LTC1322CN datasheet(10/20 Pages) LINER

Part #	LTC1322CN

Description	RS232/EIA562/RS485 Transceivers

Download	20 Pages

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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10

LTC1321/LTC1322/LTC1335

LTC1321 Interface Configuration With Loopback

LTC1322/LTC1335 Interface Configuration Without Loopback

RA1

PORT 1 = EIA562 MODE

PORT 2 = EIA562 MODE

A2

B2

23

DY2

17

14

RB2

PORT 1 = RS485 MODE

PORT 2 = RS485 MODE

DY1

5

6

VCC

ON

DE1

B1

A1

Z1

Y1

PORT 1 = RS485 MODE

PORT 2 = EIA562 MODE

DZ2

Y2

Z2

**SEL1

SEL2

24

3

4

2

7

8

9

10

11

22

21

20

LB

18

19

16

GND

VEE

12

13

RA2

15

PORT 1 = EIA562 MODE

PORT 2 = RS485 MODE

1

*VDD/OE

*

RB1

RA1

VCC

DZ1

DY1

ON

Z1

A1

B1

DY2

DZ2

Z2

Y2

A2

SEL1

SEL2

23

24

1

4

2

3

6

7

8

9

21

22

19

LB

18

17

GND

VEE

10

B2

11

15

14

13

RA2

RB2

16

Y1

5

20

*VDD/OE

*

12

RB1

RA1

VCC

DZ1

DY1

ON

Z1

A1

B1

DY2

DE2

Z2

Y2

A2

SEL1

**SEL2

23

24

1

4

2

3

6

7

8

9

21

22

19

LB

18

17

GND

VEE

10

B2

11

15

14

13

RA2

RB2

16

Y1

5

20

*VDD/OE

*

12

1322/35 BD01

RA1

VCC

DE1

DY1

ON

Z1

A1

B1

DY2

DE2

Z2

Y2

A2

**SEL2

23

24

1

4

2

3

6

7

8

9

21

22

19

LB

18

17

GND

VEE

10

B2

11

15

14

13

RA2

RB2

16

Y1

5

20

*VDD/OE

*

**SEL1

RB1

FOR LTC1322 ONLY, PIN 1 IS VDD, AND OE IS ALWAYS ENABLED.

FOR LTC1335, PIN 1 IS OE, AND VDD IS CONNECTED TO VCC.

SEL1/SEL2 = VCC.

*

**

1321 BD02

RA1

VCC

VDD

DY1

ON

Y1

PORT 1 = EIA562 MODE

PORT 2 = EIA562 MODE

DY2

Y2

SEL1

SEL2

24

22

1

5

6

7

8

20

19

LB

18

17

GND

VEE

12

13

RA2

15

PORT 1 = RS485 MODE

PORT 2 = RS485 MODE

DY1

6

RA1

VCC

VDD

DE1

ON

Z1

Y1

PORT 1 = RS485 MODE

PORT 2 = EIA562 MODE

DY2

Y2

*SEL1

*SEL1/SEL2 = VCC

SEL2

24

22

1

5

4

7

8

21

20

LB

18

19

17

GND

VEE

12

13

RA2

15

RA1

VCC

VDD

DY1

ON

DE2

Y1

PORT 1 = EIA562 MODE

PORT 2 = RS485 MODE

DY2

SEL1

24

22

1

5

6

7

8

9

20

19

LB

18

17

16

12

13

15

Y2

Z2

*SEL2

GND

VEE

RA2

DE2

DY2

7

8

9

17

16

12

13

15

Y2

Z2

*SEL2

GND

VEE

RA2

DY1

6

RA1

VCC

VDD

DE1

Z1

Y1

*SEL1

24

22

1

5

4

21

20

LB

19

ON

18

BLOCK DIAGRA SM

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