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Intersil Electronic Components Datasheet



ICL232

Dual RS-232 Transmitter/Receiver



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ICL232 pdf
DATASHEET
+5V Powered, Dual RS-232 Transmitter/Receiver
ICL232
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 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.
Applications
• Any system requiring RS-232 communications port
- Computer - portable and mainframe
- Peripheral - printers and terminals
- Portable instrumentation
- Modems
• Dataloggers
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
- 300Ω power-off source impedance
- Output current limiting
- TTL/CMOS compatible
- 30V/µs maximum slew rate
• 2 Receivers
- 30V input voltage range
- 3kΩ 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
• Pb-free (RoHS compliant)
+
1.0µF
+5V
16
1µF
1µF
T1IN
T2IN
R1OUT
R2OUT
1
+
3
C1+
C1-
VCC
+5V TO 10V
VOLTAGE INVERTER
V+
2
4
+
C2+
+10V TO -10V
5 C2- VOLTAGE INVERTER
V- 6
+5V T1
11 400kΩ
14
+5V
10 400kΩ
12
T2
7
13
R1 5kΩ
+ 1µF
+ 1µF
T1OUT
T2OUT
R1IN
9 8 R2IN
R2 5kΩ
15
FIGURE 1. FUNCTIONAL DIAGRAM
October 15, 2014
FN3020.8
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2001, 2005, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.



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ICL232 pdf
Pin Configuration
ICL232
ICL232
(16 LD SOIC)
TOP VIEW
C1+ 1
V+ 2
C1- 3
C2+ 4
C2- 5
V- 6
T2OUT 7
R2IN 8
16 VCC
15 GND
14 T1OUT
13 R1IN
12 R1OUT
11 T1IN
10 T2IN
9 R2OUT
Pin Descriptions
PIN #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PIN NAME
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
R2out
T2IN
T1IN
R1OUT
R1IN
T1OUT
GND
VCC
DESCRIPTION
External capacitor “+” for internal voltage doubler.
Internally generated +10V (typical) supply.
External capacitor “-” for internal voltage doubler.
External capacitor “+” internal voltage inverter.
External capacitor “-” internal voltage inverter.
Internally generated -10V (typical) supply.
RS-232 Transmitter 2 output 10V (typical).
RS-232 Receiver 2 input, with internal 5k pulldown resistor to GND.
Receiver 2 TTL/CMOS output.
Transmitter 2 TTL/CMOS input, with internal 400k pullup resistor to VCC.
Transmitter 1 TTL/CMOS input, with internal 400k pullup resistor to VCC.
Receiver 1 TTL/CMOS output.
RS-232 Receiver 1 input, with internal 5k pulldown resistor to GND.
RS-232 Transmitter 1 output 10V (typical).
Supply Ground
Positive Power Supply +5V 10%.
Ordering Information
PART NUMBER
(Notes 1, 2)
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG
DWG. #
ICL232CBEZ
0 to +70
16 Ld SOIC
M16.3
ICL232CBEZT (Note 3)
0 to +70
16 Ld SOIC
M16.3
NOTES:
1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2. For Moisture Sensitivity Level (MSL), please see product information page for ICL232. For more information on MSL, please see tech brief TB363.
3. Please refer to TB347 for details on reel specifications.
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2
FN3020.8
October 15, 2014



Part Number ICL232
Description Dual RS-232 Transmitter/Receiver
Maker Intersil - Intersil
Total Page 8 Pages
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