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 Benefits and Features SLow Power Consumption Low Supply Current 7µA (typ) Single 2.7V to 5.5V Supply Operation, VCC 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. SFlexible Design Dual Power-Supply Architecture, VB and VCC ANO_ Channel Override Control Input SHigh 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 3I (typ) On-Resistance 960MHz Bandwidth 0.04% THD+N Audio Channel ±15kV Human Body Model (HBM) ESD on COM1, COM2 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. SSaves Board Space Internal Shunt Resistor Reduces Clicks and Pops (MAX14585) 10-Pin, 1.4mm x 1.8mm UTQFN Package Applications Ordering Information appears at end of data sheet. Cell Phones For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX14585.related. PDAs and Handheld Devices Tablet PCs Typical Operating Circuit 3.0V 0.1µF VCC HI-SPEED USB TRANSCEIVER UNC1 MAX14585/MAX14585A VCCINT COM1 UNC2 COM2 AUDIO AMPLIFIER AN01 COMBINATION USB AND AUDIO CONNECTOR AN02 VBUS VB MAX14585 ONLY GND VVBDET 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 SYMBOL CONDITIONS MIN TYP MAX UNITS 5.5 V 14 FA POWER SUPPLY Power-Supply Range Supply Current VCC ISUPPLY Power-Supply Rejection Ratio PSRR 2.7 VCC = 4.2V, 0V < VAOR < 0.4V, VAOR R 1.4V f = 10kHz, VCC = 3.0 Q 0.3V, RCOM_= 50I VB Detect Threshold VVBDET VBUS rising, VCC R 2.7V VB Detect Hysteresis VVBDET_H VBUS falling, VCC R 2.7V VB Detect Leakage Current 7 100 3 3.3 dB 3.6 0.2 VB = 5.5V V V 40 FA ANALOG SWITCH Analog-Signal Range ANO_ On-Resistance UNC_ On-Resistance ANO_ On-Resistance Match Between Channels VUNC_ VCC R 2.7V for UNC_ VANO_, VCOM_ VCC R 2.7V for ANO_, COM_ RON(NO) RON(NC) DRON(NO) 0 min(3.6V, VCC) -1.8 min(3.6V, VCC) VCC = 3V, VANO_= -1.5V, +1.5V ICOM_ = 10mA 3 6 VCC = 3V, VUNC_= 0V to VCC, ICOM_ = 10mA 3 6 VB = 4.5V, VCC = 0V to 5.5V, VUNC_ = 0V to 2.5V, VAOR = 0V, ICOM_ = 10mA 3 6 VCC = 3V, VANO_ = 0V, ICOM_ = 10mA (Note 3) V I I 0.2 I ����������������������������������������������������������������� 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 SYMBOL CONDITIONS MIN TYP MAX UNITS UNC_ On-Resistance Match Between Channels DRON(NC) VCC = 3V, VUNC_ = 0V, ICOM_= 10mA (Note 3) 0.2 ANO_ On-Resistance Flatness RFLAT(NO) VCC = 3V, ICOM_ = 10mA, VANO_ = -1.5V to +1.5V (Note 4) 0.04 0.2 I UNC_ On-Resistance Flatness RFLAT(NC) VCC = 3V, ICOM_ = 10mA, VUNC_= 0V to VCC (Note 4) 0.04 0.2 I Shunt Switch Resistance AOR Pulldown Resistor RSH 1300 I 250 700 1200 kI IANO_ = 2mA, VCC R 2.7V RAOR I UNC_ Off-Leakage Current IUNC_(OFF) Switch open, VUNC_ = 2.5V, 0V VCOM_ = -1.5V, 2.5V, VCC = 3V -100 +100 nA ANO_ Off-Leakage Current IANO_(OFF) MAX14585A, switch open, VANO_ = 2.5V, 0V, VCOM_ = 0V, 2.5V, VCC = 3V -100 +100 nA COM_ Off-Leakage Current ICOM_(OFF) VCC = 0V, VCOM_ = 3.6V, VUNC_ = VANO_ = unconnected -10 +800 FA COM_ On-Leakage Current Turn-On Time USB mode VCC = 3V, VANO_ = 0V, 2.5V, unconnected, VCOM_ = 0V, 2.5V -200 +200 nA Audio mode VCC = 3V, VUNC_ = 0V, 2.5V, unconnected, VCOM_ = -1.5V, 2.5V -200 +200 nA ANO_ to COM_, Figure 1 VCC = 3V, VANO_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V or VB = 5V, VAOR = 0V to VCC 45 120 Fs UNC_ to COM_, Figure 1 VCC = 3V, VUNC_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V 45 120 Fs ANO_ from COM_, Figure 1 VCC = 3V, VANO_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V 8 40 Fs UNC_ from COM_, Figure 1 VCC = 3V, VUNC_ = 1.5V, RL = 50I; VAOR = 0V, VB = 0V to 5V or VB = 5V, VAOR = 0V to VCC 8 40 Fs RL = 50I, time delay between one side of the switch open and the other side closed 28 Fs ICOM_(ON) tON Turn-Off Time tOFF Break-Before-Make Time Delay tD Output Skew (Same Switch) tSK(P) Figure 2 40 ps Output Skew Between Switches tSK(O) Figure 2 40 ps ANO_ Off-Capacitance CNO_(OFF) VANO_ = 0.5VP-P, DC bias = 0V, f = 1MHz 2.5 pF UNC_ Off-Capacitance CNC_(OFF) VUNC_ = 0.5VP-P, DC bias = 0V, f = 1MHz 2.5 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 SYMBOL On-Capacitance CCOM_(ON) CONDITIONS MIN TYP MAX UNITS VCOM_ = 0.5VP-P, DC bias = 0V, f = 240MHz, RL = 50I 6.7 pF AC PERFORMANCE ANO_ -3dB Bandwidth BWNO RS = RL = 50I, VANO_ = 0dBm, Figure 3 960 MHz UNC_ -3dB Bandwidth BWNC RS = RL = 50I, VUNC_ = 0dBm, Figure 3 960 MHz Off-Isolation f = 100kHz, VCOM_ = 1VRMS, RL = 50I, Figure 3 -84 dB Crosstalk f = 100kHz, VCOM_ = 1VRMS, RL = 50I, Figure 3 (Note 5) -86 dB 0.042 % Total Harmonic Distortion Plus Noise THD+N ANO_ to COM_, f = 20Hz to 20kHz, VCOM_ = 0.5VP-P, DC bias = 0V, RL = 600I LOGIC INPUT AOR Input Logic-High VIH VCC R 2.7V 1.4 AOR Input Logic-Low VIL VCC R 2.7V AOR Input Leakage Current IIN VAOR = 0V or VCC, VCC R 2.7V V -22 0.4 V +22 FA ESD PROTECTION COM1, COM2 All Other Pins Human Body Model Q15 IEC 61000-4-2 Air Gap Discharge Q8 IEC 61000-4-2 Contact Discharge Q8 Human Body Model Q2 kV kV 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. LOGIC INPUT MAX14585 MAX14585A VIN_ COM_ ANO_ OR UNC_ RL CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VIN_ RL + RON ) 50% t OFF CL VOUT SWITCH OUTPUT ( VIL VOUT CONTROL LOGIC INPUT tR < 5ns tF < 5ns VIH 0V 0.9 x V0UT 0.1 x VOUT t ON CONTROL DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. 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 VIN+ MAX14585 MAX14585A UNC1 OR ANO1 COM1 tPLH = tPLHX OR tPLHY VOUT+ tPHL = tPHLX OR tPHLY tSK(O) = |tPLHX - tPLHY| OR |tPHLX - tPHLY| tSK(P) = |tPLHX - tPHLX| OR |tPLHY - tPHLY| RL RS VIN- UNC2 OR ANO2 COM2 CONTROL DEPENDS ON SWITCH CONFIGURATION. VOUTRL CONTROL VIL TO VIH tINFALL tINRISE VCC 90% VIN+ 90% 50% 50% 10% 0V 10% VCC VIN- 50% 50% 0V tOUTRISE tPLHX tOUTFALL tPHLX VCC 90% VOUT+ 90% 50% 50% 10% 0V 10% VCC 50% VOUT- 50% 0V tPHLY tPLHY Figure 2. Output Skew COM1 UNC1 50Ω MAX14585 MAX14585A ANO1* 50Ω VIN VOUT NETWORK ANALYZER OFF-ISOLATION = 20log 50Ω VOUT VIN V ON-LOSS = 20log OUT VIN MEAS 50Ω REF V CROSSTALK = 20log OUT VIN 50Ω 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.) 2.9 VCC = 5V 2.8 3.0 VCC = 2.7V 2.9 2.8 2.7 2.7 2.6 2.6 2.5 2 3 4 VCC = 5V TA = +25°C 3.2 3.0 TA = -40°C 2.8 2.6 2.4 VCC = 3V IUNC_ = 10mA 2.2 2.0 -1 -2 0 MAX14585/85A toc03 TA = +85°C 3.4 1 2 3 4 0.5 0 1.0 1.5 2.0 2.5 VCOM_ (V) ANO_ ON-RESISTANCE vs. COM_ VOLTAGE COM_ ON-LEAKAGE CURRENT vs. TEMPERATURE COM_ OFF-LEAKAGE CURRENT vs. TEMPERATURE TA = +25°C TA = +85°C 3.2 3.0 2.8 TA = -40°C 2.6 2.4 VCC = 3V IANO_ = 10mA 2.2 2.0 -2 -1 0 1 2 30 25 20 15 10 0 3 -15 10 35 60 TA = +85°C 6 TA = +25°C TA = -40°C 3 VAOR = 0V OR 3V -15 50 40 30 20 2 4.5 SUPPLY VOLTAGE (V) 5.0 5.5 60 85 VB DETECT THRESHOLD vs. TEMPERATURE VB RISING 3.4 3.3 3.2 3.1 3.0 VB FALLING 2.9 2.8 2.6 0 0 35 2.7 10 1 10 3.5 VB THRESHOLD (V) 7 4.0 -40 TEMPERATURE (°C) 60 VB CURRENT (µA) 8 3.5 200 85 VB SUPPLY CURRENT vs. SUPPLY VOLTAGE 70 MAX14585/85A toc07 9 3.0 300 0 -40 SUPPLY CURRENT vs. SUPPLY VOLTAGE 2.5 400 TEMPERATURE (°C) 10 4 500 VCC = 0V VCOM_ = 3.6V 100 5 VCOM_ (V) 5 600 MAX14585/85A toc09 3.4 VCOM_ = 2.5V 35 OFF-LEAKAGE CURRENT (µA) 3.6 40 ON-LEAKAGE CURRENT (nA) MAX14585/85A toc04 3.8 3.0 MAX14585/85A toc06 VCOM_ (V) MAX14585/85A toc05 VCOM_ (V) 4.0 SUPPLY CURRENT (µA) 3.6 2.5 1 0 ON-RESISTANCE (Ω) 3.1 3.8 ON-RESISTANCE (Ω) 3.0 IANO_ = 10mA 3.2 UNC_ ON-RESISTANCE vs. COM_ VOLTAGE 4.0 MAX14585/85A toc08 ON-RESISTANCE (Ω) 3.1 MAX14585/85A toc02 VCC = 2.7V 3.2 ANO_ ON-RESISTANCE vs. COM_ VOLTAGE 3.3 ON-RESISTANCE (Ω) IUNC_ = 10mA MAX14585/85A toc01 UNC_ ON-RESISTANCE vs. COM_ VOLTAGE 3.3 0 5 10 15 20 VB VOLTAGE (V) 25 30 2.5 -40 -15 10 35 60 85 TEMPERATURE (°C) ����������������������������������������������������������������� Maxim Integrated Products 6 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.) 20 UNC_ FROM COM_ 15 10 UNC_ TO COM_ 60 50 40 30 -10 -30 -40 -50 10 -90 0 0 -100 3.5 4.0 4.5 5.0 5.5 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 4.5 5.5 1 0.1 0.1 0.01 10 100 1000 FREQUENCY (MHz) UNC_ EYE DIAGRAM MAX14585/85A toc14 0.5 0.4 DIFFERENTIAL SIGNAL (V) MAX14585/85A toc13 RL = 600Ω 1 THD+N (%) 5.0 SUPPLY VOLTAGE (V) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 10 CROSSTALK -80 20 3.0 OFF-ISOLATION -60 5 2.5 ON-LOSS -20 -70 ANO_ TO COM_ MAX14585/85A toc12 80 70 0 MAGNITUDE (dB) ANO_ FROM COM_ 25 TOGGLE VB 90 TURN-ON TIME (µs) 30 TURN-ON TIME (µs) MAX14585/85A toc10 TOGGLE VB 35 FREQUENCY RESPONSE TURN-ON TIME vs. SUPPLY VOLTAGE 100 MAX14585/85A toc11 TURN-OFF TIME vs. SUPPLY VOLTAGE 40 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 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/MAX14585A Hi-Speed USB and Audio Switches with Negative Signal Capability and High-Voltage-Tolerable VBUS Detection Pin Configuration TOP VIEW AOR 8 VB 9 UNC2 10 + COM2 COM1 7 6 MAX14585 MAX14585A 1 2 UNC1 ANO2 5 VCC 4 GND 3 ANO1 UTQFN Pin Description PIN NAME FUNCTION 1 UNC1 USB Input 1. Normally closed terminal for switch 1. 2 ANO2 Audio Input 2. Normally open terminal for switch 2. 3 ANO1 Audio Input 1. Normally open terminal for switch 1. 4 GND Ground 5 VCC Positive Supply-Voltage Input. Bypass VCC to GND with a 0.1FF capacitor as close as possible to the device. 6 COM1 Common Terminal for Switch 1 7 COM2 Common Terminal for Switch 2 8 AOR 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. 9 VB VBUS Detection Input. If VB R VVBDET, COM_ connects to UNC_. Otherwise, COM_ connects to ANO_. 10 UNC2 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 MAX14585A VCCINT UNC1 VCCINT UNC1 COM1 COM1 UNC2 UNC2 COM2 COM2 ANO1 ANO1 ANO2 ANO2 VB VB VVBDET GND VVBDET GND AOR MAX14585/MAX14585A VB AOR > VVBDET < VVBDET X AOR MAX14585 UNC_ ANO_ ANO_SHUNT 0 ON OFF ON 0 OFF ON OFF 1 OFF ON OFF X = DON’T CARE 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. Analog-Signal Levels 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. ����������������������������������������������������������������� 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. Applications Information 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. VBUS Detection Input 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. 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. ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Click-and-Pop Suppression (MAX14585) 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. RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE Cs 100pF RD 1500Ω ESD Test Conditions Human Body Model 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. IP 100% 90% DISCHARGE RESISTANCE STORAGE CAPACITOR Extended ESD Protection Ir AMPERES DEVICE UNDER TEST 36.8% 10% 0 0 Figure 4. Human Body ESD Test Model PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) tRL TIME tDL CURRENT WAVEFORM 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 DISCHARGE RESISTANCE CHARGE CURRENT LIMIT RESISTOR HIGHVOLTAGE DC SOURCE IEC 61000-4-2 RD 330Ω Cs 150pF STORAGE CAPACITOR DEVICE UNDER TEST 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. Layout Figure 6. IEC 61000-4-2 ESD Test Model 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. I 100% I PEAK 90% Ordering Information/ Selector Guide 10% t r = 0.7ns to 1ns t 30ns 60ns Figure 7. IEC 61000-4-2 ESD Generator Current Waveform PART TOP MARK SHUNT RESISTOR PINPACKAGE MAX14585EVB+T AAY Yes 10 UTQFN MAX14585AEVB+T AAZ No 10 UTQFN 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 PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 10 UTQFN V101A1CN+1 21-0028 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 REVISION DATE 0 5/11 DESCRIPTION Initial release 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 © 2011 Maxim Integrated Products 12 Maxim is a registered trademark of Maxim Integrated Products, Inc.