LTC1334 LINER [Linear Technology], LTC1334 Datasheet - Page 13

• Manufacturer Part Number: LTC1334
• Description: Single 5V RS232/RS485 Multiprotocol Transceiver
• Manufacturer: LINER [Linear Technology]

A
A typical RS422 connection (Figure 15) allows one driver
and ten receivers on a twisted pair of wires terminated with
a 100 resistor at one end.
A typical twisted-pair line repeater is shown in Figure 16.
As data transmission rate drops with increased cable
length, repeaters can be inserted to improve transmission
rate or to transmit beyond the RS422 4000-foot limit.
The LTC1334 can be used to translate RS232 to RS422
interface levels or vice versa as shown in Figure 17. One
RX IN
PPLICATI
Figure 16. Typical Cable Repeater for RS422 Interface
RS232/EIA562
100
DR OUT
O
RX IN
U
4
5
S
DR ENABLE
13
11
RX OUT
I FOR ATIO
DR IN
U
1/2 LTC1334
5V
9
24
LTC1334
22
Figure 18. Typical Cable Extension for RS232/EIA562 Interface
24
8
19 24
17
1/2 LTC1334
22
22
W
Figure 15. Typical Connection for RS422 Interface
23
23
5V
23
5V
8
6
7
4
5
6
7
8
6
5
7
4
U
100
100
LTC1334 • F16
1/2 LTC1334
TX OUT
RS422
RX OUT
5 4
24
port is configured as an RS232 transceiver and the other
as an RS485 transceiver.
Using two LTC1334s as level translators, the RS232/
EIA562 interface distance can be extended to 4000 feet
with twisted-pair wires (Figure 18).
AppleTalk
Two AppleTalk applications are shown in Figure 19 and 20
with the LTC1323 and the LTC1334.
AppleTalk and LocalTalk are registered trademarks of Apple Computer, Inc.
8
100
RS232/EIA562
Figure 17. Typical RS232/EIA562 to RS422 Level Translator
5V
TX OUT
RX IN
®
/LocalTalk
4
5
6
7
13
11
100
5V
8
9
23
LTC1334
12
11
10
13
LTC1334
1/2 LTC1334
®
17
19 24
24
22
Applications
LTC1334 • F15
22
19
17
23
17
19
9
18
8
5V
8
13
11
RX OUT
5V
DR ENABLE
DR IN
6
7
4
5
DR OUT
RS232/EIA562
RX IN
100
LTC1334 • F18
LTC1334
LTC1334 • F17
RX IN
13
TX OUT
RS422