Turning Ideas Into Reality

ABCircuits www.abcircuits.com POB 123 New Hill NC 27562 (919) 290-7104

Part Number SIO7

Copyright © 2014 ABCircuits. Revised September 2014 Page 2 of 7

Example Circuits

OUTPUT A3

INPUT A4

OUTPUT A2

+3.3

INPUT A0

INPUT A1

OUTPUT A1

OUTPUT A6

7 BITS INPUT/OUTPUT ETHERNET

LANTRONIX

XPORT

1

2

3

4

5

6

7

8

GND

+3.3

-POR

OUT

IN

CP1

CP2

CP3

INPUT A3

OUTPUT A4

INPUT A2

INPUT A5

OUTPUT A5

SIO7

11

5

12

13

14

15

1

2

3

4

6

7

9

10

18

8

16

19

20

17

IA0

NC

IA2

IA4

IA6

NC

SIN-

OA5

OA3

OA1

SOUT-

IA5

IA1

VSS

OA4

IA3

OA0

OA6

VDD

OA2

OUTPUT A0

INPUT A6

+3.3

INPUT A0

INPUT A5

OUTPUT A2

TXD

OUTPUT A3

INPUT A2

VCC

OUTPUT A5

U2= MAX3232 FOR 3V RS232

OUTPUT A1

VCC

INPUT A6

J1

DB9S

1

2

3

4

5

6

7

8

8

9

U2= MAX232 FOR 5V RS232

GND

RS232

C8

.1

INPUT A3

OUTPUT A0

VCC

C7

.1

C6

.1

7 BITS INPUT/OUTPUT RS-232

OUTPUT A6

U2

SEE NOTES

1

3

4

5

2

6

11

14

10

7

12

13

9

8

C1+

C1-

C2+

C2-

V+

V-

T1in

T1out

T2in

T2out

R1out

R1in

R2out

R2in

OUTPUT A4

SIO7

11

5

12

13

14

15

1

2

3

4

6

7

9

10

18

8

16

19

20

17

IA0

NC

IA2

IA4

IA6

NC

SIN-

OA5

OA3

OA1

SOUT-

IA5

IA1

VSS

OA4

IA3

OA0

OA6

VDD

OA2

RXD

INPUT A4

INPUT A1

C5

.1