Datasheet > LTC1482

LTC1482

更新时间： 2024-11-14 14:58:23

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	217K
描述
具载波检测和接收器故障保险功能的低功率 RS485 收发器

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LTC1482 数据手册

LTC1482

Low Power RS485 Transceiver

with Carrier Detect and

Receiver Fail-Safe

DESCRIPTIO

FEATURES

The LTC^®1482 is a low power RS485 compatible trans-

ceiver that offers an active low carrier detect output. The

open-drain carrier detect pin allows several transceivers

to share the same carrier detect line and can be used to

detect the insertion or removal of a driven RS485/RS422

cable.

■

No Damage or Latchup to

Model), IEC1000-4-2 Level 4 (

15kV (Human Body

8kV) Contact and

Level 3 (±8kV) Air Discharge

■

Active Low Carrier Detect Output

Guaranteed High Receiver Output State for

Floating, Shorted or Terminated Inputs with

No Signal Present

Enhanced ESD protection allows the LTC1482 to with-

stand ±15kV (human body model), IEC-1000-4-2 level 4

(±8kV) contact and level 3 (±8kV) air discharge ESD

without latchup or damage.

■

Drives Low Cost Residential Telephone Wires

Low Power: I_CC= 700µA Max with Driver Disabled

I_CC= 900µA Max in Driver Mode Without Load

20µA Max Quiescent Current in Shutdown Mode

Single 5V Supply

–7V to 12V Common Mode Range Permits ±7V

Ground Difference Between Devices on the Data Line

Maximum Data Rate of 4Mbps

The LTC1482 receiver stays alive at all times except in

shutdown. The supply current is a maximum of 700µA

and 900µA when the driver is disabled and enabled

respectively. In shutdown, the quiescent current of the

LTC1482 drops to a maximum of 20µA.

■

Power Up/Down Glitch-Free Driver Outputs

Up to 32 Transceivers on the Bus

Available in 8-Lead MSOP, PDIP and SO Packages

When the driver is disabled or the LTC1482 is in shut-

down, the driver outputs are three-stated and remain in

a high impedance state over the RS485 common mode

range.

APPLICATIO S

Excessivepowerdissipationcausedbybuscontentionor

faults is prevented by a thermal shutdown circuit, which

forces the driver outputs into a high impedance state.

■

Battery-Powered RS485/RS422 Applications

■

Low Power RS485/RS422 Transceiver

■

Level Translator

The LTC1482 is fully specified over the commercial and

industrial temperature ranges and is available in 8-lead

MSOP, PDIP and SO packages.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

Carrier Detect Output (2000 Foot STP Cable)

RS485 Interface

DE1

LTC1482

RO2

RO1

CD1

CC2

CC1

CD2

120Ω

GND1

120Ω

DE2

DE1

DI2/SHDN2

DI1/SHDN1

GND2

CD2

1482 TA01

DE1 ↑↓

DE2 = 0

Dl1 = V_CC

Dl2 = V_CC

1482 TA01a

1k PULL-UP AT CD

12 3 4 5 6 7...16

中文翻译

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与LTC1482相关器件

型号	品牌	获取价格	描述	数据表
LTC1482C	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482CMS8	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482CMS8#TR	Linear	获取价格	LTC1482 - Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe; Package:
LTC1482CN8	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482CS8	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482CS8#PBF	Linear	获取价格	暂无描述
LTC1482CS8#TR	Linear	获取价格	LTC1482 - Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe; Package:
LTC1482I	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482IN8	Linear	获取价格	Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe
LTC1482IN8#PBF	Linear	获取价格	LTC1482 - Low Power RS485 Transceiver with Carrier Detect and Receiver Fail-Safe; Package:

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