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LTC2871IFEPBF PDF预览

LTC2871IFEPBF

更新时间: 2024-02-05 05:57:06
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
36页 392K
描述
RS232/RS485 Multiprotocol Transceivers with Integrated Termination

LTC2871IFEPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:QFN包装说明:HVQCCN, LCC38,.2X.28,20
针数:38Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:3.27差分输出:YES
驱动器位数:3输入特性:DIFFERENTIAL SCHMITT TRIGGER
接口集成电路类型:LINE TRANSCEIVER接口标准:EIA-232; EIA-422; EIA-485
JESD-30 代码:R-PQCC-N38JESD-609代码:e3
长度:7 mm湿度敏感等级:1
功能数量:3端子数量:38
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:HVQCCN
封装等效代码:LCC38,.2X.28,20封装形状:RECTANGULAR
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE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:200 ns接收器位数:3
座面最大高度:0.8 mm子类别:Line Driver or Receivers
最大供电电压:5.5 V最小供电电压:1.7 V
标称供电电压:3.3 V电源电压1-最大:5.5 V
电源电压1-分钟:3 V电源电压1-Nom: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:NO LEAD端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
最大传输延迟:70 ns宽度:5 mm
Base Number Matches:1

LTC2871IFEPBF 数据手册

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LTC2870/LTC2871  
RS232/RS485 Multiprotocol  
Transceivers with  
Integrated Termination  
DESCRIPTION  
FEATURES  
The LTC®2870/LTC2871 are robust pin-configurable mul-  
tiprotocol transceivers, supporting RS232, RS485, and  
RS422 protocols, operating on a single 3V to 5.5V supply.  
TheLTC2870canbeconfiguredastwoRS232single-ended  
transceiversoroneRS485differentialtransceiveronshared  
I/O lines. The LTC2871 offers independent control of two  
RS232 transceivers and one RS485 transceiver, each on  
dedicated I/O lines.  
n
One RS485 and Two RS232 Transceivers  
n
3V to 5.5V Supply Voltage  
n
20Mbps RS485 and 500kbps RS232  
n
Automatic Selection of Integrated RS485 (120Ω)  
and RS232 (5kΩ)Termination Resistors  
n
Half-/Full-Duplex RS485 Switching  
n
High ESD: 2ꢀkV (TC2870), 1ꢀkV (TC2871)  
n
Logic Loopback Mode  
1.7V to 5.5V Logic Interface  
Supports Up to 256 RS485 Nodes  
n
Pin-controlled integrated termination resistors allow  
for easy interface reconfiguration, eliminating external  
resistors and control relays. Half-duplex switches allow  
four-wire and two-wire RS485 configurations. Loopback  
mode steers the driver inputs to the receiver outputs for  
diagnostic self-test.The RS485 receivers support up to  
256 nodes per bus, and feature full failsafe operation for  
floating, shorted or terminated inputs.  
n
n
RS485 Receiver Failsafe Eliminates UART Lockup  
n
Available in 28-Pin 4mm × 5mm QFN and  
TSSOP (LTC2870), and 38-Pin 5mm × 7mm QFN  
and TSSOP (LTC2871)  
APPLICATIONS  
n
Flexible RS232/RS485/RS422 Interface  
An integrated DC/DC boost converter uses a small induc-  
tor and one capacitor, eliminating the need for multiple  
supplies for driving RS232 levels.  
n
Software Selectable Multiprotocol Interface Ports  
n
Point-of-Sale Terminals  
n
Cable Repeaters  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
n
Protocol Translators  
TYPICAL APPLICATIONS  
Protocol Switching with  
Simultaneous Protocols and  
RS485 Termination Switching  
RS485 Duplex Switching  
Automatic Termination Selection  
1.7V TO V  
1.7V TO V  
1.7V TO V  
3V TO 5.5V  
3V TO 5.5V  
3V TO 5.5V  
CC  
CC  
CC  
LTC2870  
LTC2871  
LTC2870,  
LTC2871  
V
V
V
V
V
V
CC  
L
CC  
L
CC  
L
485/232  
TE485  
RS485  
RS232 RS485  
TERMINATION  
OFF ON  
Y
DY  
120Ω  
120Ω  
Y
Z
Y
Z
DI  
DI,  
DY  
Z
A
DZ  
RA  
RO  
RS485  
FULL HALF  
DUPLEX  
B
H/F  
DIN1  
DOUT1  
RIN1  
A
B
A
B
ROUT1  
DIN2  
RO,  
RB  
DOUT2  
RIN2  
RB  
ROUT2  
28701 TA01  
28701f  
1

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