12

LTC1344A

©LINEAR TECHNOLOGY CORPORATION 1998

1344af, sn1344a LT/TP 0898 4K • PRINTED IN USA

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

Figure 13 shows a typical application for the LTC1344A

using the LTC1543 mixed mode transceiver chip to gener-

ate the clock and data signals for a serial interface. The

charge pump and the select lines M0, M1, M2 and

RELATED PARTS

PART NUMBER

DESCRIPTION

COMMENTS

LTC1334

Single Supply RS232/RS485 Transceiver

2 RS485 Dr/Rx or 4 RS232 Dr/Rx Pairs

LTC1343

Multiprotocol Serial Transceiver

Software Selectable Mulitprotocol Interface

LTC1345

Single Supply V.35 Transceiver

3 Dr/3 Rx for Data and CLK Signals

LTC1346A

Dual Supply V.35 Transceiver

3 Dr/3 Rx for Data and CLK Signals

LTC1543

Multiprotocol Serial Transceiver

Software-Selectable Transceiver for Data and CLK Signals

LTC1544

Multiprotocol Serial Transceiver

Software-Selectable Transceiver for Control Signals

DCE/DTE are shared by both chips. Each driver output and

receiver input is connected to one of the LTC1344A

termination ports. Each electrical protocol can then be

chosen using the digital select lines.

TYPICAL APPLICATIO

Figure 13. Typical Application Using the LTC1344A

LTC1543

24

1344 F13

426

5

6

7

8

9

10

23

22

21

20

19

18

17

16

15

M0

M1

M2

DCE/DTE

11

12

13

14

LTC1344A

14

21

22

23

24

1

2

5

3

8

11

12

13

4

6

7

9

10

16

15

18

17

19

20

DTE

DCE

M2

M1

M0

C2

3.3

µF

C1

1

µF

100pF

100pF

100pF

LATCH

DCE/DTE

M2

M1

M0

DCE/DTE