LTC1544 Datasheet, PDF (1/20 Pages) Linear Technology – Software-Selectable Multiprotocol Transceiver

LTC1544
Software-Selectable
Multiprotocol Transceiver
FEATURES
s _{Software-Selectable Transceiver Supports:}
RS232, RS449, EIA530, EIA530-A, V.35, V.36, X.21
s _{TUV/Detecon Inc. Certified NET1 and NET2}
Compliant (Test Report No. NET2/102201/97)
s _{TBR2 Compliant (Test Report No. CTR2/022701/98)}
s _{Software-Selectable Cable Termination Using}
the LTC1344A
s _{Complete DTE or DCE Port with LTC1543, LTC1344A}
or LTC1546 with Integrated Termination
s _{Operates from Single 5V Supply with LTC1543}
U
APPLICATIO S
s _{Data Networking}
s _{CSU and DSU}
s _{Data Routers}
DESCRIPTIO
The LTC^®1544 is a 4-driver/4-receiver multiprotocol trans-
ceiver. The LTC1544 and LTC1543 form the core of a
complete software-selectable DTE or DCE interface port that
supports the RS232, RS449, EIA530, EIA530-A, V.35, V.36
or X.21 protocols. Cable termination for the LTC1543 may be
implemented using the LTC1344A software-selectable cable
termination chip or by using existing discrete designs. The
LTC1546 includes software-selectable cable termination on-
chip.
The LTC1544 runs from a 5V supply and the charge pump on
the LTC1543 or LTC1546. The part is available in a 28-lead
SSOP surface mount package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
LL CTS DSR
DTE or DCE Multiprotocol Serial Interface with DB-25 Connector
DCD DTR RTS
RXD RXC
TXC SCTE TXD
LTC1544
D4
R4 R3 R2 R1
D3 D2 D1
LTC1543
R3 R2 R1
D3 D2 D1
LTC1344A
18 13 5 10 8
22 6 23 20 19 4 1 7 16 3 9 17
12 15 11 24 14 2
DB-25 CONNECTOR
1544 TA01
1