Turning Ideas Into Reality

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

Part Number SER7

Copyright © 2014 ABCircuits. Revised September 2014 Page 2 of 11

Example Circuits – RS-232 display

.1

LEFT COMMON

ANODE DISPLAY

U2= MAX3232 FOR 3V RS232

RS232

.1

VCC

VCC

U2= MAX232 FOR 5V RS232

GND

TXD

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

SER7

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

SEGRA

NC

SEGRC

SEGRE

SEGRG

NC

ADR2

SEGLF

SEGLD

SEGLB

SEGRDP

SEGRF

SEGRB

VSS

SEGLE

SEGRD

SEGLA

SEGLG

VDD

SEGLC

ADR0

JUST

DP

SEGLDP

SIN-

ADR1

ADR3

POL

RIGHT COMMON

ANODE DISPLAY

.1

VCC

DB9S

1

2

3

4

5

6

7

8

8

9

RXD

VCC

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

.1

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

VCC

Example Circuits – RS-485 display

U2

8

5

7

6

1

4

2

3

VCC

GND

-DO/-RI

DO / RI

RO

DI

-RE

DE

VCC

VCC

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

VCC

SER7

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

SEGRA

NC

SEGRC

SEGRE

SEGRG

NC

ADR2

SEGLF

SEGLD

SEGLB

SEGRDP

SEGRF

SEGRB

VSS

SEGLE

SEGRD

SEGLA

SEGLG

VDD

SEGLC

ADR0

JUST

DP

SEGLDP

SIN-

ADR1

ADR3

POL

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

LEFT COMMON

ANODE

DISPLAY

U2 75176 FOR 5V

VCC

U2 MAX3485 FOR 3.3V

RIGHT COMMON

ANODE DISPLAY

4.7K

VCC

RS485

Example Circuits – USB display

VCC

VCC

.1

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

SER7

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

SEGRA

NC

SEGRC

SEGRE

SEGRG

NC

ADR2

SEGLF

SEGLD

SEGLB

SEGRDP

SEGRF

SEGRB

VSS

SEGLE

SEGRD

SEGLA

SEGLG

VDD

SEGLC

ADR0

JUST

DP

SEGLDP

SIN-

ADR1

ADR3

POL

REFER TO FT232 DATASHEET

FOR MORE DETAILS

BEAD

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

LEFT COMMON

ANODE

DISPLAY

.01

RIGHT COMMON

ANODE DISPLAY

A

B

C

D

E

F

G

DP

G

F

E

D

C

B

A

COM

CASE

VCC

4.7

.1

USB

1

2

3

4

5

VCC