LTC1349 5V Low Power RS232 3-Driver/5-Receiver Transceiver with 2 Receivers Active in Shutdown

The LTC™1349 is a 3-driver/ 5-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 300µA. The charge pump only requires four 0.1µF capacitors.

In Shutdown mode, two receivers are kept alive and the supply current is 35µA. All RS232 outputs assume a high impedance state in Shutdown and with the power off.

The LTC1349 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3k ohms load. Both driver outputs and receiver inputs can be forced to �25V without damage, and can survive multiple ±10kV ESD strikes

产品特点 Features

Low Supply Current: 300µA
Two Receivers Kept Alive in Shutdown
ESD Protection Over ±10kV
Operates from a Single 5V Supply
Uses Small Capacitors: 0.1µF
Operates to 120k Baud
Three-State Outputs Are High Impedance When Off
Output Overvoltage Does Not Force Current Back into Supplies
RS232 I/O Lines Can Be Forced to ±25V Without Damage
Pin Compatible with LT1137A and LT1237
Flowthrough Architecture

应用

Notebook Computers
Palmtop Computers

典型应用图

参数

LTC1349 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) *
LTC1349CG	SSOP	28	C	$6.35	$4.95
LTC1349CG#PBF	SSOP	28	C	$6.35	$4.95
LTC1349CG#TR	SSOP	28	C		$5.05
LTC1349CG#TRPBF	SSOP	28	C		$5.05
LTC1349CNW	PDIP	28	C	$5.85	$4.60
LTC1349CNW#PBF	PDIP	28	C	$5.85	$4.60
LTC1349CSW	SO	28	C	$5.85	$4.60
LTC1349CSW#PBF	SO	28	C	$5.85	$4.60
LTC1349CSW#TR	SO	28	C		$4.70
LTC1349CSW#TRPBF	SO	28	C		$4.70
LTC1349IG	SSOP	28	I	$6.90	$5.45
LTC1349IG#PBF	SSOP	28	I	$6.90	$5.45
LTC1349IG#TR	SSOP	28	I		$5.55
LTC1349IG#TRPBF	SSOP	28	I		$5.55
LTC1349INW	PDIP	28	I	$6.40	$5.05
LTC1349INW#PBF	PDIP	28	I	$6.40	$5.05
LTC1349ISW	SO	28	I	$6.40	$5.05
LTC1349ISW#PBF	SO	28	I	$6.40	$5.05
LTC1349ISW#TR	SO	28	I		$5.15
LTC1349ISW#TRPBF	SO	28	I		$5.15

LTC1349 数据手册及相关资料下载

数据手册 (英文) : LTC1349 - 5V Low Power RS232 3-Driver/5-Receiver Transceiver with 2 Receivers Active in Shutdown.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) : DN29 - A Single Supply RS232 Interface for Bipolar A to D Converters.PDF
设计要点 (英文) : DN64 - RS232 Transceivers for Hand Held Computers Withstand 10kV ESD.PDF
设计要点 (英文) : DN71 - Regulator Circuit Generates Both 3.3V and 5V Outputs from 3.3V or 5V to Run Computers and RS232.PDF
设计要点 (英文) : DN75 - RS232 Interface Circuits for 3.3V Systems.PDF
设计要点 (英文) : DN80 - ESD Testing for RS232 Interface Circuits.PDF
可靠性数据 : R277 Reliability Data .PDF
产品选型卡 : LTM2882 - Isolated RS232 + 1W Power.PDF
产品选型卡 : RS232 Quick Guide.PDF