ST491A集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

ST491A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ST491A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。

DESCRIPTION

The ST491A 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 ST491A draws 5mA (typ.) of supply current when unloaded and operates from a single 5V supply.

■ LOW SUPPLY CURRENT: 5mA MAX

■ DESIGNED FOR RS485 INTERFACE APPLICATIONS

■ -7 TO 12 COMMON MODE INPUT VOLTAGE RANGE

■ 70mV TYPICAL INPUT HYSTERESIS

■ DESIGNED FOR 25Mbps OPERATION

■ OPERATE FROM SINGLE 5 SUPPLY

■ ±4kV ESD PROTECTION

■ CURRENT LIMITING AND THERMAL SHUTDOWN FOR DRIVER OVERLOAD PROTECTION