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MAX14949EWE+T

更新时间： 2024-09-28 21:08:55
品牌 Logo 应用领域
美信 - MAXIM 接口集成电路
页数 文件大小 规格书
20页 834K
描述
Line Transceiver,

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中文翻译

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MAX14949EWE+T 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
Factory Lead Time：20 weeks风险等级：5.7
接口集成电路类型：LINE TRANSCEIVER峰值回流温度（摄氏度）：260
处于峰值回流温度下的最长时间：30Base Number Matches：1

MAX14949EWE+T 数据手册

 浏览型号MAX14949EWE+T的Datasheet PDF文件第2页浏览型号MAX14949EWE+T的Datasheet PDF文件第3页浏览型号MAX14949EWE+T的Datasheet PDF文件第4页浏览型号MAX14949EWE+T的Datasheet PDF文件第5页浏览型号MAX14949EWE+T的Datasheet PDF文件第6页浏览型号MAX14949EWE+T的Datasheet PDF文件第7页 
EVALUATION KIT AVAILABLE  
MAX14949  
5kV  
Isolated 500kbps Half-Duplex  
RMS  
RS-485/RS-422 Transceiver with ±30kV ESD  
Protection and Integrated Transformer Driver  
General Description  
The MAX14949 isolated RS-485/RS-422 transceiver provides  
Benefits and Features  
● High Integration Simplifies Designs  
5000V (60s) of galvanic isolation between the cable-  
• Integrated LDO for Cable-Side Power  
RMS  
• Integrated Transformer Driver for Power Transfer to  
Cable-Side Has Up to 80% Efficiency at 150mA Load  
side (RS-485/RS-422 driver/receiver-side) and the UART-  
side of the device. Isolation improves communication by  
breaking ground loops and reduces noise when there are  
large differences in ground potential between ports. This  
device allows for robust communication up to 500kbps.  
● High-Performance Transceiver Enables Flexible Designs  
• Compliant with RS-485 EIA/TIA-485 Standard  
• 500kbps (max) Data Rate  
• Up to 256 Devices on the Bus  
The device includes an integrated 450kHz transformer  
driver for power transfer to the cable-side of the transceiver  
using an external transformer. An integrated LDO provides  
a simple and space-efficient architecture for providing  
power to the cable-side of the IC.  
● Integrated Protection for Robust Communication  
• ±30kV ESD (HBM) on Driver Outputs/Receiver Inputs  
• 5kV  
Withstand-Isolation Voltage for 60  
RMS  
Seconds (V  
)
ISO  
• 1200V  
Maximum Repetitive Peak-Isolation  
)
The device includes one half-duplex driver/receiver  
channel. The receiver is 1/8-unit load, allowing up to 256  
transceivers on a common bus.  
PEAK  
Voltage (V  
IORM  
• 848V  
Maximum Working-Isolation Voltage (V  
)
RMS  
IOWM  
• >30 Years Lifetime at Rated Working Voltage  
• Withstands ±10kV Surge per IEC 61000-4-5  
• Thermal Shutdown  
Integrated true fail-safe circuitry ensures a logic-high on  
the receiver output when inputs are shorted or open.  
Undervoltage lockout disables the driver when cable-side  
or UART-side power supplies are below functional levels.  
The driver outputs/receiver inputs are protected from  
±30kV electrostatic discharge (ESD) to GNDB on the  
cable-side, as specified by the Human Body Model (HBM).  
Functional Diagram  
The MAX14949 is available in a wide body 16-pin  
SOIC package and operates over the -40°C to +85°C  
temperature range.  
VDDA  
TD1  
TD2  
VLDO  
MAX14949  
LDO  
XFMR  
DRIVER  
Applications  
● Industrial Automation Equipment  
● Programmable Logic Controllers  
● HVAC  
VDDB  
RE  
RXD  
A
B
● Power Meters  
TXD  
DE  
Safety Regulatory Approvals Pending  
● UL According to UL1577  
DEM  
GNDA  
GNDB  
Ordering Information appears at end of data sheet  
.
19-7663; Rev 2; 10/17  
1234567...20

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