LT1381IS 查看數據表（PDF） - Linear Technology

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LT1381IS

Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors

Linear Technology 

LT1381

U

TYPICAL APPLICATIO S

VIN = 5V

±10% FROM

SYSTEM

+

100µF

47Ω

ILIM

VIN

SW1

LT1111

FB

GND SW2

Isolated RS232 Driver/Receiver

CTX20-1 1N5818

1:1

L1

20µH

1Ω

+

100µF

1N5818

13.7V

10k +

1µF

1k

LT1121-5

0.1µF

+

10µF

5V ±10%

ISOLATOR OUTPUT

(DATA TO SYSTEM)

VOUT

VCC

OS

IN

LTC1145

GND2 GND1

ISOLATOR INPUT VIN

(DATA FROM SYSTEM)

VCC

IN

OS

LTC1145

GND1 GND2

ISOLATION BARRIER

1

+

0.1µF

3

4

+

0.1µF

5

LT1381

RS232

16 VCC

2

+

0.1µF

6

+

0.1µF

9

11

FLOATING GROUND

SYSTEM GROUND

RX

DX

8

RS232 INPUT

14

RS232 OUTPUT

15

LT1381 • TA03

Data Transmission Across Isolation Barrier

ISOLATOR

INPUT

RS232

OUTPUT

6

RS232

INPUT

ISOLATOR

OUTPUT

1381 TA04

1381 TA05

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