LTC1343 View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1343 Datasheet PDF : 28 Pages
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LTC1343
APPLICATIONS INFORMATION
Overview
The LTC1343 is a 4-driver/4-receiver multiprotocol trans-
ceiver that operates from a single 5V supply. Two LTC1343s
form the core of a complete software-selectable DTE or
DCE interface port that supports the RS232, RS449,
EIA-530, EIA-530-A, V.35, V.36 or X.21 protocols. Cable
termination may be implemented using the LTC1344
software-selectable cable termination chip or by using
existing discrete designs.
A complete DCE-to-DTE interface operating in EIA-530
mode is shown in Figure 10. The first LTC1343 of each port
is used to generate the clock and data signals along with
LL (Local Loop-back) and TM (Test Mode). The second
LTC1343 is used to generate the control signals along with
SERIAL
CONTROLLER
LL
TXD
DTE
LTC1343
D1
D2
LTC1344
LL
TXD
LTC1344
103Ω
DCE
LTC1343
R4
R3
SERIAL
CONTROLLER
LL
TXD
SCTE
D3
SCTE
103Ω
R2
SCTE
D4
R1
TXC
R1
103Ω
TXC
D4
TXC
RXC
R2
103Ω
RXC
D3
RXC
RXD
R3
103Ω
RXD
TM
R4
TM
D2
RXD
D1
TM
LTC1343
RL
RL
D1
RTS
D2
RTS
DTR
D3
DTR
D4
LTC1343
R4
RL
R3
RTS
R2
DTR
R1
DCD
R1
DCD
DSR
R2
DSR
D4
DCD
D3
DSR
CTS
R3
CTS
RI
RI
R4
D2
CTS
D1
RI
1343 F10
Figure 10. Complete Multiprotocol Interface in EIA-530 Mode
9
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