19-1479; Rev 1; 7/99 ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 The MAX3180E–MAX3183E single RS-232 receivers in a SOT23-5 package are designed for space- and costconstrained applications requiring minimal RS-232 communications. The receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV per the Human Body Model, ensuring compliance with international standards. The devices minimize power and heat dissipation by consuming only 0.5µA supply current from a +3.0V to +5.5V supply, and they guarantee true RS-232 performance up to a 1.5Mbps data rate. The MAX3180E/ MAX3182E feature a three-state TTL/CMOS receiver output that is controlled by an EN logic input. The MAX3181E/MAX3183E feature an INVALID output that indicates valid RS-232 signals at the receiver input for applications requiring automatic system wake-up. The MAX3182E/MAX3183E have a noninverting output, while the MAX3180E/MAX3181E have a standard inverting output. Features ♦ Tiny SOT23-5 Package ♦ ESD-Protected RS-232 Input ±15kV—Human Body Model ±8kV—IEC 1000-4-2, Contact Discharge ±15kV—IEC 1000-4-2, Air-Gap Discharge ♦ 0.5µA Supply Current ♦ 1.5Mbps Guaranteed Data Rate ♦ Meets EIA/TIA-232 and V.28/V.24 Specifications Down to VCC = +3.0V ♦ INVALID Output Indicates Valid RS-232 Signal at Receiver Input (MAX3181E/MAX3183E) ♦ Three-State TTL/CMOS Receiver Output (MAX3180E/MAX3182E) ♦ Noninverting RS-232 Output (MAX3182E/MAX3183E) Ordering Information Applications Diagnostic Ports TEMP. RANGE PINPACKAGE MAX3180EEUK-T -40°C to +85°C 5 SOT23-5 ACHB MAX3181EEUK-T -40°C to +85°C 5 SOT23-5 ACHC MAX3182EEUK-T -40°C to +85°C 5 SOT23-5 ACHD MAX3183EEUK-T -40°C to +85°C 5 SOT23-5 ACHE PART Telecommunications Networking Equipment Set-Top Boxes Digital Cameras TOP MARK Hand-Held Equipment Pin Configurations/Functional Diagrams appear at end of data sheet. Selector Guide ESD PROTECTION (kV) PACKAGE SUPPLY CURRENT (µA) EN INPUT INVALID OUTPUT INVERTING ROUT NONINVERTING ROUT MAX3180E ±15 SOT23-5 0.5 ✓ — ✓ — MAX3181E ±15 SOT23-5 0.5 — ✓ ✓ — MAX3182E ±15 SOT23-5 0.5 ✓ — — ✓ MAX3183E ±15 SOT23-5 0.5 — ✓ — ✓ PART ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. MAX3180E–MAX3183E General Description MAX3180E–MAX3183E ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 ABSOLUTE MAXIMUM RATINGS VCC to GND ..............................................................-0.3V to +6V RIN to GND ..........................................................................±25V EN, ROUT, INVALID to GND ......................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70°C) SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C 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 = +3.0V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V, TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V 0.5 5.0 µA 0.8 V DC CHARACTERISTICS Supply Voltage VCC Supply Current ICC 3.0 VCC = 3.3V or 5V, RIN = VCC or GND, no load LOGIC INPUT (EN) Logic Threshold Low VIL Logic Threshold High VIH Leakage Current IEN VCC = 3.3V 2.0 VCC = 5.0V 2.4 V ±0.01 ±1.0 µA 0.4 V LOGIC OUTPUT INVALID Output Voltage Low VIOL ISINK = 1.6mA INVALID Output Voltage High VIOH ISOURCE = 1.0mA VCC 0.6 V RECEIVER INPUT Input Voltage Range VRIN Input Threshold Low VITL Input Threshold High VITH Input Hysteresis -25 25 VCC = 3.3V 0.6 1.2 VCC = 5.0V 0.8 1.5 V VCC = 3.3V 1.5 2.4 VCC = 5.0V 1.8 2.7 VHYST 300 Positive threshold VITOH RIN Threshold to INVALID Output Low VITOL -0.3 Input Resistance RRIN 3 Negative threshold V mV 2.7 RIN Threshold to INVALID Output High V -2.7 V 0.3 V 5 7 kΩ ±0.05 ±10 µA 0.4 V RECEIVER OUTPUT Output Leakage Current Output Voltage Low Output Voltage High 2 IROUT VOL VOH Receiver disabled ISINK = 1.6mA ISOURCE = 1.0mA VCC 0.6 VCC 0.1 _______________________________________________________________________________________ V ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 (VCC = +3.0V to +5.5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5.0V, TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS TIMING CHARACTERISTICS Maximum Data Rate CL = 50pF 1.5 Mbps Receiver Propagation Delay, High-to-Low tPHL RIN to ROUT; CL = 150pF 0.15 µs Receiver Propagation Delay, Low-to-High tPLH RIN to ROUT; CL = 150pF 0.15 µs tRS | tPHL - tPLH |, Figure 1 Receiver Skew 50 ns Receiver Output Enable Time tROE 200 ns Receiver Output Disable Time tROD 200 ns Receiver Positive or Negative Threshold to INVALID High tINVH 250 ns Receiver Positive or Negative Threshold to INVALID Low tINVL 30 µs Note 1: Specifications are 100% tested at TA = +25°C. Limits over temperature are guaranteed by design. Typical Operating Characteristics (VCC = +5V, TA = +25°C, unless otherwise noted.) RIN TO INVALID HIGH vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. DATA RATE 330 0.5 310 VCC = 5V 0.4 tINVH (ns) SUPPLY CURRENT (mA) MAX3180E-02 RL = 50kΩ CL = 100pF 0.6 350 MAX3180E-01 0.7 0.3 VCC = 3.3V 290 270 0.2 250 0.1 230 0 0 0.5 1.0 DATA RATE (Mbps) 1.5 3.0 3.5 4.0 4.5 5.0 5.5 VCC (V) _______________________________________________________________________________________ 3 MAX3180E–MAX3183E ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VCC = +5V, TA = +25°C, unless otherwise noted.) MAX3180E-03 60 55 MAX3180E-04 MAX3180E ENABLE ASSERTION TO ROUT RESPONSE RIN TO INVALID LOW vs. VCC 10V RIN 50 tINVL (µs) MAX3180E–MAX3183E ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 0 -10V 45 5V ROUT 40 0 35 5V ENABLE 30 0 VCC = 5.0V RL = 50kΩ CL = 100pF 25 3.0 3.5 4.0 4.5 5.0 500ns/div 5.5 VCC (V) Pin Description NAME PIN FUNCTION MAX3180E MAX3181E MAX3182E MAX3183E EN – EN – – INVALID – INVALID GND GND GND GND ROUT ROUT – – – – ROUT ROUT 4 RIN RIN RIN RIN Receiver Input 5 VCC VCC VCC VCC Supply Voltage 1 2 Receiver Output Enable Output of the Valid Input Detector Ground Inverting Receiver Output 3 Noninverting Receiver Output Detailed Description 5V RIN 50% 50% 0 t PLH t PHL VOH ROUT VOL 50% Figure 1. Receiver Propagation-Delay Timing 4 50% The MAX3180E–MAX3183E are EIA/TIA-232 and V.28/ V.24 communications receivers that convert RS-232 signals to CMOS logic levels. They operate on a +3V to +5.5V supply, have 1.5Mbps data rate capability, and feature enhanced electrostatic discharge (ESD) protection (see ESD Protection). All of these devices achieve a typical supply current of 0.5µA. The MAX3180E/ MAX3182E have a receiver enable control (EN). The MAX3181E/MAX3183E contain a signal invalid output (INVALID). The MAX3180E/MAX3181E invert the ROUT signal relative to RIN (standard RS-232). The MAX3182E/MAX3183E outputs are not inverted. The devices come in tiny SOT23-5 packages. _______________________________________________________________________________________ ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 RECEIVER INPUT LEVELS RECEIVER INPUT VOLTAGE (V) INDETERMINATE +0.3V 0 MAX3180E–MAX3183E VALID SIGNALS +2.7V INVALID REGION INVALID SIGNALS -0.3V VCC INVALID OUTPUT (V) 0 INDETERMINATE -2.7V tINVL VALID SIGNALS tINVH Figure 2. Input Levels and INVALID Timing Signal Invalid Detector If no valid signal levels appear on RIN for 30µs (typ), INVALID goes low. This event typically occurs if the RS-232 cable is disconnected, or if the connected peripheral transmitter is turned off. INVALID goes high when a valid level is applied to the RS-232 receiver input. Figure 2 shows the input levels and timing diagram for INVALID operation. Enable Input RC 1MΩ CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1500Ω DISCHARGE RESISTANCE DEVICE UNDER TEST STORAGE CAPACITOR The MAX3180E/MAX3182E feature an enable input (EN). Drive EN high to force ROUT into a high-impedance state. In this state, the devices ignore incoming RS-232 signals. Pull EN low 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 receiver inputs of the MAX3180E–MAX3183E have extra protection against static electricity. Maxim’s engineers have developed state-of-the-art structures enabling these pins to withstand ESD up to ±15kV without damage or latchup. The receiver inputs of the MAX3180E– MAX3183E are characterized for protection to the following limits: • ±15kV using the Human Body Model • ±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 Human Body Model Figure 3 shows the Human Body Model, and Figure 4 shows the current waveform it generates when discharged into a low impedance. This model consists of Figure 3. Human Body ESD Test Model IP 100% 90% Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) AMPERES 36.8% 10% 0 0 tRI TIME tDL CURRENT WAVEFORM Figure 4. Human Body Model Current Waveform a 100pF capacitor charged to the ESD voltage of interest, and then discharged into the test device through a 1.5kΩ resistor. _______________________________________________________________________________________ 5 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 MAX3180E–MAX3183E enable the design of equipment that meets the highest level (Level 4) of IEC 1000-4-2 without the need for additional ESDprotection 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 5 shows the IEC 1000-4-2 model, and Figure 6 shows the RC 50MΩ TO 100MΩ CHARGE-CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 150pF 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. Power-Supply Decoupling In most circumstances, a 0.1µF VCC bypass capacitor is adequate. Connect the bypass capacitor as close to the IC as possible. I 100% 90% RD 330Ω DISCHARGE RESISTANCE STORAGE CAPACITOR IPEAK MAX3180E–MAX3183E ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 DEVICE UNDER TEST 10% tR= 0.7ns TO 1ns t 30ns 60ns Figure 5. IEC 1000-4-2 ESD Test Model 6 Figure 6. IEC 1000-4-2 ESD Generator Current Waveform _______________________________________________________________________________________ ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 TOP VIEW EN (INVALID) 1 MAX3180E MAX3181E 5 VCC EN (INVALID) 1 5k MAX3182E MAX3183E 5 VCC 4 RIN 5k GND 2 GND 2 ROUT 3 4 SOT23-5 RIN ROUT 3 SOT23-5 ( ) ARE FOR MAX3181E/MAX3183E ONLY. ___________________Chip Information TRANSISTOR COUNT: 41 _______________________________________________________________________________________ 7 MAX3180E–MAX3183E Pin Configurations/Functional Diagrams ±15kV ESD-Protected, 0.5µA, +3V to +5.5V, 1.5Mbps RS-232 Receivers in SOT23-5 SOT5L.EPS MAX3180E–MAX3183E Package Information 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 © 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.