GD75232

MULTIPLE RS-232 DRIVERS AND RECEIVERS

SLLS206C – MAY 1995 – REVISED JULY 1998

2

POST OFFICE BOX 655303

9

8

7

6

5

4

3

2

RY5

DA3

RY4

DA2

DA1

RY3

RY2

RY1

RA5

DY3

RA4

DY2

DY1

RA3

RA2

RA1

12

13

14

15

16

17

18

19

† This symbol is in accordance with ANSI/IEEE Std 91-1984

and IEC Publication 617-12.

logic diagram (positive logic)

RY1

RA1

RY2

RA2

RY3

RA3

DA1

DY1

DA2

DY2

RY4

RA4

DA3

DY3

RY5

RA5

2

3

4

5

6

7

8

9

19

18

12

13

14

15

16

17

schematic (each driver)

DYx Output

320

Ω

68.5

Ω

3.3 k

Ω

10.4 k

Ω

To Other Drivers

VSS

To Other

Drivers

GND

4.2 k

Ω

Input DAx

VDD

75.8

Ω

9.4 k

Ω

11.6 k

Ω

To Other Drivers

Resistor values shown are nominal.