SN65LBC172A中文资料四路 RS-485 差分线路驱动器数据手册TI规格书

描述 Description

The SN65LBC172A and SN75LBC172A are quadruple differential line drivers with 3-state outputs, designed for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.

These devices are optimized for balanced multipoint bus transmission at signalling rates up to 30 million bits per second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment.

Each driver features current limiting and thermal-shutdown circuitry making it suitable for high-speed mulitpoint data transmission applications in noisy environments. These devices are designed using LinBiCMOS™, facilitating low power consumption and robustness.

The G and G inputs provide driver enable control using either positive or negative logic. When disabled or powered off, the driver outputs present a high-impedance to the bus for reduced system loading.

The SN75LBC172A is characterized for operation over the temperature range of 0°C to 70°C. The SN65LBC172A is characterized over the temperature range from -40°C to 85°C.

特性 Features

• Designed for TIA/EIA-485, TIA/EIA-422, andISO 8482 Applications
• Propagation Delay Times 1.5 mA Max
• Driver Positive- and Negative-Current Limiting
• Thermal Shutdown Protection
• Industry Standard Pin-Out, Compatible With SN75172, AM26LS31, DS96172, LTC486, and MAX3045
LinBiCMOS is a trademark of Texas Instruments. The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).

简介

SN65LBC172A属于集成电路（IC）的驱动器接收器收发器。由TI制造生产的SN65LBC172A驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。