LTC1345 LINER [Linear Technology], LTC1345 Datasheet - Page 10

• Manufacturer Part Number: LTC1345
• Description: Single Supply V.35 Transceiver
• Manufacturer: LINER [Linear Technology]

APPLICATIONS
LTC1345
RS422/RS485 Applications
The receivers on the LTC1345 are ideal for RS422 and
RS485 applications. Using the test circuit in Figure 9, the
LTC1345 receivers are able to successfully reconstruct
the data stream with the common-mode voltage meeting
RS422 and RS485 requirements (12V to – 7V).
Figures 10 and 11 show that the LTC1345 receivers are
very capable of reconstructing data at rates up to 10Mbaud.
10
TTL
IN
LTC485
V
5V
CC1
GND
Figure 9 RS422/RS485 Receiver Interface
A
B
100
COMMON-MODE VOLTAGE
U
12V TO – 7V
INFORMATION
U
– +
W
100
BX
AX
LTC1345
V
5V
CC2
GND
U
LTC1345 • F09
OUT
TTL
RECEIVER
RECEIVER
RECEIVER
RECEIVER
5V/DIV
5V/DIV
INPUT
OUTPUT
INPUT
OUTPUT
5V/DIV
5V/DIV
A
B
B
A
Figure 10. – 7V Common Mode
Figure 11. 12V Common Mode
LTC1345 • F11
LTC1345 • F10
5
0
0V
–5V
–10V
15V
10V
5V
0V
5
0