MAX1480 datasheet(14/21 Pages) MAXIM

Part #	MAX1480

Description	Complete, Isolated RS-485/RS-422 Data Interface

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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14 / 21 page

Complete, Isolated RS-485/RS-422

Data Interface

14

______________________________________________________________________________________

Figure 4. Driver DC Test Load

R

VOD

VOC

D

Figure 5. Driver/Receiver Timing Test Circuit

DI

´

CL1

(DE

´)

CL2

RO (RO)*

RDIFF

VID

ISOLATION BARRIER

( ) ARE FOR

THE MAX1480A/B/C

* OPTOCOUPLER

OUTPUTS. SEE FIGURES 1

AND 2 FOR DETAILED BLOCK

DIAGRAM AND TYPICAL

APPLICATION CIRCUIT.

ISOLATION BARRIER

R

D

Test Circuits

28

27

26

25

24

23

22

21

1

2

3

4

5

6

7

8

AC1

VIN

5V

SHUTDOWN

Si943304

DI

GND

DE

R1

R2

R3

P

RO

AC2

ISO VCC1

B

D2

D1

VCC2

VCC1

ISO RO DRV

A

ISO DI IN

ISO DE IN

VCC3

SD

FS

GND1

20

19

18

17

9

10

11

12

ISO COM1

ISO DI DRV

ISO VCC2

ISO DE DRV

GND2

DE

VCC4

DI

16

15

13

14

ISO COM2

ISO RO LED

VCC5

RO

MAX1487

MAX845

ISOLATION BARRIER

MAX1480A

Figure 3. MAX1480A Low-Power Shutdown Mode

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Manufacturer	Part #	Datasheet	Description
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MAX1480 Datasheet(PDF) 14 Page - Maxim Integrated Products

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