LTC1481 Ultra-Low Power RS485 Transceiver with Shutdown

The LTC™1481 is an ultralow power differential line transceiver designed for data transmission standard RS485 applications. It will also meet the requirements of RS422. The CMOS design offers significant power savings over its bipolar counterparts without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 80µA while operating and less than 1µA in shutdown.

The driver and receiver feature three-state outputs, with the driver outputs maintaining high impedance over the entire common mode range. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state. The receiver has a fail-safe feature which guarantees a high output state when the inputs are left open.

The LTC1481 is fully specified over the commercial and extended industrial temperature range and is available in 8-pin PDIP and SO packages

产品特点 Features

Low Power: Icc = 120µA Max with Driver Disabled
Drivers/Receivers Have ±10kV ESD Protection
1µA Quiescent Current in Shutdown Mode
High Speed: Up to 2.5Mbits/s Data Rate
Icc = 500µA Max with Driver Enabled, No Load
Single 5V Supply
-7V to 12V Common-Mode Range Permits �7V Ground Difference Between Devices on the Data Line
Thermal Shutdown Protection
Power Up/Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Transceiver
Driver Maintains High Impedance in Three-State or with the Power Off
Up to 32 Transceivers on the Bus
30ns Typical Driver Propagation Delays with 5ns Skew
Pin Compatible with the LTC485

应用

Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator

典型应用图

参数

LTC1481 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) *
LTC1481CN8	PDIP	8	C	$3.15	$2.55
LTC1481CN8#PBF	PDIP	8	C	$3.15	$2.55
LTC1481CS8	SO	8	C	$3.40	$2.70
LTC1481CS8#PBF	SO	8	C	$3.40	$2.70
LTC1481CS8#TR	SO	8	C		$2.76
LTC1481CS8#TRPBF	SO	8	C		$2.76
LTC1481IN8	PDIP	8	I	$3.85	$3.00
LTC1481IN8#PBF	PDIP	8	I	$3.85	$3.00
LTC1481IS8	SO	8	I	$4.40	$3.50
LTC1481IS8#PBF	SO	8	I	$4.40	$3.50
LTC1481IS8#TR	SO	8	I		$3.56
LTC1481IS8#TRPBF	SO	8	I		$3.56

LTC1481 数据手册及相关资料下载

数据手册 (英文) : LTC1481 - Ultra-Low Power RS485 Transceiver with Shutdown.PDF
设计要点 (英文) : DN102 - RS485 Transceivers Reduce Power and EMI.PDF
可靠性数据 : R113 Reliability Data .PDF
产品选型卡 : Ultra Rugged ±60V RS485 Transceivers.PDF
产品选型卡 : RS485 Quick Guide.PDF