TC232 Datasheet, PDF (1/6 Pages) TelCom Semiconductor, Inc – DUAL RS-232 TRANSMITTER/RECEIVER AND POWER SUPPLY

TC232*
*Patented
DUAL RS-232 TRANSMITTER/RECEIVER AND POWER SUPPLY
FEATURES
s Meets All RS-232 Specifications
s Operates From Single 5V Power Supply
s 2 Drivers and 2 Receivers
s On-Board Voltage Quadrupler
s Input Levels ....................................................... ±30V
s Output Swing With +5V Supply ......................... ±9V
s Low Supply Current ........................................ 5 mA
s Does not require external ±12V supplies
APPLICATIONS
s RS-232C Communication Links
s Modems, peripherals, computers
s Battery-powered systems
PIN CONFIGURATIONS (DIP and SOIC)
C1+ 1
V+ 2
C1^– 3
C2+ 4
C2^– 5
V^– 6
T2 _OUT 7
R2 _{IN 8}
TC232CPE
TC232EPE
TC232IJE
TC232MJE
16 VCC
15 GND
14 T1OUT
13 R1IN
12 R1OUT
11 T1IN
10 T2IN
9 R2 _OUT
C1+ 1
V+ 2
C1^– 3
C2+ 4
C2^– 5
V^– 6
T2 _OUT 7
R2 _{IN 8}
TC232COE
TC232EOE
16 VCC
15 GND
14 T1OUT
13 R1IN
12 R1OUT
11 T1IN
10 T2IN
9 R2 _OUT
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.
ORDERING INFORMATION
Part No.
Package
TC232COE
TC232CPE
TC232EOE
TC232EPE
TC232IJE
TC232MJE
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
TYPICAL APPLICATION
C1 ⁺
10 µF
C2 ⁺
10 µF
TTL/CMOS
INPUTS
+5V INPUT
+
10 µF
1 _C+1
3
4
5
C–1
C2+
C2–
16
VCC
+5V TO +10V
VOLTAGE DOUBLER
+10V TO –10V
VOLTAGE INVERTER
+5V
C3*
10 µF
+
V+ ²
+10V
+
V ^{– –10V}
6
C4
+ ^{10 µF}
C3*
10 µF
400 kΩ
11 T1IN
T1
+5V
10 T2IN
400 kΩ
T2
T1OUT 14
T2OUT 7
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
12 ^R1OUT
9 R2OUT
*NOTE: C3 can be connected between
V+ and VCC for convenience.
© 2001 Microchip Technology Inc. DS21396A
R1
R2
GND
15
R1IN 13
5 kΩ
R2IN 8
5 kΩ
RS-232
INPUTS
TC232-6 10/21/96