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LTC2865 PDF预览

LTC2865

更新时间： 2024-01-11 04:39:26
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 390K
描述
Complete Isolated RS485/RS422 μModule

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中文翻译

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LTC2865 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：HTSSOP, TSSOP12,.19
针数：12Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11差分输出：YES
驱动器位数：1输入特性：DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型：LINE TRANSCEIVER接口标准：EIA-422; EIA-485
JESD-30 代码：R-PDSO-G12JESD-609代码：e3
长度：4.039 mm湿度敏感等级：1
功能数量：1端子数量：12
最高工作温度：85 °C最低工作温度：-40 °C
最小输出摆幅：1.5 V最大输出低电流：0.003 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP12,.19封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
电源：3.3 V认证状态：Not Qualified
最大接收延迟：65 ns接收器位数：1
座面最大高度：1.1 mm子类别：Line Driver or Receivers
最大压摆率：1.3 mA最大供电电压：5.5 V
最小供电电压：3 V标称供电电压：3.3 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
最大传输延迟：1500 ns宽度：3 mm
Base Number Matches：1

LTC2865 数据手册

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LTM2881  
Complete Isolated  
RS485/RS422 µModule  
Transceiver + Power  
FEATURES  
DESCRIPTION  
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UL Rated RS485/RS422 Transceiver: 2500V  
The LTM®2881 is a complete galvanically isolated full-  
duplex RS485/RS422 μModule® transceiver. No external  
components are required. A single supply powers both  
sides of the interface through an integrated, isolated, low  
noise, efficient 5V output DC/DC converter.  
RMS  
UL Recognized  
File #E151738  
®
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Isolated DC Power: 5V at Up to 200mA  
No External Components Required  
20Mbps or Low EMI 250kbps Data Rate  
High ESD: 15kV HꢀM on Transceiver Interface  
High Common Mode Transient Immunity: 30kV/μs  
Integrated Selectable 120Ω Termination  
3.3V ꢁLTM2881-3ꢂ or 5.0V ꢁLTM2881-5ꢂ Operation  
1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface  
Common Mode Working Voltage: 560V  
High Input Impedance Failsafe RS485 Receiver  
Current Limited Drivers and Thermal Shutdown  
Compatible with TIA/EIA-485-A and PROFIBUS  
High Impedance Output During Internal Fault Condition  
Low Current Shutdown Mode ꢁ< 10μAꢂ  
General Purpose CMOS Isolated Channel  
Small, Low Profile ꢁ15mm × 11.25mmꢂ  
Coupled inductors and an isolation power transformer  
provide2500V  
ofisolationbetweenthelinetransceiver  
RMS  
and the logic interface. This device is ideal for systems  
where the ground loop is broken allowing for large com-  
mon mode voltage variation. Uninterrupted communica-  
tion is guaranteed for common mode transients greater  
than 30kV/ꢀs.  
PEAK  
Maximum data rates are 20Mbps or 250kbps in slew  
limited mode. Transmit data, DI and receive data, RO, are  
implemented with event driven low jitter processing. The  
receiver has a one-eighth unit load supporting up to 256  
nodes per bus. A logic supply pin allows easy interfacing  
with different logic levels from 1.62V to 5.5V, independent  
of the main supply.  
Surface Mount BGA and LGA Packages  
APPLICATIONS  
Enhanced ESD protection allows this part to withstand up  
to 15kVꢁhumanbodymodelꢂonthetransceiverinterface  
pins to isolated supplies and 10kV through the isolation  
barrier to logic supplies without latch-up or damage.  
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Isolated RS485/RS422 Interface  
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Industrial Networks  
Breaking RS485 Ground Loops  
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L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of  
Isolated PROFIBUS-DP Networks  
Linear Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
Isolated Half-Duplex RS485 μModule Transceiver  
LTM2881 Operating Through 35kV/μs CM Transients  
3.3V ꢁLTM2881-3ꢂ  
5V ꢁLTM2881-5ꢂ  
MULTIPLE SWEEPS  
OF COMMON MODE  
TRANSIENTS  
V
CC  
LTM2881  
AVAILABLE CURRENT:  
150mA ꢁLTM2881-5ꢂ  
100mA ꢁLTM2881-3ꢂ  
V
5V  
500V/DIV  
CC2  
A
PWR  
V
L
RO  
DI  
B
RE  
RO  
TWISTED-PAIR  
CABLE  
1V/DIV  
1V/DIV  
TE  
DE  
Y
Z
DI  
2881 TA01a  
50ns/DIV  
GND  
GND2  
2881 TA01  
2881fe  
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中文翻译

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