19-1931; Rev 1; 3/03 ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 Features ♦ Small 6-Pin SOT23 Package ♦ ESD-Protected RS-232 Output (MAX3190E) ±15kV per Human Body Model ±8kV per IEC 1000-4-2 Contact Discharge ±15kV per IEC 1000-4-2 Air-Gap Discharge ♦ 200µA Operating Supply Current ♦ Shutdown Reduces Supply Current to 0.4µA ♦ RS-232-Compliant Operation from ±7.5V to ±12V Supplies ♦ RS-232-Compatible Operations from ±6V to ±7.5V Supplies ♦ 460kbps Guaranteed Data Rate ♦ Three-State RS-232 Transmitter Output ♦ No External Components Ordering Information Applications Set-Top Boxes PART TEMP RANGE PINPACKAGE TOP MARK MAX3190EUT-T -40°C to +85°C 6 SOT23-6 AAIA MAX3190EEUT-T -40°C to +85°C 6 SOT23-6 ABQS Telecommunications Diagnostic Ports Networking Equipment Digital Cameras Hand-Held Equipment Typical Operating Circuit +5V +10V 1 6 Pin Configuration TOP VIEW SHDN VCC CBYPASS1 0.1µF VEE 5 MAX3190 MAX3190E 3 TIN -10V SHDN 1 CBYPASS2 0.1µF GND 2 MAX3190 MAX3190E 6 VCC 5 VEE 4 TOUT TOUT 4 TIN 3 GND 2 SOT23-6 CAPACITORS MAY BE POLARIZED OR UNPOLARIZED. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX3190/MAX3190E General Description The MAX3190/MAX3190E single RS-232 transmitters in a SOT23-6 package are for space- and cost-constrained applications requiring minimal RS-232 communications. These devices consume only 200µA of supply current from ±7.5V to ±12V supplies. The MAX3190/MAX3190E transmitter outputs are RS-232 compatible when powered from ±6V to ±7.5V supplies. They feature a shutdown input that reduces current consumption to only 1µA and forces the transmitter output into a high-impedance state. RS-232-compliant data transmission is guaranteed up to 460kbps. The MAX3190/MAX3190E are EIA/TIA-232 transmitters that convert CMOS/TTL logic levels to RS-232-compliant signals. The MAX3190E transmitter output is protected to ±15kV per the Human Body Model, ±8kV per IEC 1000-4-2 Contact Discharge, and ±15kV per IEC 10004-2 Air-Gap Discharge, providing protection against harsh environments. The MAX3190/ MAX3190E transmitters have a standard inverting output. MAX3190/MAX3190E ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 ABSOLUTE MAXIMUM RATINGS VCC to GND (Note 1) ...........................................-0.3V to +13.2V VEE to GND (Note 1)............................................+0.3V to -13.2V VCC to VEE (Note 1) .............................................................+22V TIN, SHDN to GND ...................................................-0.3V to +7V TOUT to GND (SHDN = GND)..........................................±13.2V Output Short-Circuit to GND Duration........................Continuous Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 8.7mW/°C above +70°C)..........691mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Note 1: VCC and VEE can have maximum magnitudes of 13.2V, but their absolute difference cannot exceed 22V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = +7.5V to +12V, VEE = -7.5V to -12V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +10V, VEE = -10V, and TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 7.5 12 V -12 -7.5 V 250 µA DC CHARACTERISTICS Positive Supply Voltage VCC Negative Supply Voltage VEE Positive Supply Current ICC V SHDN = +5V Negative Supply Current IEE V SHDN = +5V Shutdown Supply Current -125 V SHDN = 0 µA ±0.4 ±10 µA 0.8 V INPUT LOGIC (TIN, SHDN) Input Logic Threshold Low VIL Input Logic Threshold High VIH 2.4 Input Leakage V ±0.01 TIN Input Hysteresis ±1 100 µA mV TRANSMITTER OUTPUT Output Voltage Swing VTOUT Output Resistance VCC = 7.5V, VEE = -7.5V, RL = 3kΩ ±5 ±3.7 V RTOUT VCC = VEE = 0, VTOUT = ±2V 300 Ω ITOUT VTOUT = ±12V; VCC = 0 or VCC = +10V, VEE = -10V; SHDN = GND Output Short-Circuit Current Output Leakage Current V VCC = 6V, VEE = -6V, RL = 3kΩ ±35 +60 mA ±100 µA TIMING CHARACTERISTICS RL = 3kΩ, CL = 1000pF Maximum Data Rate Transmitter Skew tTS Transmitter Enable Time 2 |tPHL - tPLH|, Figure 1 RL = 3kΩ to 7kΩ, CL = 300pF to 1000pF, measured from -3V to +3V or +3V to -3V, VCC = +10V, VEE = -10V, TA = +25°C Transition-Region Slew Rate tEN 460 kbps 100 6 ns 30 2 _______________________________________________________________________________________ V/µs µs ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 (VCC = +7.5V to +12V, VEE = -7.5V to -12V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +10V, VEE = -10V, and TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ESD PROTECTION (MAX3190E) Human Body Model TOUT ±15 IEC 1000-4-2 Contact Discharge ±8 IEC 1000-4-2 Air-Gap Discharge ±15 kV Note 2: All devices are 100% tested at TA = +25°C. All limits over temperature are guaranteed by design. Typical Operating Characteristics (VCC = +10V, VEE = -10V, RL = 3kΩ, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. OUTPUT CAPACITANCE SLEW RATE vs. OUTPUT CAPACITANCE 4 125kbps 3 2 35 30 SLEW RATE (V/µs) 20kbps 25 RISING EDGE 20 15 10 1 FALLING EDGE 5 0 0 0 500 1000 1500 2000 0 2500 400 TRANSMITTER OUTPUT SHUTDOWN WAVEFORM 5V 0 -10V 1.0µs/div TOUT VOLTAGE (V) 0 +10V TOUT 1200 1600 2000 TRANSMITTER OUTPUT VOLTAGE vs. SUPPLY VOLTAGE MAX3190/90E toc03 SHDN 800 CAPACITANCE (pF) OUTPUT CAPACITANCE (pF) 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 MAX3190/90E toc04 SUPPLY CURRENT (mA) 250kbps MAX3190/90E toc02 460kbps 5 40 MAX3190/90E toc01 6 VEE = -VCC, 460kbps POSITIVE NEGATIVE 6 7 8 9 10 11 12 SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 3 MAX3190/MAX3190E ELECTRICAL CHARACTERISTICS (continued) MAX3190/MAX3190E ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 Pin Description +10V PIN FUNCTION NAME 50% TOUT 50% -10V 1 2 SHDN GND Active-Low Shutdown. Pull low to reduce the supply current and to force TOUT into a high-impedance state. Ground tPLH tPHL VIH 50% TIN 50% VIL 3 TIN TTL/CMOS Transmitter Input 4 TOUT 5 VEE Negative Supply Voltage 6 VCC Positive Supply Voltage RS-232 Transmitter Output Detailed Description The MAX3190/MAX3190E are EIA/TIA-232 transmitters that convert CMOS/TTL logic levels to RS-232 signals. They operate on ±7.5V to ±12V supplies and feature enhanced electrostatic discharge protection (see ESD Protection). The MAX3190/MAX3190E guarantee a 460kbps data rate with worst-case loads of 3kΩ in parallel with 1000pF. The MAX3190/MAX3190E invert the TOUT signal relative to TIN (standard RS-232). The transmitter input does not have a pullup resistor and should be connected to GND if unused. Shutdown The MAX3190/MAX3190E feature a shutdown input. Drive SHDN low to reduce the supply current to 1µA (max). Shutdown also forces TOUT into a high-impedance state, allowing the signal line to be safely controlled by other transmitters. Drive SHDN high for normal operation. ESD Protection As with all Maxim devices, ESD protection structures are incorporated on all pins to protect against ESD encountered during handling and assembly. The MAX3190E’s transmitter output has extra protection against static electricity. Maxim has developed state-of-the-art structures enabling this pin to withstand ESD up to ±15kV without damage or latch-up. The MAX3190E’s transmitter output is characterized for protection to the following limits: • ±15kV using the Human Body Model Figure 1. Transmitter Propagation-Delay Timing Human Body Model Figure 2 shows the Human Body Model, and Figure 3 shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, and then discharged into the test device through a 1.5kΩ resistor. IEC 1000-4-2 The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifically refer to ICs. The MAX3190E enables the design of equipment that meets the highest level (Level 4) of IEC 1000-4-2 without the need for additional ESD-protection components. The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2. Because series resistance is lower in the IEC 1000-4-2 model, the ESD withstand voltage measured to this standard is generally lower than that measured using the Human Body. Figure 4 shows the IEC 1000-4-2 model, and Figure 5 RC 1MΩ CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1500Ω DISCHARGE RESISTANCE STORAGE CAPACITOR • ±8kV using the Contact Discharge method specified in IEC 1000-4-2 • ±15kV using the Air-Gap Discharge method specified in IEC 1000-4-2 Figure 2. Human Body ESD Test Model 4 _______________________________________________________________________________________ DEVICE UNDER TEST ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES 36.8% Power-Supply Decoupling 10% 0 In most circumstances, 0.1µF bypass capacitors are adequate for power-supply decoupling. Connect the bypass capacitors as close to the IC as possible. 0 TIME tRI tDL CURRENT WAVEFORM Applications Information Power-Supply Sources Figure 3. Human Body Model Current Waveform RC 50MΩ TO 100MΩ CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF RD 330Ω DISCHARGE RESISTANCE STORAGE CAPACITOR DEVICE UNDER TEST Figure 4. IEC 1000-4-2 ESD Test Model The MAX3190/MAX3190E require ±7.5V to ±12V dual supplies. For applications where these supply voltages are not present, a DC-DC converter must be added. Due to the MAX3190/MAX3190E’s low current consumption, a charge pump can provide the proper supply voltages and requires a minimal amount of board space and cost. When using another RS-232 device containing an internal unregulated charge pump (Tables 1 and 2), the MAX3190/MAX3190E may be powered from the internal charge pump (Figure 6). This eliminates the need for additional external DC-DC converters to generate the required ±7.5V to ±12V dual supplies. The MAX3190/ MAX3190E are specifically designed to be used with Maxim’s RS-232 products listed in Tables 1 and 2. Competitive RS-232 devices’ charge pumps typically do not have the capability to power these devices. The MAX3190/MAX3190E can be operated from ±6V to ±7.5V supplies. In this condition, the devices are guaranteed to be RS-232-compatible (TOUT ≥ +3.7V). For applications that have ±4.5V to ±6V supplies available, please refer to the MAX3188/MAX3189 or MAX3188E/MAX3189E data sheet. IPEAK I 100% 90% 10% tR = 0.7ns TO 1ns t 30ns 60ns Figure 5. IEC 1000-4-2 Generator Current Waveform _______________________________________________________________________________________ 5 MAX3190/MAX3190E IP 100% 90% shows the current waveform for the ±8kV IEC 1000-4-2 Level 4 ESD Contact Discharge test. The Air-Gap test involves approaching the device with a charged probe. The Contact Discharge method connects the probe to the device before the probe is energized. MAX3190/MAX3190E ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 +5V SUPPLY CBYPASS 0.1µF C3 0.1µF VCC C1+ V+ C1- V- VCC SHDN +5V C1 VEE C4 0.1µF C2+ MAX3190 MAX3190E C2 C2TIN TOUT MAX_ _ _ _* GND GND * FOR MAXIM PART NUMBER, SEE TABLES 1 AND 2. Figure 6. Powering the MAX3190/MAX3190E 6 _______________________________________________________________________________________ ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 PART NUMBER NO. OF TX/RX MAX200 MAX201 MAX202 MAX203 MAX204 MAX205 MAX206 MAX207 MAX208 MAX209 MAX211 MAX213 MAX220 MAX221 MAX222 MAX223 MAX225 MAX230 MAX231 MAX232 MAX232A MAX233A MAX233 MAX234 MAX235 MAX236 MAX237 MAX238 MAX239 MAX240 MAX241 MAX242 MAX243 MAX244 MAX248 MAX249 5/0 2/2 2/2 2/2 4/0 5/5 4/3 5/3 4/4 3/5 4/5 4/5 2/2 1/1 2/2 4/5 5/5 5/0 2/2 2/2 2/2 2/2 2/2 4/0 5/5 4/3 5/3 4/4 3/5 5/5 4/5 2/2 2/2 8/10 8/8 6/10 DATA RATE (kbps) 120 120 64 120 120 120 120 120 120 120 120 120 120 250 200 120 120 120 120 120 200 200 120 120 120 120 120 120 120 120 120 200 200 120 120 120 Table 2. ±15kV ESD-Protected RS-232 Devices with Internal Unregulated Charge Pumps of ±10V (typical) PART NUMBER NO. OF TX/RX MAX202E MAX203E MAX205E MAX206E MAX207E MAX208E MAX211E MAX213E MAX221E MAX241E 2/2 2/2 5/5 4/3 5/3 4/4 4/5 4/5 1/1 4/5 DATA RATE (kbps) 64 120 120 120 120 120 120 120 250 120 Chip Information TRANSISTOR COUNT: 75 PROCESS: CMOS _______________________________________________________________________________________ 7 MAX3188E/MAX3189E Table 1. RS-232 Devices with Internal Unregulated Charge Pumps of ±10V (typical) Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6LSOT.EPS MAX3188E/MAX3189E ±15kV ESD-Protected, 460kbps, RS-232 Transmitters in SOT23-6 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.