17

LTC1321/LTC1322/LTC1335

S

APPLICATI

TYPICAL

A typical RS422 connection shown in Figure 20 allows one

driver and ten receivers on a twisted pair of wires termi-

nated with a 100

Ω resistor at one end. The ground shield

is optional.

A typical twisted pair line repeater is shown in Figure 21.

As data transmission rate drops with increased cable

length, repeater can be inserted to improve transmission

rate or to transmit beyond 4000 feet limit.

Figure 20. Typical Connection for RS422 Interface

1/2 LTC1322/LTC1335

TX OUT

RX IN

1321/22/35 F21

100

Ω

2

3

4

6

21

20

22

5

5V

Figure 21. Typical Cable Repeater for RS422 Interface

1/2 LTC1322/LTC1335

1/2 LTC1322/LTC1335

1/2 LTC1322/LTC1335

1321/22/35 F20

100

Ω

20

21

6

22

7

15

16

17

5V

5V

RX OUT

RX OUT

RX OUT

DR ENABLE

DR ENABLE

DR IN

DR IN

3 2

6

5V

2

3

4

5

9

8

11

22

10

100

Ω