MAX14770/MAX14770E 高ESD总线的RS-4

MAX14770/MAX14770E 高静电现场总线的RS-485收发器

概述

The MAX14770E is a half-duplex, ±35kV HBM high ESD-protected transceiver for Profibus-DP® and RS-485 applications. In addition, it can be used for RS-422/V.11 communications. The MAX14770E is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards.

The MAX14770E operates from a +5V supply and has true fail-safe circuitry that guarantees a logic-high receiver output when the receiver inputs are open or shorted.

The MAX14770E features a 1/4 standard-unit load receiver input impedance, allowing up to 128 1/4 unit load transceivers on the bus. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry.

The MAX14770E is available in 8-pin SO and tiny TDFN (3mm x 3mm) packages, and is specified over the extended (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges.

关键特性

Meets EIA 61158-2 Type 3 Profibus-DP

+4.5V to +5.5V Supply Voltage

20Mbps Data Rate

Short-Circuit Protected

True Fail-Safe Receiver

Thermal-Shutdown Protected

Hot Swappable

High ESD Protection

• ±35kV Human Body Model (HBM)
• ±20kV IEC 61000-4-2 Air Gap
• ±10kV IEC 61000-4-2 Contact

-40°C to +125°C Automotive Temperature Range in Tiny 8-Pin (3mm x 3mm) TDFN

应用/使用

工业向场总线
	机械编码器
	运动控制器
	Profibus-DP网络
	RS-485网络

功能框图