ST485集成电路（IC）的驱动器接收器收发器规格书PDF中文资料

ST485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ST485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 ST485 is al low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver.

This transceiver draw 300µA (typ.) of supply current when unloaded or fully loaded with disabled drivers.

■ LOW QUIESCENT CURRENT: 300µA

■ DESIGNED FOR RS-485 INTERFACE APPLICATIONS

■ -7V TO 12V COMMON MODE INPUT VOLTAGE RANGE

■ DRIVER MAINTAINS HIGH IMPEDANCE IN 3-STATE OR WITH THE POWER OFF

■ 70mV TYPICAL INPUT HYSTERESIS

■ 30ns PROPAGATION DELAYS, 5ns SKEW

■ OPERATE FROM A SINGLE 5V SUPPLY

■ CURRENT LIMITING AND THERMAL SHUTDOWN FOR DRIVER OVERLOAD PROTECTION

■ ALLOWS UP TO 64 TRANSCEIVERS ON THE BUS