LTC1480 3.3V Ultra-Low Power RS485 Transceiver

The LTC®1480 is an ultralow power differential line transceiver which provides full RS485 compatibility while operating from a single 3.3V supply. It is designed for data transmission standard RS485 applications with extended common mode range (12V to -7V). It also meets the requirements of RS422 and features high speed operation up to 2.5Mb/s. The CMOS design offers significant power savings without sacrificing ruggedness against overload or ESD damage. Typical quiescent current is only 300µA while operating and 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 LTC1480 is fully specified over the commercial and extended industrial temperature range. The LTC1480 is available in 8-pin SO and DIP packages

产品特点 Features

True RS485 from a Single 3.3V Supply

Low Power: ICC = 500µA Max with Driver Disabled

ICC = 600µA Max with Driver Enabled, No Load

1µA Quiescent in Shutdown Mode

-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

50ns Typical Driver Propagation Delays with 10ns Skew

Pin Compatible with the LTC485

Available in 8-Lead DIP and SO Packages

应用

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

典型应用图

参数

LTC1480 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) *
LTC1480CN8	PDIP	8	C	$3.15	$2.55
LTC1480CN8#PBF	PDIP	8	C	$3.15	$2.55
LTC1480CS8	SO	8	C	$3.40	$2.70
LTC1480CS8#PBF	SO	8	C	$3.40	$2.70
LTC1480CS8#TR	SO	8	C		$2.76
LTC1480CS8#TRPBF	SO	8	C		$2.76
LTC1480IN8	PDIP	8	I	$3.85	$3.00
LTC1480IN8#PBF	PDIP	8	I	$3.85	$3.00
LTC1480IS8	SO	8	I	$4.40	$3.50
LTC1480IS8#PBF	SO	8	I	$4.40	$3.50
LTC1480IS8#TR	SO	8	I		$3.56
LTC1480IS8#TRPBF	SO	8	I		$3.56

LTC1480 数据手册及相关资料下载

数据手册 (英文) : LTC1480 - 3.3V Ultra-Low Power RS485 Transceiver.PDF
设计要点 (英文) : DN161 - The Smart Rock.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