ST4485EB中文资料3.3 V供电电压、15 kV ESD保护、至高20 Mbps RS-485/RS-422收发器，温度范围[-40℃, 105℃]数据手册ST规格书

描述 Description

The ST4485EB device is a ± 15 kV ESD protected, 3.3 V low power transceiver for RS-485 and RS-422 communications. The device contains one driver and one receiver in half duplex configuration.

The ST4485EB transmits and receives at a guaranteed data rate of at least 20 Mbps.

All transmitter outputs and receiver inputs are protected to ± 15 kV using “Human Body Model”.

The driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state.

特性 Features

• ESD protection
•± 15 kV human body model
•± 8 kV IEC 1000-4-2 contact discharge
• Operate from a single 3.3 V supply - no charge pump required
• Interoperable with 5 V logic
• 1 μA low current shutdown mode max.
• Guaranteed 20 Mbps data rate
• -7 to 12 V common mode input voltage range
• Half duplex versions available
• Industry standard 75176 pinout
• Current limiting and thermal shutdown for driver overload protection
• Guaranteed high receiver output state for floating inputs with no signal present
• Allow up to 64 transceivers on the bus
• Wide operating temperature range: -40 to +105 °C

简介

ST4485EB属于集成电路（IC）的驱动器接收器收发器。由制造生产的ST4485EB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。