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MAX14890EATJ+ PDF预览

MAX14890EATJ+

更新时间： 2024-09-13 20:09:31
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
30页 829K
描述
Line Receiver,

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中文翻译

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MAX14890EATJ+ 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：6 weeks风险等级：2.25
接口集成电路类型：LINE RECEIVER峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX14890EATJ+ 数据手册

 浏览型号MAX14890EATJ+的Datasheet PDF文件第2页浏览型号MAX14890EATJ+的Datasheet PDF文件第3页浏览型号MAX14890EATJ+的Datasheet PDF文件第4页浏览型号MAX14890EATJ+的Datasheet PDF文件第5页浏览型号MAX14890EATJ+的Datasheet PDF文件第6页浏览型号MAX14890EATJ+的Datasheet PDF文件第7页 
MAX14890E  
Incremental Encoder Interface for RS-422,  
HTL, and TTL with Digital Inputs  
General Description  
The MAX14890E incremental encoder receiver contains  
four differential receivers and two single-ended receivers.  
Benefits and Features  
● High Flexibility Supports All Encoder Types  
• Selectable RS-422/HTL/TTL/DI Receivers  
• RS-422/TTL Switching Rates Up to 35Mbps  
• HTL Switching Rates Up to 400kHz  
The differential receivers can be operated in RS-422 or  
differential high-threshold logic (HTL) modes and are  
optionally configurable for single-ended TTL/HTL operation.  
The MAX14890E features a wide common mode input  
range of -20V to +20V in RS-422 mode.  
• SPI or Pin-Controlled Operation  
• SPI Interface Allows Per-Receiver Configuration  
• 1.62V to 5.5V Logic Interface  
● Integrated Fault Detection Reduces Down-Time  
• Open-Wire and Short-Circuit Detection  
The auxiliary IEC 61131-2 Type-1/Type-3 digital inputs  
are designed for operation with switches or proximity  
sensors and can be individually configured for TTL operation.  
• Overvoltage and Undervoltage Fault Detection  
● Integrated Protection Ensures Robust  
Communication  
All receiver input signals are fault protected to voltage shorts  
in the ±40V range. Per channel fault detection provides  
warning of irregular conditions such as small differential  
signals, shorts, opens, overvoltages, and undervoltages.  
• ±40V Fault Protection Range  
• ±20V RS-422 Common Mode Range  
• DI Glitch Filters  
The MAX14890E features a pin-selectable SPI or parallel-  
logic interface. SPI control provides detailed diagnostics  
and individual configurations for receivers.  
• ±25kV HBM ESD  
• ±7kV Air-Gap per IEC 61000-4-2 ESD  
• ±10kV Contact per IEC 61000-4-2 ESD  
• -40°C to +125°C Operating Temperature Range  
The MAX14890E is available in a 32-pin TQFN-EP (5mm  
x 5mm) and operates over the -40°C to +125°C tempera-  
ture range.  
Applications  
● Encoder Interfaces  
● Motor Controllers  
● Pulse Counters  
Ordering Information appears at end of data sheet.  
● Servo Control Commutation  
Typical Operating Circuit  
3.3V to 5V  
5V  
VCC  
Input Receiver Modes  
VL  
ENCODER  
MODE  
RS-422  
D-HTL  
SE-HTL  
TTL  
RxA RxB RxZ RxY RxDI2 RxDI3  
A
A
B
B
AO  
RxA  
RxB  
RS-422 A  
RS-422 B  
RS-422 Z  
120Ω  
120Ω  
5V  
5V  
5V  
5V  
√
√
√
√
√
√
√
√
√
√
√
√
√
√
AFAULT  
BO  
BFAULT  
Z
ZO  
ZFAULT  
YO  
RxZ  
RxY  
120Ω  
Z
√
√
√
√
√
√
DIY  
DI  
ASIC  
TTL ALARM  
DO  
YFAULT  
LO2  
DI2  
DI3  
PROXIMITY  
SENSOR  
RxD2  
DO  
LO3  
PROXIMITY  
SENSOR  
RxD3  
SNGL/CLK = 0  
TTL/SDI = 1  
DI/TTLY = 1  
DI/TTL2 = 1  
DI/TTL3 = 1  
MAX14890  
COUNTER/  
MOTOR  
CONTROLLER  
ENCODER CIRCUIT WITH RS-422 SIGNALS AND TTL ALARM SIGNAL  
19-7536; Rev 0; 3/15  
1234567...30

中文翻译

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