LT1080 Advanced Low Power 5V RS232 Dual Driver/Receiver

The LT®1080/LT1081 are the only dual RS232 driver/receiver with charge pump to guarantee absolutely no latchup. These interface optimized devices provide a realistic balance between CMOS levels of power dissipation and real world requirements for ruggedness. The driver outputs are fully protected against overload and can be shorted to ±30V. Unlike CMOS, the advanced architecture of the LT1080/LT1081 does not load the signal line when “shut down” or when power is off. Both the receiver and RS232 outputs are put into a high impedance state. An advanced output stage allows driving higher capacitive loads at higher speeds with exceptional ruggedness against ESD.

For applications requiring up to five drivers and five receivers with charge pump in one package see the LT1130A Series data sheet. A version of the LT1080/LT1081, the LT1180A and LT1181A that use only 0.1µF capacitors, is also available. All of linear Technology’s RS232 ICs are available in standard surface mount packages

产品特点 Features

Superior to CMOS Improved Speed: -Operates over 120kBaud-Improved Protection: Outputs Can Be Forced to ±30V
Absolutely No Latchup
CMOS Comparable Low Power: 60mW
Can Power Additional RS232 Drivers: 10mA
Supply Current in Shutdown: 1µA
Available in SO Package
Available with or without Shutdown

参数

应用

Portable Computers
Battery-Powered RS232 Systems
Power Supply Generator
Terminals
Modems

典型应用图

LT1080 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT1080CN	PDIP	18	C	$3.75	$3.05
LT1080CN#PBF	PDIP	18	C	$3.75	$3.05
LT1080CSW	SO	18	C	$4.00	$3.25
LT1080CSW#PBF	SO	18	C	$4.00	$3.25
LT1080CSW#TR	SO	18	C		$3.35
LT1080CSW#TRPBF	SO	18	C		$3.35
LT1080IN	PDIP	18	I	$5.08	$4.10
LT1080IN#PBF	PDIP	18	I	$5.08	$4.10
LT1080ISW	SO	18	I	$6.08	$4.95
LT1080ISW#PBF	SO	18	I	$6.08	$4.95
LT1080ISW#TR	SO	18	I		$5.05
LT1080ISW#TRPBF	SO	18	I		$5.05
LT1080MJ/883	CERDIP	18	M

LT1080 数据手册及相关资料下载

数据手册 (英文) : LT1080 - Advanced Low Power 5V RS232 Dual Driver/Receiver.PDF
设计要点 (英文) : DN14 - Extending the Applications of 5V Powered RS232 Transceivers.PDF
设计要点 (英文) : DN27 - Design Considerations for RS-232 Interfaces.PDF
设计要点 (英文) : DN30 - RS232 Transceiver with Automatic Power Shutdown Control.PDF
设计要点 (英文) : DN4 - New Developments in RS232 Interfaces.PDF
可靠性数据 : R001 Reliability Data .PDF
产品选型卡 : LTM2882 - Isolated RS232 + 1W Power.PDF
产品选型卡 : RS232 Quick Guide.PDF