Datasheet > TPT485N

TPT485N

更新时间： 2024-04-09 19:00:04

品牌	Logo	应用领域
思瑞浦 - 3PEAK		/
页数	文件大小	规格书
12页	892K
描述
±18K ESD Protection, Bus-Polarity Correcting RS-485 Transceiver

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TPT485N 数据手册

TPT485N

± 18K ESD Protection, Bus-Polarity Correcting RS-485 Transceiver

Description

3PEAK

Features

The TPT485N is a low-power RS-485 transceiver

with

automatic bus-polarity correction and transient protection.

corrects the

◼

Exceeds Requirements of EIA-485 Standard

Bus-Polarity Correction within 100 ms meet

SGCC spec

Upon hot plug-in, the device detects and

bus polarity within the first 100 ms of bus idling. On-chip

transient protection protects the device against IEC61000

ESD and EFT transients. This device has robust drivers

and receivers for demanding industrial applications. The

bus pins are robust to electrostatic discharge (ESD)

events, with high levels of protection to Human-Body

Model (HBM), Air-Gap Discharge, and Contact Discharge

specifications. The device combines a differential driver

and a differential receiver, which operate together from a

◼

Data Rate: 300 bps to 500 kbps

Works with Two Configurations:

– Failsafe Resistors Only

– Failsafe and Differential Termination Resistors

Up to 256 Nodes on a Bus (1/8 unit load)

Wide Supply Voltage 3V to 5.5V

SOIC-8 Package for Backward Compatibility

Bus-Pin Protection:

◼

outputs

single 5-V power supply. The driver differential

– ±1 8 kV HBM protection

and the receiver differential inputs are connected

internally to form a bus port suitable for half-duplex

– ±1 2 kV IEC61000-4-2 Contact Discharge

– ±15 kV IEC61000-4-2 Air Discharge

(two-wire bus) communication. The device

features a

making the device

wide common-mode voltage range

suitable for multi-point applications over long cable runs.

The TPT485N is available in SOP8 package, and is

characterized from –40°C to 125°C .

Applications

3PEAK and the 3PEAK logo are registered trademarks of

3PEAK INCORPORATED. All other trademarks are the property of their

respective owners.

⚫

E-Metering Networks

HVAC Systems

DMX512-Networks

Function Block Diagram

Automatic Bus-polarity Correction With/

Without Pull-up and Pull-down Resistor

Vcc

0.1μF

RxD

Vcc

MCU

TPT485N

TP485E

DIR

TxD

GND

www.3peak.com

Rev. B1

12 3 4 5 6 7...12

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