DS89C21中文资料差动 CMOS 线路驱动器和接收器对数据手册TI规格书

描述 Description

The DS89C21 is a differential CMOS line driver and receiver pair, designed to meet the requirements of TIA/EIA-422-A (RS-422) electrical characteristics interface standard. The DS89C21 provides one driver and one receiver in a minimum footprint. The device is offered in an 8-pin SOIC package.
The CMOS design minimizes the supply current to 6 mA, making the device ideal for use in battery powered or power conscious applications.
The driver features a fast transition time specified at 2.2 ns, and a maximum differential skew of 2 ns making the driver ideal for use in high speed applications operating above 10 MHz.
The receiver can detect signals as low as 200 mV, and also incorporates hysteresis for noise rejection. Skew is specified at 4 ns maximum.
The DS89C21 is compatible with TTL and CMOS levels (DI and RO).

特性 Features

• Meets TIA/EIA-422-A (RS-422) and CCITT V.11 Recommendation
• Guaranteed AC Parameters:
• Maximum Receiver Skew 4.0 ns
• Extended Temperature Range: −40°C to +85°C
• Operates over 20 Mbps
• Receiver OPEN Input Failsafe Feature

简介

DS89C21属于集成电路（IC）的驱动器接收器收发器。由TI制造生产的DS89C21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。