ST232A屬于集成電路（IC）的驅動器接收器收發(fā)器。由意法半導體集團制造生產的ST232A驅動器，接收器，收發(fā)器該系列產品的主要功能是提供必需的硬件資源，以通過延長電纜或印制線進行通信。確切的功能會因所采用的通信協議而異，可能包括諸如瞬態(tài)抑制之類的功能，這些功能對于通信用途可能并非絕對必要，但對于可能的使用環(huán)境卻是明智之選。

描述 Description

The ST232A is a 2 driver, 2 receiver device following EIA/TIA-232 and V.28 communication standard. It is particularly suitable for applications where ±12V is not available. The ST232A uses a single 5V power supply and only four external capacitors (0.1μF). Typical applications are in: Portable Computers, Low Power Modems, Interfaces Translation, Battery Powered RS-232 Networks.

Feature summary

■ Supply voltage range: 4.5 to 5.5V

■ Supply current no load (typ): 1.5mA

■ Transmitter output voltage swing (typ): ± 9V

■ Transition slew rate (typ.): 12V/μs

■ Receiver propagation delay (typ.): 0.1μs

■ Receiver input voltage range: ± 30V

■ Data rate (typ.): 400Kbp/s

■ Operating temperature range:

– -40 to 85 °C,

–0 to 70°C