1
TC232*
*Patented
DUAL RS-232 TRANSMITTER/RECEIVER AND POWER SUPPLY
FEATURES
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Meets All RS-232 Specifications
Operates From Single 5V Power Supply
2 Drivers and 2 Receivers
On-Board Voltage Quadrupler
Input Levels ......................................................
±
30V
Output Swing With +5V Supply ........................
±
9V
Low Supply Current ........................................ 5 mA
Does not require external
±
12V supplies
GENERAL DESCRIPTION
The TC232 is a dual RS-232 transmitter/receiver that
complies with EIA /TIA RS-232E guidelines and is ideal for
all RS-232 communication links. This device operates from
a 5V power supply and contains two charge pump voltage
converters that produce
±10V
power supplies.
The TC232 has four level translators. Two are RS-232
transmitters that convert TTL/CMOS input levels to 9V
RS-232 outputs. The other two translators are RS-232
receivers that convert RS-232 inputs to 5V TTL/CMOS
output levels. The receivers have a nominal threshold of
1.3V, a typical hysteresis of 0.5V, and can operate with
inputs up to
±30V.
2
3
4
APPLICATIONS
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RS-232C Communication Links
Modems, peripherals, computers
Battery-powered systems
PIN CONFIGURATIONS
(DIP AND SOIC)
+
C1
+
V
–
C1
+
C2
–
C2
V–
1
2
3
4
5
6
16 VCC
15 GND
14 T1OUT
13 R1 IN
+
C1
+
V
–
C1
+
C2
–
C2
V–
1
2
3
4
5
6
16 VCC
15 GND
14 T1OUT
13 R1 IN
ORDERING INFORMATION
Part No.
TC232COE
TC232CPE
TC232EOE
TC232EPE
TC232IJE
TC232MJE
Package
16-Pin SOIC (Wide)
16-Pin Plastic DIP
16-Pin SOIC (Wide)
16-Pin Plastic DIP
16-Pin CerDIP
16-Pin CerDIP
Temp. Range
0°C to +70°C
0°C to +70°C
– 40°C to +85°C
– 40°C to +85°C
– 25°C to +85°C
– 55°C to +125°C
T2 OUT 7
R2 IN 8
TC232CPE
TC232EPE
TC232IJE
TC232MJE
12 R1OUT
11 T1 IN
10 T2 IN
9 R2 OUT
TC232COE
TC232EOE
12 R1OUT
11 T1 IN
10 T2 IN
9 R2 OUT
T2 OUT 7
R2 IN 8
5
6
TYPICAL APPLICATION
+5V INPUT
+
16
1
C1 +
10
µF
C2 +
10
µF
C+
1
3 –
C1
4 +
C2
5 –
C2
+5V
400 kΩ
11 T1IN
+5V
TTL/CMOS
INPUTS
10 T2IN
400 kΩ
T2
T2OUT 7
T1
T1OUT 14
RS-232
OUTPUTS
VCC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO –10V
VOLTAGE INVERTER
V+
V–
2
+10V
–10V
6
+
C4
10
µF
+
C3*
10
µF
C3*
10
µF
+
10
µF
7
12 R1OUT
TTL/CMOS
OUTPUTS
9 R2OUT
R1
R1IN 13
5 kΩ
RS-232
INPUTS
R2
R2IN 8
5 k
Ω
GND
*NOTE:
C3 can be connected between
V+ and VCC for convenience.
15
8
TC232-6 10/21/96
TELCOM SEMICONDUCTOR, INC.
6-3
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
