1

TM

June 2001

ICL232

+5V Powered, Dual RS-232 Transmitter/Receiver

File Number

3020.6

Features

• Meets All RS-232C and V.28 Specifications

• Requires Only Single +5V Power Supply

• Onboard Voltage Doubler/Inverter

• Low Power Consumption

•2 Drivers

-

±9V Output Swing for +5V lnput

-300

Ω Power-off Source Impedance

- Output Current Limiting

- TTL/CMOS Compatible

-30V/

µs Maximum Slew Rate

• 2 Receivers

-

±30V Input Voltage Range

-3k

Ω to 7kΩ Input Impedance

- 0.5V Hysteresis to Improve Noise Rejection

• All Critical Parameters are Guaranteed Over the Entire

Commercial, Industrial and Military Temperature Ranges

Applications

• Any System Requiring RS-232 Communications Port

- Computer - Portable and Mainframe

- Peripheral - Printers and Terminals

- Portable Instrumentation

- Modems

• Dataloggers

Description

The ICL232 is a dual RS-232 transmitter/receiver interface

circuit that meets all ElA RS-232C and V.28 specifications. It

requires a single +5V power supply, and features two

onboard charge pump voltage converters which generate

+10V and -10V supplies from the 5V supply.

The drivers feature true TTL/CMOS input compatibility, slew-

rate-limited output, and 300

Ω power-off source impedance.

The receivers can handle up to +30V, and have a 3k

Ω to 7kΩ

input impedance. The receivers also have hysteresis to

improve noise rejection.

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

ICL232CPE

0 to 70

16 Ld PDIP

E16.3

ICL232CBE

0 to 70

16 Ld SOIC

M16.3

ICL232lPE

-40 to 85

16 Ld PDIP

E16.3

ICL232lBE

-40 to 85

16 Ld SOIC

M16.3

ICL232MJE

-55 to 125

16 Ld CERDIP

F16.3

Pinout

ICL232 (PDIP, CERDIP, SOIC)

TOP VIEW

Functional Diagram

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

C1+

V+

C1-

C2+

C2-

V-

GND

+5V

2

16

11

10

14

7

13

12

8

9

1

µF

6

+

1

µF

4

5

+

1

µF

1

3

+

1

µF

+

+

1.0

µF

15

V+

T1

T2

+5V

400k

Ω

+5V

400k

Ω

R1

5k

Ω

R2

5k

Ω

+10V TO -10V

VOLTAGE INVERTER

V-

C2+

C2-

+5V TO 10V

VOLTAGE INVERTER

C1+

C1-

itle

L23

b-

t

V

w-

d,

al

-

2

ns-

t-

/Rec

er)

utho

)

ey-

rds

ter-

rpo-

ion)

re-

r()

OCI

O

f-

rk

ge-

de

se-

t-

es

OC-

EW

f-

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143