Programmable DTE/DCE,

+5V RS-232 Transceiver

10

______________________________________________________________________________________

TRA

RTA

TRB

RTB

TRC

RTC

RDTC

RRE

3

2

7

8

4

6

1

9

TxD

RxD

RTS

CTS

DTR

DSR

DCD

RI

5

6

25

23

24

22

7

8

MAX214

HI-Z

SHDN

DTE/DCE

MAX214

HI-Z

SHDN

DTE/DCE

TA

RA

TB

RB

TC

RC

RDC

RE

9

10

20

19

18

17

11

12

HIGH

HIGH

5

6

25

23

24

22

7

8

TA

RA

TB

RB

TC

RC

RDC

RE

TRA

RTA

TRB

RTB

TRC

RTC

RDTC

RRE

PC1

(DTE MODE)

STANDARD

RS-232

CABLE

PC2

(DCE MODE)

DB-9 CONNECTORS

21

26

3

21

26

3

9

10

20

19

18

17

11

12

3

2

7

8

4

6

1

9

POWER CONNECTIONS OMITTED FOR CLARITY.

Figure 4. Typical Application Circuit Showing 2 PCs with Both DTE and DCE Operation