LTC1321 LINER [Linear Technology], LTC1321 Datasheet - Page 17

• Manufacturer Part Number: LTC1321
• Description: RS232/EIA562/RS485 Transceivers
• Manufacturer: LINER [Linear Technology]

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 resistor at one end. The ground shield
is optional.
TYPICAL
A
PPLICATI
DR ENABLE
RX OUT
DR IN
5V
RX IN
1/2 LTC1322/LTC1335
20
22
O
6
U
Figure 21. Typical Cable Repeater for RS422 Interface
S
Figure 20. Typical Connection for RS422 Interface
21
5
3
4
2
100
100
1/2 LTC1322/LTC1335
2
3
RX OUT
3 2
1/2 LTC1322/LTC1335
22
6
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.
22
5V
20
100
21
5V
6
LTC1321/LTC1322/LTC1335
4
5
1/2 LTC1322/LTC1335
10
11
9
8
15
17
16
7
1321/22/35 F21
TX OUT
RX OUT
5V
DR ENABLE
DR IN
1321/22/35 F20
17