2

Pinout

HIN232A (PDIP, SOIC)

TOP VIEW

Pin Descriptions

PIN

FUNCTION

Power Supply Input 5V

±10%.

V+

Internally generated positive supply (+10V nominal).

V-

Internally generated negative supply (-10V nominal).

GND

Ground Lead. Connect to 0V.

C1+

External capacitor (+ terminal) is connected to this lead.

C1-

External capacitor (- terminal) is connected to this lead.

C2+

External capacitor (+ terminal) is connected to this lead.

C2-

External capacitor (- terminal) is connected to this lead.

Transmitter Inputs. These leads accept TTL/CMOS levels. An internal 400k

Ω pull-up resistor to V

Transmitter Outputs. These are RS-232 levels (nominally

±10V).

Receiver Inputs. These inputs accept RS-232 input levels. An internal 5k

Ω pull-down resistor to GND is connected to each input.

Receiver Outputs. These are TTL/CMOS levels.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

C1+

V+

C1-

C2+

C2-

GND

V-

+5V

2

V+

16

T1

T2

11

10

14

7

+5V

400k

Ω

+5V

400k

Ω

R1

13

12

5k

Ω

R2

8

9

5k

Ω

+10V TO -10V

VOLTAGE INVERTER

0.1

µF

6

V-

C2+

C2-

+

0.1

µF

4

5

+5V TO 10V

VOLTAGE INVERTER

C1+

C1-

+

0.1

µF

1

3

+

0.1

µF

+

GND

15

HIN232A