TC232

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TC232 - TC232

DUAL RS-232 TRANSMITTER/ RECEIVER POWER SUPPLY TC232 TC232*
*Patented
DUAL RS-232 TRANSMITTER/RECEIVER POWER SUPPLY
Meets RS-232 Specifications Operates From Single Power Supply Drivers Receivers On-Board Voltage Quadrupler Input Levels ±30V Output Swing With Supply Supply Current Does require external ±12V supplies
GENERAL DESCRIPTION
TC232 dual RS-232 transmitter/receiver that complies with /TIA RS-232E guidelines ideal RS-232 communication links. This device operates from power supply contains charge pump voltage converters that produce ±10V power supplies. TC232 four level translators. RS-232 transmitters that convert TTL/CMOS input levels RS-232 outputs. other translators RS-232 receivers that convert RS-232 inputs TTL/CMOS output levels. receivers have nominal threshold 1.3V, typical hysteresis 0.5V, operate with inputs ±30V.
APPLICATIONS
RS-232C Communication Links Modems, peripherals, computers Battery-powered systems
CONFIGURATIONS (DIP SOIC)
T1OUT T1OUT
ORDERING INFORMATION
Part TC232COE TC232CPE TC232EOE TC232EPE TC232IJE TC232MJE Package 16-Pin SOIC (Wide) 16-Pin Plastic 16-Pin SOIC (Wide) 16-Pin Plastic 16-Pin CerDIP 16-Pin CerDIP Temp. Range +70°C +70°C 40°C +85°C 40°C +85°C 25°C +85°C 55°C +125°C
TC232CPE TC232EPE TC232IJE TC232MJE
R1OUT
TC232COE TC232EOE
R1OUT
TYPICAL APPLICATION
INPUT T1IN TTL/CMOS INPUTS T2IN T2OUT T1OUT RS-232 OUTPUTS +10V VOLTAGE DOUBLER +10V -10V VOLTAGE INVERTER +10V -10V
R1OUT TTL/CMOS OUTPUTS R2OUT
R1IN RS-232 INPUTS
R2IN
*NOTE: connected between convenience.
TC232-6 10/21/96
TelCom Semiconductor reserves right make changes circuitry specifications devices.
DUAL RS-232 TRANSMITTER/ RECEIVER POWER SUPPLY TC232
ABSOLUTE MAXIMUM RATINGS*
+12V +12V Input Voltages T1IN, T2IN -0.3 (VCC +0.3V) R1IN, R2IN ±30V Output Voltages T1OUT, T2OUT +0.3V) -0.3V) R1OUT, R2OUT -0.3 (VCC +0.3V) Short Circuit Duration 30sec 30sec T1OUT, T2OUT Continuous Storage Temperature Range -65°C +150°C Package Power Dissipation 70°C) CerDIP .890mW Derate mW/°C Above +70°C Plastic .840mW Derate mW/°C Above +70°C Small Outline (SOIC) .760mW Derate mW/°C Above +70°C
*Static-sensitive device. Unused devices must stored conductive material. Protect devices from static discharge static fields. Stresses above those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only functional operation device these other conditions above those indicated operation sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS: ±10%, operating temperature range, test circuit unless
otherwise noted. Parameter
Output Voltage Swing Power Supply Current Input Logic Threshold Input Logic Threshold High Logic Pull-Up Current RS-232 Input Voltage Operating Range RS-232 Input Threshold RS-232 Input Threshold High RS-232 Input Hysteresis RS-232 Input Resistance TTL/CMOS Output Voltage TTL/CMOS Output Voltage High Propagation Delay Instantaneous Slew Rate Transition Region Slew Rate
Test Conditions
T1OUT, T2OUT Loaded With Ground T1IN, T2IN T1IN, T2IN T1IN, T2IN +25°C, IOUT IOUT RS-232 RS-232 +25°C (Note 2500 Measured From VOUT
Unit
µsec V/µsec V/µsec
Output Resistance RS-232 Output Short-Circuit Current
NOTE Sample tested.
DUAL RS-232 TRANSMITTER/ RECEIVER POWER SUPPLY TC232
DETAILED DESCRIPTION
TC232 contains ±10V dual charge pump voltage converter, dual transmitter dual receiver. Output Voltages Load Current
(VCC 4.5V)
OUTPUT VOLTAGE (|V|)
±10V Dual Charge Pump Voltage Converter
TC232 power supply consists charge pumps. uses external capacitor double input +10V, with output impedance about 200. other uses invert +10V 10V, with overall output impedance (including effects +10V doubler impedance). clock doubler circuit will start 4.2V typical part, external loads make this point rise high 4.5V with load each output voltages. Because this, doubler inverter additional external circuits should limited. maximum current should more than from +10V 10V. order guarantee start-up doubler clock. test circuit employs capacitors value critical. These capacitors usually lowcost aluminum tantalum electrolytic capacitors. Increasing lowers output impedance +10V doubler inverter change capacitors. Increasing lowers ripple ±10V outputs ripple RS-232 outputs. Where size critical, value lowered capacitor will help lower output ripple keep output impedance ±10V possible.
(VCC 4.5V)
(VCC
(VCC
CONDITIONS: +25°C TRANSMITTER OUTPUTS OPEN CIRCUIT (mA) LOAD
outputs protected short-circuited ground indefinitely.
Dual Receiver
TC232 receivers meet RS-232 input specifications. Input impedance between Switching thresholds within limits, receivers withstand ±30V inputs. RS-232 TTL/CMOS input compatible, receivers have 0.8V 2.4V with 0.5V hysteresis reject noise. TTL/CMOS compatible receiver output when RS-232 input greater than 2.4V. HIGH when input floating between +0.8V 30V. TEST CIRCUIT
+4.5V +5.5V INPUT T1OUT R1IN R1OUT R2OUT RS-232 OUTPUT RS-232 INPUT ±30V TTL/CMOS OUTPUT TTL/CMOS INPUT TTL/CMOS INPUT TTL/CMOS OUTPUT
Dual Transmitter
TC232 transmitters CMOS inverters driven ±10V internally-generated voltages. input TTL/CMOS compatible, with logic threshold about (1.3V VCC). input unused transmitter left unconnected, since internal pull-up resistor connected between transmitter input pulls input HIGH forces unused transmitter output state. With outputs will from 0.6V) with load will swing when loaded with minimum output voltage swing, with 4.5V maximum ambient temperature, ±5V. This conforms RS-232 specifications "worst-case" conditions. EIA/TIA RS-232E specs limit slew rate output less than 30V/µs. powered-down output impedance (VCC minimum with applied outputs.
TC232
RS-232 INPUT ±30V
RS-232 OUTPUT
DUAL RS-232 TRANSMITTER/ RECEIVER POWER SUPPLY TC232
PACKAGE DIMENSIONS 16-Pin Plastic
.260 (6.60) .240 (6.10)
.770 (19.56) .745 (18.92) .200 (5.08) .140 (3.56) .150 (3.81) .115 (2.92)
.310 (7.87) .290 (7.37)
.040 (1.02) .020 (0.51)
.015 (0.38) .008 (0.20) .400 (10.16) .310 (7.87)
MIN.
.110 (2.79) .090 (2.29)
.070 (1.78) .045 (1.14)
.022 (0.56) .015 (0.38)
16-Pin CerDIP
.300 (7.62) .245 (6.22)
.080 (2.03) MAX.
.030 (0.76) MIN.
.780 (19.81) .740 (18.80) .200 (5.08) .160 (4.06) .200 (5.08) .125 (3.18) .040 (1.02) .020 (0.51) .015 (0.38) .008 (0.20)
.320 (8.13) .290 (7.37)
.150 (3.81) MIN.
MIN.
.110 (2.79) .090 (2.29)
.065 (1.65) .045 (1.14)
.400 (10.16) .320 (8.13) .020 (2.51) .016 (0.41)
Dimensions: inches (mm)
DUAL RS-232 TRANSMITTER/ RECEIVER POWER SUPPLY TC232
PACKAGE DIMENSIONS (Cont.) 16-Pin SOIC (Wide)
.299 (7.59) .419 (10.65) .290 (7.40) .394 (10.10)
.413 (10.49) .398 (10.10) .104 (2.64) .097 (2.46) .050 (1.27) TYP. .019 (0.48) .014 (0.36) .012 (0.30) .004 (0.10)
MAX. .050 (1.27) .015 (0.40)
.013 (0.33) .009 (0.23)
Dimensions: inches (mm)
Sales Offices
TelCom Semiconductor 1300 Terra Bella Avenue P.O. 7267 Mountain View, 94039-7267 TEL: 650-968-9241 FAX: 650-967-1590 E-Mail: liter@c2smtp.telcom-semi.com TelCom Semiconductor Austin Product Center 9101 Burnet Suite Austin, 78758 TEL: 512-873-7100 FAX: 512-873-8236 TelCom Semiconductor H.K. Ltd. Chuk Street, Ground Floor Kong, Kowloon Hong Kong TEL: 852-2324-0122 FAX: 852-2354-9957
Printed U.S.A.

TC232

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