线通信、**等领域。
4. 电源管理:提供电源转换、电源管理等解决方案,满足各种电源需求。
5. 接口和通信:包括以太网、串行通信等接口产品,用于数据传输和通信。
6. 处理器和DSP:提供高性能处理器和数字信号处理器,用于复杂信号处理和控制。

ADI的优势在于其在模拟和混合信号领域的深厚技术积累,以及对客户需求的深刻理解。公司不断推出创新产品,满足客户在各种应用场景下的需求,如5G通信、自动驾驶、工业自动化等。此外,ADI还提供全面的技术支持和定制化服务,帮助客户实现产品快速上市。

LTC491IS数据手册

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ANALOG DEVICES LIN收发器 ANALOG DEVICES LTC491IS LTC491IS数据手册

LTC491IS封装设计

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