MAX14585EVB

19-5878; Rev 0; 5/11 EVALUATION KIT AVAILABLE MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection General Description The MAX14585/MAX14585A high-ESD-protected doublepole/double-throw (DPDT) switches multiplex Hi-Speed (480Mbps) USB and analog signals such as AC-coupled audio or video. These devices combine the low oncapacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications in portable electronics and include an internal negative supply to pass audio signals that swing below ground down to -1.8V. The devices also handle USB low-/full-speed signaling and operate from a 2.7V to 5.5V supply. The devices feature a VBUS detection input (VB) that can handle voltage up to 28V to automatically switch to the USB signal path upon detection of a valid VBUS signal (VB > VVBDET). In a dead battery situation, the voltage on VB can supply power to the part if VB is greater than 4.5V. The MAX14585 features internal shunt resistors on the audio path to reduce clicks and pops heard at the output. The MAX14585/MAX14585A are available in a spacesaving, 10-pin, 1.4mm x 1.8mm UTQFN package and operate over the -40NC to +85NC temperature range. Benefits and Features S Low Power Consumption  Low Supply Current 7µA (typ)  Single 2.7V to 5.5V Supply Operation, VCC S Flexible Design  Dual Power-Supply Architecture, VB and VCC  ANO� Channel Override Control Input S High Level of Integration for Performance  28V-Capable VB Input with Automatic UNC� Selection by VBUS Detection  Low-Capacitance Hi-Speed USB for Both Channels (UNC� and ANO�)  Distortion-Free Negative Signal Throughput Down to -1.8V on ANO� Channel  I (typ) On-Resistance 3  960MHz Bandwidth  0.04% THD+N Audio Channel  15kV Human Body Model (HBM) ESD on ± COM1, COM2 S Saves Board Space  Internal Shunt Resistor Reduces Clicks and Pops (MAX14585)  10-Pin, 1.4mm x 1.8mm UTQFN Package Ordering Information appears at end of data sheet. For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX14585.related. Applications Cell Phones PDAs and Handheld Devices Tablet PCs Typical Operating Circuit 3.0V 0.1µF VCC HI-SPEED USB TRANSCEIVER UNC1 UNC2 MAX14585/MAX14585A VCCINT COM1 COMBINATION USB AND AUDIO CONNECTOR COM2 AUDIO AMPLIFIER AN01 AN02 VBUS VB MAX14585 ONLY VVBDET GND AOR ����������������������������������������������������������������� Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) VCC, AOR ................................................................ -0.3V to +6V VB .......................................................................... -0.3V to +30V UNC_, ANO_, COM_ (VCC R 2.7V) ... -1.9V to min(VCC + 0.3V, 3.7V) UNC_, COM_ (VB R 4.5V, VCC < 2.7V) ................ -0.3V to +3.7V UNC_, ANO_, COM_ (VCC < 2.7V).. -0.3V to min(VCC + 0.3V, 3.7V) UNC_, ANO_, COM_ (VCC = 0V, VB = 0V) ............. -0.3V to +6V Continuous Current into Any Pin ................................... Q100mA Continuous Power Dissipation (TA = +70NC) UTQFN (derate 7mW/NC above +70NC) ...................... 559mW Operating Temperature Range .......................... -40NC to +85NC Junction Temperature Range........................... -40NC to +150NC Storage Temperature Range............................ -65NC to +150NC Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) UTQFN Junction-to-Ambient Thermal Resistance (BJA) ..... 143.2NC/W Junction-to-Case Thermal Resistance (BJC) ............ 20.1NC/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 3V, TA = +25NC.) (Note 2) PARAMETER POWER SUPPLY Power-Supply Range Supply Current Power-Supply Rejection Ratio VB Detect Threshold VB Detect Hysteresis VB Detect Leakage Current ANALOG SWITCH VUNC_ Analog-Signal Range VANO_, VCOM_ RON(NO) VCC R 2.7V for UNC_ VCC R 2.7V for ANO_, COM_ VCC = 3V, VANO_= -1.5V, +1.5V ICOM_ = 10mA VCC = 3V, VUNC_= 0V to VCC, ICOM_ = 10mA VB = 4.5V, VCC = 0V to 5.5V, VUNC_ = 0V to 2.5V, VAOR = 0V, ICOM_ = 10mA VCC = 3V, VANO_ = 0V, ICOM_ = 10mA (Note 3) 0 -1.8 3 3 3 0.2 min(3.6V, VCC) min(3.6V, VCC) 6 6 I 6 I VCC ISUPPLY PSRR VVBDET VVBDET_H VCC = 4.2V, 0V < VAOR < 0.4V, VAOR R 1.4V f = 10kHz, VCC = 3.0 Q 0.3V, RCOM_= 50I VBUS rising, VCC R 2.7V VBUS falling, VCC R 2.7V VB = 5.5V 3 2.7 7 100 3.3 0.2 40 3.6 5.5 14 V FA dB V V FA SYMBOL CONDITIONS MIN TYP MAX UNITS V ANO_ On-Resistance I UNC_ On-Resistance RON(NC) ANO_ On-Resistance Match Between Channels DRON(NO) ����������������������������������������������������������������� Maxim Integrated Products 2 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection ELECTRICAL CHARACTERISTICS (continued) (TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 3V, TA = +25NC.) (Note 2) PARAMETER UNC_ On-Resistance Match Between Channels ANO_ On-Resistance Flatness UNC_ On-Resistance Flatness Shunt Switch Resistance AOR Pulldown Resistor UNC_ Off-Leakage Current ANO_ Off-Leakage Current COM_ Off-Leakage Current SYMBOL DRON(NC) RFLAT(NO) RFLAT(NC) RSH RAOR IUNC_(OFF) IANO_(OFF) ICOM_(OFF) Switch open, VUNC_ = 2.5V, 0V VCOM_ = -1.5V, 2.5V, VCC = 3V MAX14585A, switch open, VANO_ = 2.5V, 0V, VCOM_ = 0V, 2.5V, VCC = 3V VCC = 0V, VCOM_ = 3.6V, VUNC_ = VANO_ = unconnected USB mode COM_ On-Leakage Current ICOM_(ON) Audio mode VCC = 3V, VANO_ = 0V, 2.5V, unconnected, VCOM_ = 0V, 2.5V VCC = 3V, VUNC_ = 0V, 2.5V, unconnected, VCOM_ = -1.5V, 2.5V VCC = 3V, VANO_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V or VB = 5V, VAOR = 0V to VCC VCC = 3V, VUNC_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V VCC = 3V, VANO_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V VCC = 3V, VUNC_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V or VB = 5V, VAOR = 0V to VCC CONDITIONS VCC = 3V, VUNC_ = 0V, ICOM_= 10mA (Note 3) VCC = 3V, ICOM_ = 10mA, VANO_ = -1.5V to +1.5V (Note 4) VCC = 3V, ICOM_ = 10mA, VUNC_= 0V to VCC (Note 4) IANO_ = 2mA, VCC R 2.7V 250 -100 -100 -10 MIN TYP 0.2 0.04 0.04 700 0.2 0.2 1300 1200 +100 +100 +800 MAX UNITS I I I I kI nA nA FA -200 +200 nA -200 +200 nA ANO_ to COM_, Figure 1 Turn-On Time tON UNC_ to COM_, Figure 1 ANO_ from COM_, Figure 1 Turn-Off Time tOFF UNC_ from COM_, Figure 1 45 120 Fs 45 120 Fs 8 40 Fs 8 40 Fs Break-Before-Make Time Delay Output Skew (Same Switch) Output Skew Between Switches ANO_ Off-Capacitance UNC_ Off-Capacitance tD tSK(P) tSK(O) CNO_(OFF) CNC_(OFF) RL = 50I, time delay between one side of the switch open and the other side closed Figure 2 Figure 2 VANO_ = 0.5VP-P, DC bias = 0V, f = 1MHz VUNC_ = 0.5VP-P, DC bias = 0V, f = 1MHz 28 40 40 2.5 2.5 Fs ps ps pF pF ����������������������������������������������������������������� Maxim Integrated Products 3 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection ELECTRICAL CHARACTERISTICS (continued) (TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 3V, TA = +25NC.) (Note 2) PARAMETER On-Capacitance AC PERFORMANCE ANO_ -3dB Bandwidth UNC_ -3dB Bandwidth Off-Isolation Crosstalk Total Harmonic Distortion Plus Noise LOGIC INPUT AOR Input Logic-High AOR Input Logic-Low AOR Input Leakage Current ESD PROTECTION Human Body Model COM1, COM2 All Other Pins IEC 61000-4-2 Air Gap Discharge IEC 61000-4-2 Contact Discharge Human Body Model Q15 Q8 Q8 Q2 kV kV VIH VIL IIN VCC R 2.7V VCC R 2.7V VAOR = 0V or VCC, VCC R 2.7V -22 1.4 0.4 +22 V V FA THD+N BWNO BWNC RS = RL = 50I, VANO_ = 0dBm, Figure 3 RS = RL = 50I, VUNC_ = 0dBm, Figure 3 f = 100kHz, VCOM_ = 1VRMS, RL = 50I, Figure 3 f = 100kHz, VCOM_ = 1VRMS, RL = 50I, Figure 3 (Note 5) ANO_ to COM_, f = 20Hz to 20kHz, VCOM_ = 0.5VP-P, DC bias = 0V, RL = 600I 960 960 -84 -86 0.042 MHz MHz dB dB % SYMBOL CCOM_(ON) CONDITIONS VCOM_ = 0.5VP-P, DC bias = 0V, f = 240MHz, RL = 50I MIN TYP 6.7 MAX UNITS pF Note 2: All devices are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by design; not production tested. Note 3: DRON(MAX) = ABS(RON(CH1) - RON(CH2)). Note 4: Flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over specified analog-signal ranges. Note 5: Between two switches. MAX14585 MAX14585A VIN_ ANO_ OR UNC_ CONTROL LOGIC INPUT COM_ RL VOUT CL LOGIC INPUT VIH VIL 50% tR < 5 ns tF < 5 ns t OFF VOUT SWITCH OUTPUT 0V t ON CONTROL DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. 0.9 x V0UT 0.1 x VOUT CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VIN_ RL + RON ( ) Figure 1. Switching Time ����������������������������������������������������������������� Maxim Integrated Products 4 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection RS UNC1 OR ANO1 MAX14585 MAX14585A COM1 RL VINRS UNC2 OR ANO2 COM2 RL CONTROL VIL TO VIH tINRISE VCC VIN+ 0V VCC VIN0V tOUTRISE tPLHX VCC VOUT+ 0V VCC VOUT0V tPHLY tPLHY 50% 50% 50% 50% 10% 10% tPHLX 90% 90% tOUTFALL 50% 50% 50% 50% 10% 10% tINFALL VOUTVOUT+ tPLH = tPLHX OR tPLHY tPHL = tPHLX OR tPHLY tSK(O) = |tPLHX - tPLHY| OR |tPHLX - tPHLY| tSK(P) = |tPLHX - tPHLX| OR |tPLHY - tPHLY| CONTROL DEPENDS ON SWITCH CONFIGURATION. VIN+ 90% 90% Figure 2. Output Skew NETWORK ANALYZER OFF-ISOLATION = 20log 50Ω VOUT VIN COM1 UNC1 50Ω MAX14585 MAX14585A ANO1* VIN 50Ω V ON-LOSS = 20log OUT VIN MEAS 50Ω REF 50Ω V CROSSTALK = 20log OUT VIN VOUT OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" ANO_ OR UNC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" ANO_ OR UNC_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. *FOR CROSSTALK THIS PIN IS ANO2. UNC2 AND COM2 ARE OPEN. Figure 3. On-Loss, Off-Isolation, and Crosstalk ����������������������������������������������������������������� Maxim Integrated Products 5 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Typical Operating Characteristics (VCC = 3.0V, TA = +25NC, unless otherwise noted.) UNC_ ON-RESISTANCE vs. COM_ VOLTAGE MAX14585/85A toc01 ANO_ ON-RESISTANCE vs. COM_ VOLTAGE MAX14585/85A toc02 UNC_ ON-RESISTANCE vs. COM_ VOLTAGE 3.8 3.6 ON-RESISTANCE (Ω) 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 MAX14585/85A toc03 3.3 3.2 ON-RESISTANCE (Ω) 3.1 3.0 2.9 2.8 2.7 2.6 2.5 0 IUNC_ = 10mA 3.3 3.2 ON-RESISTANCE (Ω) 3.1 3.0 2.9 2.8 2.7 2.6 2.5 VCC = 2.7V IANO_ = 10mA 4.0 TA = +85°C TA = +25°C VCC = 2.7V VCC = 5V TA = -40°C VCC = 5V VCC = 3V IUNC_ = 10mA 0 0.5 1.0 1.5 VCOM_ (V) 2.0 2.5 3.0 1 2 VCOM_ (V) 3 4 -2 -1 0 1 VCOM_ (V) 2 3 4 ANO_ ON-RESISTANCE vs. COM_ VOLTAGE MAX14585/85A toc04 MAX14585/85A toc05 3.8 3.6 ON-RESISTANCE (Ω) 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 -2 -1 0 1 VCOM_ (V) VCOM_ = 2.5V 35 ON-LEAKAGE CURRENT (nA) 30 25 20 15 10 5 TA = +85°C TA = +25°C OFF-LEAKAGE CURRENT (µA) 500 400 300 200 100 0 VCC = 0V VCOM_ = 3.6V TA = -40°C VCC = 3V IANO_ = 10mA 2 3 0 -40 -15 10 35 60 85 TEMPERATURE (°C) -40 -15 10 35 60 85 TEMPERATURE (°C) SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX14585/85A toc07 VB SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX14585/85A toc08 VB DETECT THRESHOLD vs. TEMPERATURE 3.4 3.3 VB THRESHOLD (V) 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 -40 -15 10 35 60 85 TEMPERATURE (°C) 9 8 SUPPLY CURRENT (µA) 7 6 5 4 3 2 1 0 2.5 3.0 3.5 4.0 4.5 5.0 VAOR = 0V OR 3V VB RISING 60 VB CURRENT (µA) 50 40 30 20 10 0 TA = +85°C TA = +25°C TA = -40°C VB FALLING 5.5 0 5 10 15 20 25 30 SUPPLY VOLTAGE (V) VB VOLTAGE (V) ����������������������������������������������������������������� Maxim Integrated Products 6 MAX14585/85A toc09 10 70 3.5 MAX14585/85A toc06 4.0 COM_ ON-LEAKAGE CURRENT vs. TEMPERATURE 40 600 COM_ OFF-LEAKAGE CURRENT vs. TEMPERATURE MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Typical Operating Characteristics (continued) (VCC = 3.0V, TA = +25NC, unless otherwise noted.) TURN-OFF TIME vs. SUPPLY VOLTAGE MAX14585/85A toc10 TURN-ON TIME vs. SUPPLY VOLTAGE 90 80 TURN-ON TIME (µs) 70 60 50 40 30 20 10 0 FREQUENCY RESPONSE MAX14585/85A toc11 35 30 TURN-ON TIME (µs) 25 20 15 10 5 0 2.5 TOGGLE VB TOGGLE VB -10 -20 MAGNITUDE (dB) -30 -40 -50 -60 -70 -80 -90 -100 ON-LOSS ANO_ FROM COM_ UNC_ TO COM_ OFF-ISOLATION CROSSTALK UNC_ FROM COM_ ANO_ TO COM_ 3.0 3.5 4.0 4.5 5.0 5.5 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.1 1 10 FREQUENCY (MHz) 100 1000 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY RL = 600Ω MAX14585/85A toc13 UNC_ EYE DIAGRAM 0.5 0.4 DIFFERENTIAL SIGNAL (V) 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 10 MAX14585/85A toc14 1 THD+N (%) 0.1 0.01 0.001 10 100 1000 FREQUENCY (Hz) 10,000 100,000 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 TIME ((x10-9)s) ����������������������������������������������������������������� Maxim Integrated Products 7 MAX14585/85A toc12 40 100 0 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Pin Configuration TOP VIEW COM2 7 COM1 6 AOR 8 5 VCC VB 9 MAX14585 MAX14585A 4 GND UNC2 10 + 1 UNC1 2 ANO2 3 ANO1 UTQFN Pin Description PIN 1 2 3 4 5 6 7 8 9 10 NAME UNC1 ANO2 ANO1 GND VCC COM1 COM2 AOR VB UNC2 FUNCTION USB Input 1. Normally closed terminal for switch 1. Audio Input 2. Normally open terminal for switch 2. Audio Input 1. Normally open terminal for switch 1. Ground Positive Supply-Voltage Input. Bypass VCC to GND with a 0.1FF capacitor as close as possible to the device. Common Terminal for Switch 1 Common Terminal for Switch 2 Audio Override Input. Drive AOR low to have VB control the switch. Drive AOR high to connect COM_ to ANO_. AOR has an internal pulldown resistor to GND. VBUS Detection Input. If VB R VVBDET, COM_ connects to UNC_. Otherwise, COM_ connects to ANO_. USB Input 2. Normally closed terminal for switch 2. ����������������������������������������������������������������� Maxim Integrated Products 8 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Functional Diagrams/Truth Table VCC VCC MAX14585 UNC1 UNC2 VCCINT COM1 MAX14585A UNC1 UNC2 COM2 VCCINT COM1 COM2 ANO1 ANO2 ANO1 ANO2 VB VVBDET VVBDET VB GND AOR GND AOR MAX14585/MAX14585A VB > VVBDET < VVBDET X X = DON’T CARE AOR 0 0 1 UNC_ ON OFF OFF ANO_ OFF ON ON MAX14585 ANO_SHUNT ON OFF OFF Detailed Description The MAX14585/MAX14585A are high-ESD-protected single DPDT switches that operate from a 2.7V to 5.5V supply and are designed to multiplex Hi-Speed USB signals and AC-coupled analog signals. These switches combine the low on-capacitance (CON) and low on-resistance (RON) necessary for high-performance switching applications. These devices meet the requirements for USB low-speed and full-speed signaling. The negative signal capability of the analog channel allows signals below ground to pass through without distortion. The devices are bidirectional, allowing ANO_, UNC_, and COM_ to be configured as either inputs or outputs. Note that UNC_ and ANO_ are only protected against ESD up to Q2kV (HBM) and could require additional ESD protection if used as outputs. These devices feature a charge pump that generates a negative supply to allow analog signals as low as -1.8V to pass through ANO_ when VCC supply is greater than 2.7V. This allows AC-coupled signals that drop below ground to pass when operating from a single power supply. Analog-Signal Levels ����������������������������������������������������������������� Maxim Integrated Products 9 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection When VCC is below 2.7V and VB is less than 4.5V, the switches accept signals from 0 to 3.6V but do not switch according to the Functional Diagrams/Truth Table. The devices feature a VBUS detection input (VB) that connects COM_ to UNC_ when VB exceeds the VBUS detection threshold (VVBDET). For applications where VBUS is always present, drive the audio override input (AOR) high to connect ANO_ to COM_ (see the Functional Diagrams/Truth Table). Drive AOR low to have VB control the switch position. Drive AOR rail-to-rail to minimize power consumption. The VB input is capable of handling voltage up to 28V for higher VBUS application. In the case where the main power VCC is lost due to an event such as a dead battery, VB becomes the power supply if VB is greater than 4.5V. The switched 700I (typ) shunt resistors on the MAX14585 automatically discharge any capacitance at the ANO_ terminals when they are unconnected from COM_. This reduces audio click-and-pop sounds that can occur when switching between USB and audio sources. Applications Information ESD protection structures are incorporated on all pins to protect against electrostatic discharges up to Q2kV (HBM) encountered during handling and assembly. COM1 and COM2 are further protected against ESD up to Q15kV (HBM) without damage. The ESD structures withstand high ESD in both normal operation and when the devices are powered down. After an ESD event, the devices continue to function without latchup. ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Figure 4 shows the HBM. Figure 5 shows the current waveform it generates when discharged into a lowimpedance state. This model consists of a 100pF capacitor charged to the ESD voltage of interest that is then discharged into the device through a 1.5kI resistor. Extended ESD Protection VBUS Detection Input ESD Test Conditions Click-and-Pop Suppression (MAX14585) Human Body Model RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 1500Ω DISCHARGE RESISTANCE DEVICE UNDER TEST IP 100% 90% AMPERES 36.8% 10% 0 0 tRL Ir PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Cs 100pF STORAGE CAPACITOR TIME tDL CURRENT WAVEFORM Figure 4. Human Body ESD Test Model Figure 5. Human Body Current Waveform ���������������������������������������������������������������� Maxim Integrated Products 10 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection RC 50MΩ TO 100MΩ CHARGE CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 330Ω DISCHARGE RESISTANCE DEVICE UNDER TEST Cs 150pF STORAGE CAPACITOR The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. It does not specifically refer to integrated circuits. The major difference between tests done using the HBM and IEC 61000-4-2 is higher peak current in IEC 61000-4-2, because series resistance is lower in the IEC 61000-4-2 model. Hence, the ESD withstand voltage measured to IEC 61000-4-2 is generally lower than that measured using the HBM. Figure 6 shows the IEC 61000-4-2 model and Figure 7 shows the current waveform for the Q8kV, IEC 61000-4-2, Level 4, ESD Contact-Discharge Method. Hi-Speed USB requires careful PCB layout with 45I single-ended/90I differential controlled-impedance matched traces of equal lengths. Ensure that bypass capacitors are as close to the device as possible. Use large ground planes where possible. IEC 61000-4-2 Figure 6. IEC 61000-4-2 ESD Test Model I 100% 90% Layout I PEAK Ordering Information/ Selector Guide PART 10% TOP MARK AAY AAZ SHUNT RESISTOR Yes No PINPACKAGE 10 UTQFN 10 UTQFN MAX14585EVB+T 30ns 60ns t t r = 0.7ns to 1ns MAX14585AEVB+T Figure 7. IEC 61000-4-2 ESD Generator Current Waveform Note: All devices are specified over the -40°C to +85°C temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE 10 UTQFN PACKAGE CODE V101A1CN+1 OUTLINE NO. 21-0028 LAND PATTERN NO. 90-0287 ���������������������������������������������������������������� Maxim Integrated Products 11 MAX14585/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Revision History REVISION NUMBER 0 REVISION DATE 5/11 Initial release DESCRIPTION PAGES CHANGED — 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 12 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.