ST490AB集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

ST490AB属于集成电路（IC）的驱动器接收器收发器。由意法半导体集团制造生产的ST490AB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。

描述 Description

The ST490A is a low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in full duplex configuration. The ST490A draws 5 mA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply.

特性 Features

■ Low supply current: 5 mA max

■ -7 V to 12 V common mode input voltage range

■ 70 mV typical input hysteresis

■ Designed for 25 Mbps operation

■ Operate from a single 5 V supply

■ ±4 kV ESD protection

■ Current limiting and thermal shutdown for driver overload protection