DESIGN INFORMATION LTC1546 Multiprotocol Chip Simplifies
NET1-, NET2-and TBR2-Compliant
Serial Interfaces
by Dan Eddleman
ports the V.28 (RS232), V.35, V.36,
X.21, RS449, EIA530 and EIA530-A
protocols, including all of the necessary cable termination. With these
two chips, the physical layer of a
NET1-, NET2-and TBR2-compliant C3
1ВµF VCC
5V C1
1ВµF 3 28 1 27
26 CHARGE
PUMP 2
4 25 C5
1ВµF LTC1546
5 DTE_TXD/DCE_RXD D1 6 DTE_SCTE/DCE_RXC T D2 T C2
1ВµF + The LTC1546 multiprotocol transceiver simplifies network interface
design and frees up valuable PC board
real estate. Operating from a single
5V supply, the LTC1546 and LTC1544
form a complete, software-selectable
DTE or DCE interface port that sup-C4 …