Turning Ideas Into Reality

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

Part Number SIO8

Copyright © 2014 ABCircuits. Revised September 2014 Page 3 of 8

INPUT A0

INPUT A6

NOTE: MODE PIN MUST BE OPEN FOR RS-485

INPUT A5

SIO8

15

9

16

17

18

19

3

6

7

8

10

11

13

14

22

12

20

23

28

21

4

1

2

5

24

25

26

27

IA0

NC

IA2

IA4

IA6

NC

SPD

OA5

OA3

OA1

IA7

IA5

IA1

VSS

OA4

IA3

OA0

OA6

VDD

OA2

SOUT-

NC

NC

OA7

SIN-

MODE

RXP

TXE

VCC

VCC

OUTPUT A2

U2

8

5

7

6

1

4

2

3

VCC

GND

-DO/-RI

DO / RI

RO

DI

-RE

DE

INPUT A1

OUTPUT A3

OUTPUT A1

U2 75176 FOR 5V

4.7K

8 BITS INPUT/OUTPUT RS-485

VCC

OUTPUT A5

INPUT A7

INPUT A4

INPUT A2

INPUT A3

OUTPUT A4

OUTPUT A0

RS485

OUTPUT A6

OUTPUT A7

U2 MAX3485 FOR 3.3V

OUTPUT A0

OUTPUT A4

INPUT A0

.1

OUTPUT A7

USB

1

2

3

4

5

CASE

INPUT A2

INPUT A5

SIO8

15

9

16

17

18

19

3

6

7

8

10

11

13

14

22

12

20

23

28

21

4

1

2

5

24

25

26

27

IA0

NC

IA2

IA4

IA6

NC

SPD

OA5

OA3

OA1

IA7

IA5

IA1

VSS

OA4

IA3

OA0

OA6

VDD

OA2

SOUT-

NC

NC

OA7

SIN-

MODE

RXP

TXE

REFER TO FT232 DATASHEET

FOR MORE DETAILS

INPUT A7

OUTPUT A3

OUTPUT A1

4.7

OUTPUT A5

8 BITS INPUT/OUTPUT USB

.01

OUTPUT A6

INPUT A4

INPUT A3

OUTPUT A2

.1

INPUT A1

BEAD

INPUT A6

FT232-SSOP

14

13

22

23

11

2

5

1

19

16

15

8

24

27

28

3

6

9

10

12

CBUS3

CBUS2

CBUS1

CBUS0

-CTS

DTR

RXD

TXD

-RST

USBM

USBP

NC

NC

OSCI

OSCO

RTS

RI

DSR

DCD

CBUS4

VCC

VCC

Connection Diagram

SIO8

15

9

16

17

18

19

3

6

7

8

10

11

13

14

22

12

20

23

28

21

4

1

2

5

24

25

26

27

IA0

NC

IA2

IA4

IA6

NC

SPD

OA5

OA3

OA1

IA7

IA5

IA1

VSS

OA4

IA3

OA0

OA6

VDD

OA2

SOUT-

NC

NC

OA7

SIN-

MODE

RXP

TXE