LTC2845 Datasheet, PDF (1/20 Pages) Linear Technology – 3.3V Software-Selectable Multiprotocol Transceiver

LTC2845
3.3V Software-Selectable
Multiprotocol Transceiver
FEATURES
s _{Software-Selectable Transceiver Supports:}
RS232, RS449, EIA530, EIA530-A, V.35, V.36, X.21
s _{Operates from Single 3.3V Supply with LTC2846 or}
a Single 5V Supply with 3.3V Logic with LTC2847
s _{TUV Rheinland of North America Inc. Certified NET1,}
NET2 and TBR2 Compliant,
Report No.: TBR2/050101/02
s _{Complete DTE or DCE Port with LTC2846 or LTC2847}
s _{Available in a 36-Lead Narrow (0.209") SSOP and}
38-Lead (7mm x 5mm) QFN package
U
APPLICATIO S
s _{Data Networking}
s _{CSU and DSU}
s _{Data Routers}
DESCRIPTIO
The LTC^®2845 is a 5-driver/5-receiver multiprotocol trans-
ceiver. The LTC2845 and LTC2846 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.
The LTC2845 operates from a 3.3V supply and supplies
provided by the LTC2846. This part is available in a 36-lead
SSOP and 38-lead (7mm x 5mm) QFN package. The LTC2845
and LTC2847 in QFN packages offer the smallest multiprotocol
serial port available.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
DTE or DCE Multiprotocol Serial Interface with DB-25 Connector
RL TM RI LL CTS DSR
DCD DTR RTS
RXD
RXC
TXC SCTE TXD
LTC2845
D5
D4
R5 R4
R3 R2 R1
D3 D2 D1
LTC2846
D3
D2
D1
R3
R2
R1
T
T
T
T
T
21 25 * 18 13 5 22 6
10 8 23 20 19 4 1 7 16 3 9 17
DB-25 CONNECTOR
12 15 11 24 14 2
*OPTIONAL
2845 TA01
sn2845 2845fs
1