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| 19-3376; Rev 1; 1/05 Quad SPST, High-Bandwidth, Signal Line Protection Switch General Description The MAX4854H/MAX4854HL analog switches operate from a single +2V to +5.5V supply and can handle signals greater than the supply rail. These devices feature four low on-resistance (7) single-pole/single-throw (SPST) switches, with 27.5pF on-capacitance, making them ideal for data signals. If the input signal exceeds the supply rail, the switches become high impedance and prevent the signal from feeding through to the output. The MAX4854H/MAX4854HL are available in the space-saving (3mm x 3mm), 16-pin, thin QFN package and operate over the extended (-40C to +85C) temperature range. Features o USB 2.0 Full Speed (12MB) and USB 1.1 Signal Switching o Overvoltage Protection if Signal Exceeds VCC o 150MHz -3dB Bandwidth o 27.5pF On-Capacitance o +2V to +5.5V Supply Range o 7 On-Resistance o Low 10A Supply Current o 1.8V Logic Compatible o Available in a Space-Saving (3mm x 3mm) 16-Pin TQFN Package MAX4854H/MAX4854HL Applications USB Switching High-Bandwidth Data Switching Cellular Phones Notebook Computers PDAs and Other Handheld Devices Ordering Information PART MAX4854HETE TEMP RANGE -40C to +85C PINPACKAGE 16 TQFN-EP* 16 TQFN-EP* TOP MARK ACD ACX MAX4854HLETE -40C to +85C *EP = Exposed paddle. Block Diagram/Truth Table Pin Configuration VCC 14 IN1 MAX4854H MAX4854H MAX4854HL NO1 (NC1) 7 IN_ COM1 IN1 COM2 0 1 NO_ OFF ON N.C. IN2 2 3 4 NO1 (NC1) 1 16 15 13 IN4 12 COM4 11 N.C. 10 NO4 (NC4) 9 IN3 8 COM3 TOP VIEW SWITCHES SHOWN FOR LOGIC 0 INPUT COM1 5 NO2 (NC2) NO2 (NC2) 7 MAX4854H MAX4854HL IN2 COM3 MAX4854HL IN_ IN3 0 ON OFF COM4 1 NC_ COM2 NO3 (NC3) 7 6 GND 7 NO3 (NC3) NO4 (NC4) 7 IN4 SWITCHES SHOWN FOR LOGIC 1 INPUT THIN QFN CONNECT EXPOSED PADDLE TO PC BOARD GROUND. ( ) INDICATES THE MAX4854HL ( ) INDICATES THE MAX4854HL ________________________________________________________________ Maxim Integrated Products 1 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. Quad SPST, High-Bandwidth, Signal Line Protection Switch MAX4854H/MAX4854HL ABSOLUTE MAXIMUM RATINGS VCC, IN_, COM_, NO_, NC_ to GND (Note 1) ...........-0.3V to +6.0V Closed Switch Continuous Current COM_, NO_, NC_.........50mA Peak Current COM_, NO_, NC_ (pulsed at 1ms, 50% duty cycle) ....................................100mA Peak Current COM_, NO_, NC_ (pulsed at 1ms, 10% duty cycle) ....................................120mA Continuous Power Dissipation (TA = +70C) 16-Pin Thin QFN (derate 20.8mW/C above +70C) .....1667mW Operating Temperature Range................................-40C to +85C Junction Temperature ...........................................................+150C Storage Temperature Range .................................-65C to +150C Lead Temperature (soldering, 10s)......................................+300C Note 1: Signals on NO_/NC_ or COM_ exceeding GND are clamped by internal diodes. Signals on IN exceeding GND are clamped by an internal diode. Limit the forward-diode current to the maximum current rating. 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 = +2.7V to +5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25C, unless otherwise noted.) (Note 2) PARAMETER Supply Voltage Supply Current ANALOG SWITCH Analog Signal Range On-Resistance On-Resistance Match Between Channels (Notes 3, 4) On-Resistance Flatness (Note 5) NO_ or NC_ Off-Leakage Current COM_ On-Leakage Current DYNAMIC CHARACTERISTICS Signal Over Rail to High-Z Switching Time High-Z to Low-Z Switching Time Skew (Note 3) Propagation Delay (Note 3) Turn-On Time tSKEW tPD tON VNO_ or VNC_ = VCC to (VCC + 0.5V), VCC < 5V (Figure 1) VNO_ or VNC_ = (VCC + 0.5V) to VCC, VCC < 5V (Figure 1) RS = 39, CL = 50pF (Figure 2) RS = 39, CL = 50pF (Figure 2) VCC = 3V, VNO_ or VNC_ = 1.5V, RL = 300, CL = 50pF (Figure 1) VCC = 3V, VNO_ or VNC_ = 1.5V, RL = 300, CL = 50pF (Figure 1) TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C 30 0.5 0.5 0.15 0.9 40 1 1 1 2 60 ns 100 40 ns 60 s s ns ns VNO_, VCOM_ RON VCC = 3V, ICOM_ = 10mA, VNO_ or VNC_ = 0 to VCC VCC = 3V, ICOM = 10mA, or VNO_ or VNC_ = 1.5V VCC = 3V, ICOM_ = 10mA, VNO_ or VNC_ = 1V, 2V, 3V VCC = 5.5V, VNO_ or VNC_ = 1V or 4.5V, VCOM_ = 4.5V or 1V VCC = 5.5V; VNO_ or VNC_ = 1V, 4.5V, or floating; VCOM_ = 1V, 4.5V, or floating TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C TA = +25C TA = -40C to +85C -2 -10 -2 -12.5 2.5 0.2 0 7 VCC 9 10 0.4 0.5 3.75 4 +2 +10 +2 nA +12.5 nA V SYMBOL VCC ICC VCC = 5.5V, VIN_ = 0V or VCC CONDITIONS MIN 2.0 10 TYP MAX 5.5 20 UNITS V A RON RFLAT IOFF ION Turn-Off Time tOFF 2 _______________________________________________________________________________________ Quad SPST, High-Bandwidth, Signal Line Protection Switch ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.7V to +5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25C, unless otherwise noted.) (Note 2) PARAMETER Charge Injection Off-Isolation (Note 6) Crosstalk -3dB Bandwidth Total Harmonic Distortion NO_ Off-Capacitance COM On-Capacitance DIGITAL I/O (IN_) Input-Logic High Voltage Input-Logic Low Voltage Input Leakage Current VIH VIL IIN VCC = 2V to 3.6V VCC = 3.6V to 5.5V VCC = 2V to 3.6V VCC = 3.6V to 5.5V VIN_ = 0 or 5.5V -0.5 1.4 1.8 0.5 0.8 +0.5 V V A SYMBOL Q VISO VCT BW THD COFF CON CONDITIONS VCOM_ = 1.5V, RS = 0, CL = 1nF (Figure 3) f = 100kHz, VCOM_= 1VRMS, RL = 50, CL = 5pF (Figure 4) f = 1MHz, VCOM_= 1VRMS, RL = 50, CL = 5pF (Figure 4) Signal = 0dBm, RL = 50, CL = 5pF (Figure 4) f = 20Hz to 20kHz, VCOM_ = 1V + 2VP-P, RL = 600 f = 1MHz (Figure 5) f = 1MHz (Figure 5) MIN TYP 8 -80 -95 150 0.04 12 27.5 MAX UNITS pC dB dB MHz % pF pF MAX4854H/MAX4854HL Note 2: Specifications are 100% tested at TA = +85C only, and guaranteed by design and characterization over the specified temperature range. Note 3: Guaranteed by design and characterization; not production tested. Note 4: RON = RON(MAX) - RON(MIN). Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. Note 6: Off-Isolation = 20log10 (VCOM_ / VNO_), VCOM_ = output, VNO_ = input to off switch. Typical Operating Characteristics (VCC = 3.0V, TA = +25C, unless otherwise noted.) ON-RESISTANCE vs. COM VOLTAGE MAX4854H toc01 ON-RESISTANCE vs. COM VOLTAGE MAX4854H toc02 ON-RESISTANCE vs. COM VOLTAGE VCC = 5.0V 5.0 ON-RESISTANCE () 4.5 4.0 3.5 3.0 2.5 2.0 1.5 TA = -40C 0 1 2 3 4 5 TA = +25C TA = +85C MAX4854H toc03 45 40 35 ON-RESISTANCE () 30 25 20 15 10 5 0 0 2 4 6 COM VOLTAGE (V) VCC = 2.3V VCC = 2.5V VCC = 3.0V VCC = 5.0V VCC = 2.0V VCC = 1.8V 8 7 VCC = 3.0V TA = +85C 5.5 ON-RESISTANCE () 6 5 TA = +25C 4 TA = -40C 3 2 0 0.5 1.0 1.5 2.0 2.5 3.0 COM VOLTAGE (V) COM VOLTAGE (V) _______________________________________________________________________________________ 3 Quad SPST, High-Bandwidth, Signal Line Protection Switch MAX4854H/MAX4854HL Typical Operating Characteristics (continued) (VCC = 3.0V, TA = +25C, unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX4854H toc04 TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE MAX4854H toc05 TURN-ON/TURN-OFF TIME vs. TEMPERATURE MAX4854H toc06 7 60 50 40 tON 30 20 tOFF 10 0 34 32 tON 30 28 26 tOFF 24 22 20 TURN-ON/TURN-OFF TIME (ns) 6 SUPPLY CURRENT (A) TA = -40C 5 4 TA = +25C 3 TA = +85C 2 1.5 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE (V) 1.5 2.5 3.5 4.5 5.5 TURN-ON/TURN-OFF TIME (ns) -40 -15 10 35 60 85 SUPPLY VOLTAGE (V) TEMPERATURE (C) LOGIC THRESHOLD vs. SUPPLY VOLTAGE MAX4854H toc07 CHARGE INJECTION vs. COM VOLTAGE MAX4854H toc08 LEAKAGE CURRENT vs. TEMPERATURE 1.4 LEAKAGE CURRENT (nA) 1.2 1.0 0.8 0.6 0.4 0.2 COM OFF-LEAKAGE COM ON-LEAKAGE MAX4854H toc09 1.6 40 1.6 1.4 LOGIC THRESHOLD (V) VIN RISING 1.2 CHARGE INJECTION (pC) 30 VCC = 3V 20 VCC = 5V 1.0 VIN FALLING 0.8 10 0.6 1.5 2.5 3.5 4.5 5.5 SUPPLY VOLTAGE (V) 0 0 1 2 3 4 5 COM VOLTAGE (V) 0 -40 -15 10 35 60 85 TEMPERATURE (C) FREQUENCY RESPONSE MAX4854H toc10 TOTAL HARMONIC DISTORTION vs. FREQUENCY RL = 600 MAX4854H toc11 SWITCH ENTERING HIGH-IMPEDANCE STATE 20 0 -20 -40 ON-RESPONSE 1 MAX4854H toc12 VCC = 3.0V VNC 2V/div 0V FREQUENCY RESPONSE (dB) THD (%) OFF-RESPONSE -60 -80 -100 0.1 1 10 FREQUENCY (MHz) 100 1000 CROSSTALK 0.1 VCOM 0V 0.01 10 100 1k FREQUENCY (Hz) 10k 100k HI-Z STATE HI-Z STATE 200s/div 4 _______________________________________________________________________________________ Quad SPST, High-Bandwidth, Signal Line Protection Switch Pin Description PIN 1, 5, 7, 10 1, 5, 7, 10 2, 11 3 4 6 8 9 12 13 14 15 16 -- NAME FUNCTION NO1, NO2, Normally Open Terminals for Analog Switch (MAX4854H) NO3, NO4 NC1, NC2, Normally Closed Terminals for Analog Switch (MAX4854HL) NC3, NC4 N.C. IN2 COM2 GND COM3 IN3 COM4 IN4 VCC IN1 COM1 EP No Connection. Internally not connected. Digital Control Input for Analog Switch 2. A logic-low (MAX4854H) or logic-high (MAX4854HL) on IN2 opens switch 2 and a logic-high (MAX4854H) or logic-low (MAX4854HL) on IN2 connects COM2 to NO2. Common Terminal for Analog Switch 2 Ground Common Terminal for Analog Switch 3 Digital Control Input for Analog Switch 3. A logic-low (MAX4854H) or logic-high (MAX4854HL) on IN3 opens switch 3 and a logic-high (MAX4854H) or logic-low (MAX4854HL) on IN3 connects COM3 to NO3. Common Terminal for Analog Switch 4 Digital Control Input for Analog Switch 4. A logic-low (MAX4854H) or logic-high (MAX4854HL) on IN4 opens switch 4 and a logic-high (MAX4854H) or logic-low (MAX4854HL) on IN4 connects COM4 to NO4. Supply Voltage. Bypass VCC to GND with a 0.01F capacitor as close to the pin as possible. Digital Control Input for Analog Switch 1. A logic-low (MAX4854H) or logic-high (MAX4854HL) on IN1 opens switch 1 and a logic-high (MAX4854H) or logic-low (MAX4854HL) on IN1 connects COM1 to NO1. Common Terminal for Analog Switch 1 Exposed Paddle. Connect to PC board ground plane. MAX4854H/MAX4854HL Detailed Description The MAX4854H/MAX4854HL quad SPST switches have low on-resistance, operate from a +2V to +5.5V supply, and are fully specified for nominal 3.0V applications. These devices feature overvoltage protection by putting the switch into high-impedance mode when the switch input exceeds VCC. These switches have low 27.5pF on-channel capacitance, which allows for 12Mbps switching of the data signals for USB 2.0 full speed/1.1 applications. The MAX4854H/MAX4854HL are designed to switch D+ and D- USB signals with a guaranteed skew of less than 1ns (see Figure 2) as measured from 50% of the input signal to 50% of the output signal. high to +5.5V, allowing for mixing of logic levels in a system. Driving IN_ rail-to-rail minimizes power consumption. For a +2V supply voltage, the logic thresholds are 0.5V (low) and 1.4V (high); for a +5V supply voltage, the logic thresholds are 0.8V (low) and 1.8V (high). Analog Signal Levels The on-resistance of these switches changes very little for analog input signals across the entire supply voltage range (see the Typical Operating Characteristics). The switches are bidirectional, so the NO_ and COM_ pins can be either inputs or outputs. Power-Supply Sequencing Caution: Do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the device. Proper power-supply sequencing is recommended for all CMOS devices. Always apply VCC before applying analog signals, especially if the analog signal is not current limited. Applications Information Digital Control Inputs The logic inputs (IN_) accept up to +5.5V even if the supply voltages are below this level. For example, with a +3.3V VCC supply, IN_ can be driven low to GND and _______________________________________________________________________________________ 5 Quad SPST, High-Bandwidth, Signal Line Protection Switch MAX4854H/MAX4854HL Test Circuits/Timing Diagrams MAX4854H VCC V CC COM_ LOGIC INPUT VOUT RL IN_ LOGIC INPUT GND CL SWITCH OUTPUT VOUT 0V t ON VCC 50% 0V t OFF 0.9 x V0UT 0.9 x VOUT t R < 20ns t F < 20ns VNO NO_ CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VNO RL + RON SWITCH INPUT VCC + 0.5V tHIZB tHIZ NORMAL MODE HIGH-Z MODE NORMAL MODE ( ) IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 1. Switching Time tri 50% TxD+ Rs A B CL INPUT A90% 50% INPUT A 10% 90% tskew_i 10% tfi tro 50% 90% TxDRs Rs = 39 CL = 50pF A- BCL OUTPUT B OUTPUT B- 10% tskew_o 90% 50% 10% tfo |tro - tri| DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. |tfo - tfi| DELAY DUE TO SWITCH FOR FALLING INPUT AND FALLING OUTPUT SIGNALS. |tskew_o| CHANGE IN SKEW THROUGH THE SWITCH FOR OUTPUT SIGNALS. |tskew_i| CHANGE IN SKEW THROUGH THE SWITCH FOR INPUT SIGNALS. Figure 2. Output Signal Skew 6 _______________________________________________________________________________________ Quad SPST, High-Bandwidth, Signal Line Protection Switch MAX4854H/MAX4854HL V CC VOUT VOUT VOUT CL GND IN_ OFF IN_ MAX4854HL MAX4854H VCC RGEN NO_ COM_ V GEN OFF ON ON Q = V OUT x C L OFF VIL TO VIH IN_ MAX4854H OFF Figure 3. Charge Injection +5V 10nF NETWORK ANALYZER VCC 0V OR VCC IN_ COM1 VIN 50 50 V OFF-ISOLATION = 20log OUT VIN V ON-LOSS = 20log OUT VIN V CROSSTALK = 20log OUT VIN MAX4854H/ MAX4854HL NO1*/ NC1 GND VOUT MEAS REF 50 50 MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" OR NO_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" OR NO_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED. *FOR CROSSTALK THIS PIN IS NO2. COM2 IS OPEN. Figure 4. On-Loss, Off-Isolation, and Crosstalk Chip Information 10nF V CC TRANSISTOR COUNT: 735 PROCESS: CMOS MAX4854H/ MAX4854HL IN VIL OR VIH VCC COM_ CAPACITANCE METER NO_ f = 1MHz GND Figure 5. Channel Off-/On-Capacitance _______________________________________________________________________________________ 7 Quad SPST, High-Bandwidth, Signal Line Protection Switch MAX4854H/MAX4854HL 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.) D2 b 0.10 M C A B D D/2 D2/2 E/2 E2/2 C L E (NE - 1) X e E2 L e k (ND - 1) X e C L C L 0.10 C 0.08 C A A2 A1 L C L L e e PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm 21-0136 E 1 2 EXPOSED PAD VARIATIONS DOWN BONDS ALLOWED NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3. N IS THE TOTAL NUMBER OF TERMINALS. 4. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. 5. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm FROM TERMINAL TIP. 6. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9. DRAWING CONFORMS TO JEDEC MO220 REVISION C. PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm 21-0136 E 2 2 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 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. 12x16L QFN THIN.EPS |
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