LTC490IS8#TRPBF

更新时间： 2024-11-06 13:09:51

品牌	Logo	应用领域
凌特 - Linear		线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数	文件大小	规格书
12页	165K
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中文翻译

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数据手册

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LTC490IS8#TRPBF 数据手册

LTC490

Differential Driver and

Receiver Pair

FEATURES

DESCRIPTIO

The LTC^®490 is a low power differential bus/line trans-

ceiverdesignedformultipointdatatransmissionstandard

RS485 applications with extended common mode range

(12V to –7V). It also meets the requirements of RS422.

■

Low Power: I_CC= 300µA Typical

■

Designed for RS485 or RS422 Applications

■

Single 5V Supply

■

–7V to 12V Bus Common Mode Range

Permits ±7V Ground Difference Between Devices

TheCMOSdesignofferssignificantpowersavingsoverits

bipolarcounterpartwithoutsacrificingruggednessagainst

overload or ESD damage.

on the Bus

Thermal Shutdown Protection

■

Power-Up/-Down Glitch-Free Driver Outputs Permit

Live Insertion or Removal of Package

Driver Maintains High Impedance with the

Power Off

Combined Impedance of a Driver Output and

Receiver Allows up to 32 Transceivers on the Bus

70mV Typical Input Hysteresis

28ns Typical Driver Propagation Delays with

5ns Skew for 2.5MB Operation

Pin Compatible with the SN75179

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.

■

Both AC and DC specifications are guaranteed from 0°C to

70°C and 4.75V to 5.25V supply voltage range.

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

■

^{Available in 8-Le}U^{ad PDIP and SO Packages}

APPLICATIO S

■

Low Power RS485/RS422 Transceiver

■

Level Translator

TYPICAL APPLICATIO

LTC490

120Ω

RECEIVER

DRIVER

4000 FT BELDEN 9841

120Ω

DRIVER

RECEIVER

LTC490 • TA01

490fb

12 3 4 5 6 7...12

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