LTC1338 5V Low Power RS232 5-Driver/3-Receiver Transceiver

The LTC1338 is a 5-driver/3-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 500µA. The charge pump only requires four 0.1µF capacitors.

In SHUTDOWN mode, the supply current is further reduced to 0.2µA. In RECEIVER ALIVE mode, all three receivers are kept alive and the supply current is 50µA. All RS232 outputs assume a high impedance state in SHUTDOWN and with the power off.

The LTC1338 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3kohms 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: 500µA
0.2µA Supply Current in SHUTDOWN
50µA Supply Current in RECEIVER ALIVE Mode
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
RS232 I/O Lines Can Be Forced to ±25V Without Damage
Flowthrough Architecture

参数

应用

Battery-Powered Modems
Battery-Powered DCE
Notebook Computers
Palmtop Computers

典型应用图

LTC1338 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) *
LTC1338CG	SSOP	28	C	$6.75	$5.45
LTC1338CG#PBF	SSOP	28	C	$6.75	$5.45
LTC1338CG#TR	SSOP	28	C		$5.55
LTC1338CG#TRPBF	SSOP	28	C		$5.55
LTC1338CNW	PDIP	28	C	$6.25	$5.05
LTC1338CNW#PBF	PDIP	28	C	$6.25	$5.05
LTC1338CSW	SO	28	C	$6.25	$5.05
LTC1338CSW#PBF	SO	28	C	$6.25	$5.05
LTC1338CSW#TR	SO	28	C		$5.15
LTC1338CSW#TRPBF	SO	28	C		$5.15
LTC1338IG	SSOP	28	I	$7.45	$5.85
LTC1338IG#PBF	SSOP	28	I	$7.45	$5.85
LTC1338IG#TR	SSOP	28	I		$5.95
LTC1338IG#TRPBF	SSOP	28	I		$5.95
LTC1338INW	PDIP	28	I	$6.95	$5.60
LTC1338INW#PBF	PDIP	28	I	$6.95	$5.60
LTC1338ISW	SO	28	I	$6.95	$5.60
LTC1338ISW#PBF	SO	28	I	$6.95	$5.60
LTC1338ISW#TR	SO	28	I		$5.70
LTC1338ISW#TRPBF	SO	28	I		$5.70

LTC1338 数据手册及相关资料下载

数据手册 (英文) : LTC1338 - 5V Low Power RS232 5-Driver/3-Receiver Transceiver.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