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LTC2870IFE#PBF PDF预览

LTC2870IFE#PBF

更新时间： 2024-11-05 19:56:07
品牌 Logo 应用领域
凌特 - Linear 驱动光电二极管接口集成电路驱动器
页数 文件大小 规格书
36页 403K
描述
LTC2870 - RS232/RS485 Multiprotocol Transceivers with Integrated Termination; Package: TSSOP; Pins: 28; Temperature Range: -40°C to 85°C

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LTC2870IFE#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：TSSOP包装说明：HTSSOP, TSSOP28,.25
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.3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-PDSO-G28JESD-609代码：e3
长度：9.7 mm湿度敏感等级：1
功能数量：3端子数量：28
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：TSSOP28,.25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：200 ns接收器位数：3
座面最大高度：1.2 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：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：70 ns宽度：4.4 mm
Base Number Matches：1

LTC2870IFE#PBF 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
1234567...36

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