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LTM2881HY-3 PDF预览

LTM2881HY-3

更新时间： 2024-02-13 01:45:45
品牌 Logo 应用领域
凌特 - Linear 驱动接口集成电路驱动器
页数 文件大小 规格书
24页 580K
描述
LTM2881 - Complete Isolated RS485/RS422 µModule Transceiver + Power; Package: BGA; Pins: 32; Temperature Range: -40°C to 125°C

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LTM2881HY-3 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：BGA,
针数：32Reach Compliance Code：compliant
风险等级：1.78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-485-A; TIA-485-A; EIA-422
JESD-30 代码：R-PBGA-B32JESD-609代码：e1
长度：15 mm湿度敏感等级：3
功能数量：1端子数量：32
最高工作温度：105 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：BGA
封装形状：RECTANGULAR封装形式：GRID ARRAY
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
最大接收延迟：140 ns接收器位数：1
座面最大高度：3.62 mm最大供电电压：5.5 V
最小供电电压：1.62 V标称供电电压：3.3 V
电源电压1-最大：3.6 V电源电压1-分钟：3 V
电源电压1-Nom：3.3 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Silver/Copper (Sn96.5Ag3.0Cu0.5)
端子形式：BALL端子节距：1.27 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
最大传输延迟：85 ns宽度：11.25 mm
Base Number Matches：1

LTM2881HY-3 数据手册

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LTM2881  
Complete Isolated  
RS485/RS422 µModule  
Transceiver + Power  
FeaTures  
DescripTion  
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RS485/RS422 Transceiver: 2500V  
for 1 Minute  
The LTM®2881 is a complete galvanically isolated full-du-  
plexRS485/RS422µModule® (micromodule)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  
File #E151738  
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UL-CSA Recognized  
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CSA Component Acceptance Notice 5A  
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 (LTM2881-3) or 5.0V (LTM2881-5) Operation  
1.62V to 5.5V Logic Supply Pin for Flexible Digital Interface  
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/μs.  
Maximum Continuous Working Voltage: 560V  
PEAK  
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 (< 10µA)  
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.  
General Purpose CMOS Isolated Channel  
15mm × 11.25mm BGA and LGA Packages  
applicaTions  
Enhanced ESD protection allows this part to withstand up  
to 15kV(humanbodymodel)onthetransceiverinterface  
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 (LTM2881-3)  
5V (LTM2881-5)  
MULTIPLE SWEEPS  
OF COMMON MODE  
TRANSIENTS  
V
CC  
LTM2881  
AVAILABLE CURRENT:  
150mA (LTM2881-5)  
100mA (LTM2881-3)  
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  
2881fi  
1
For more information www.linear.com/LTM2881  
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