S E M I C O N D U C T O R
ICL232
+5V Powered, Dual RS-232 Transmitter/Receiver
August 1997
Features
Description
• Meets All RS-232C and V.28 Specifications
• Requires Only Single +5V Power Supply
• Onboard Voltage Doubler/Inverter
• Low Power Consumption
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.
• 2 Drivers
The drivers feature true TTL/CMOS input compatibility, slew-
rate-limited output, and 300Ω power-off source impedance.
The receivers can handle up to +30V, and have a 3kΩ to 7kΩ
input impedance. The receivers also have hysteresis to
improve noise rejection.
- ±9V Output Swing for +5V lnput
- 300Ω Power-off Source Impedance
- Output Current Limiting
- TTL/CMOS Compatible
- 30V/µs Maximum Slew Rate
Ordering Information
• 2 Receivers
- ±30V Input Voltage Range
- 3kΩ to 7kΩ Input Impedance
- 0.5V Hysteresis to Improve Noise Rejection
TEMP.
PKG.
NO.
o
PART NUMBER RANGE ( C)
PACKAGE
16 Ld PDIP
ICL232CPE
ICL232CBE
ICL232lPE
ICL232lJE
ICL232lBE
ICL232MJE
0 to 70
0 to 70
E16.3
• All Critical Parameters are Guaranteed Over the Entire
Commercial, Industrial and Military Temperature Ranges
16 Ld SOIC
16 Ld PDIP
M16.3
E16.3
F16.3
M16.3
F16.3
Applications
-40 to 85
-40 to 85
-40 to 85
-55 to 125
• Any System Requiring RS-232 Communications Port
- Computer - Portable and Mainframe
- Peripheral - Printers and Terminals
- Portable Instrumentation
16 Ld CERDIP
16 Ld SOIC
16 Ld CERDIP
- Modems
• Dataloggers
Pinout
Functional Diagram
+5V
ICL232 (PDIP, CERDIP, SOIC)
+
TOP VIEW
1.0µF
16
V
1
C1+
V+
CC
1
2
3
4
5
6
7
8
16
15
14
V
1µF
1µF
CC
C1+
+
+
+
+
2
+5V TO 10V
VOLTAGE INVERTER
1µF
1µF
V+
V-
3
4
GND
C1-
C2+
C1-
C2+
C2-
V-
T1
OUT
+10V TO -10V
VOLTAGE INVERTER
6
5
C2-
13 R1
12 R1
IN
+5V
T1
14
400kΩ
11
OUT
IN
T1
T1
IN
OUT
T1
T2
11
10
9
+5V
400kΩ
T2
10
12
7
T2
T2
IN
OUT
T2
OUT
IN
13
R1
R1
IN
OUT
R2
IN
R2
OUT
5kΩ
5kΩ
R1
R2
9
8
R2
R2
IN
OUT
15
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 3020.5
Copyright © Harris Corporation 1997
8-49