19-3472; Rev 0; 10/04 7Ω Quad SPST Switches with Over-Rail Signal Handling Features ♦ USB 2.0 Full Speed (12Mbps) and USB 1.1 Signal Switching ♦ Switches Signals Greater than VCC ♦ 7Ω On-Resistance ♦ 30pF On-Capacitance ♦ 150MHz, -3dB Bandwidth ♦ 1.8V Logic Compatibility ♦ +2V to +5.5V Supply Range ♦ Low 0.01µA Supply Current ♦ Available in a Space-Saving, 3mm x 3mm, 16-Pin TQFN Package Ordering Information Applications USB Switching PART Cellular Phones Notebook Computers MAX4854ETE PDAs and Other Handheld Devices TEMP RANGE PINPACKAGE TOP MARK -40°C to +85°C 16 TQFN-EP* ACE *EP = Exposed paddle. Pin Configuration IN1 VCC IN4 TOP VIEW COM1 Block Diagram/Truth Table 16 15 14 13 MAX4854 7Ω 7Ω N.C. 2 11 N.C. IN2 3 COM2 4 MAX4854 10 NO4 IN2 9 IN3 COM4 NO4 7Ω IN4 5 6 7 8 COM3 IN3 NO3 7Ω GND COM3 NO3 SWITCHES SHOWN FOR LOGIC "0" INPUT IN1 COM2 NO2 NO_ OFF ON 12 COM4 NO2 IN_ 0 1 1 COM1 NO1 TRUTH TABLE NO1 3mm x 3mm THIN QFN CONNECT EXPOSED PADDLE TO PC BOARD GROUND. ________________________________________________________________ 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 MAX4854 General Description The MAX4854 quad single-pole/single-throw (SPST) switch operates from a single +2V to +5.5V supply and can handle signals greater than the supply rail. This switch features low 7Ω on-resistance with 30pF oncapacitance, making it ideal for switching data signals. For over-rail applications, this device passes signals greater than the positive supply (up to +5.5V) through the switch without distortion. The MAX4854 is available in the space-saving, 16-pin, 3mm x 3mm thin QFN package and operates over the -40°C to +85°C extended temperature range. MAX4854 7Ω Quad SPST Switches with Over-Rail Signal Handling ABSOLUTE MAXIMUM RATINGS VCC, IN_, COM_, NO_ to GND (Note 1) ................-0.3V to +6.0V Closed-Switch Continuous Current COM_, NO_, NC_ .....±50mA Peak Current COM_, NO_ (pulsed at 1ms, 50% duty cycle)................................±100mA Peak Current COM_, NO_ (pulsed at 1ms, 10% duty cycle)................................±120mA Continuous Power Dissipation (TA = +70°C) 16-Pin Thin QFN (derate 20.8mW/°C above +70°C) ....1667mW 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: Signals on IN_, NO_, or COM_ below GND are clamped by internal diodes. Limit forward-diode current to 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 = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL Supply Voltage VCC Supply Current ICC CONDITIONS MIN TYP 2.0 VCC = +5.5V, VIN_ = 0 or VCC 0.01 MAX UNITS 5.5 V 1 µA 5.5 V ANALOG SWITCH Analog Signal Range VNO_, VCOM_ 0 RON VCC = +3V, ICOM_ = 10mA, VNO_ = 0 to +5.5V On-Resistance Match Between Channels (Notes 3, 4) ∆RON VCC = +3V, ICOM = 10mA, VNO_ = +1.5V On-Resistance Flatness (Note 5) RFLAT NO_ Off-Leakage Current COM_ On-Leakage Current On-Resistance TA = +25°C 7 TA = -40°C to +85°C 9 10 TA = +25°C 0.2 TA = -40°C to +85°C 0.4 Ω 0.5 VCC = +3V; ICOM_ = 10mA; VNO_ = +1V, +2V, +3V TA = +25°C 2.5 IOFF VCC = +5.5V, VNO_ = +1V or +4.5V, VCOM_ = +4.5V or +1V TA = +25°C -2 +2 TA = -40°C to +85°C -10 +10 ION VCC = +5.5V; VNO_ = +1V, +4.5V, or floating; VCOM_ = +1V, +4.5V, or floating TA = +25°C TA = -40°C to +85°C TA = -40°C to +85°C Ω 3.75 4.0 -2 +2 - 12.5 +12.5 Ω nA nA DYNAMIC CHARACTERISTICS Skew (Note 3) tSKEW RS = 39Ω, CL = 50pF, Figure 2 0.1 1 ns Propagation Delay (Note 3) tPD RS = 39Ω, CL = 50pF, Figure 2 0.9 2 ns Turn-On Time tON VCC = +3V, VNO_ = +1.5V, RL = 300Ω, CL = 50pF, Figure 1 TA = +25°C Turn-Off Time tOFF VCC = +3V, VNO_ = +1.5V, RL = 300Ω, CL = 50pF, Figure 1 TA = +25°C Charge Injection Q Off-Isolation (Note 6) -3dB Bandwidth 2 VCOM_ = +1.5V, RS = 0Ω, CL = 1nF, Figure 3 BW 60 100 30 TA = -40°C to +85°C f = 100kHz, VCOM_ = 1VRMS, RL = 50Ω, CL = 5pF, Figure 4 Crosstalk 40 TA = -40°C to +85°C 40 60 ns ns 8 pC -80 dB f = 1MHz, VCOM_ = 1VRMS, RL = 50Ω, CL = 5pF, Figure 4 -95 dB Signal = 0dBm, RL = 50Ω, CL = 5pF, Figure 4 150 MHz _______________________________________________________________________________________ 7Ω Quad SPST Switches with Over-Rail Signal Handling (VCC = +2.7V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.0V, TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS NO_ Off-Capacitance COFF f = 1MHz, Figure 5 13 pF COM On-Capacitance CON f = 1MHz, Figure 5 30 pF Total Harmonic Distortion THD f = 20Hz to 20kHz, VCOM_ = 1V +2VP-P, RL = 600Ω 0.04 % DIGITAL I/O (IN_) Input Logic High Voltage VIH Input Logic Low Voltage VIL Input Leakage IIN VCC = +2V to +3.6V 1.4 VCC = +3.6V to +5.5V 1.8 V VCC = +2V to +3.6V 0.5 VCC = +3.6V to +5.5V 0.8 VIN_ = 0 or +5.5V -0.5 V +0.5 µA Note 2: Specifications are 100% tested at TA = +85°C 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 = +25°C, unless otherwise noted.) ON-RESISTANCE vs. COM VOLTAGE VCC = 1.8V VCC = 2.0V VCC = 2.3V VCC = 2.5V VCC = 3.0V VCC = 5.0V 10 5 ON-RESISTANCE (Ω) 25 15 6 5 4 TA = +25°C 3 TA = -40°C 2 4 4.0 TA = +25°C 3.5 3.0 2.0 2 COM VOLTAGE (V) TA = +85°C 4.5 2.5 0 0 VCC = 5.0V 5.0 TA = +85°C 30 20 VCC = 3.0V 7 ON-RESISTANCE (Ω) ON-RESISTANCE (Ω) 35 5.5 MAX4854 toc02 MAX4854 toc01 40 ON-RESISTANCE vs. COM VOLTAGE 8 MAX4854 toc03 ON-RESISTANCE vs. COM VOLTAGE 45 6 TA = -40°C 1.5 0 2 4 COM VOLTAGE (V) 6 0 1 2 3 4 5 6 COM VOLTAGE (V) _______________________________________________________________________________________ 3 MAX4854 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VCC = 3.0V, TA = +25°C, unless otherwise noted.) TURN-ON/TURN-OFF TIME vs. SUPPLY VOLTAGE TA = +85°C 0.6 0.4 TA = +25°C tON 30 20 tOFF 10 TA = -40°C 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 2.5 LOGIC THRESHOLD vs. SUPPLY VOLTAGE VIN RISING 1.2 1.0 VIN FALLING 4.5 5.5 0.6 VCC = 3V 10 5.5 4.5 10 35 1.2 COM ON-LEAKAGE 1.0 0.8 COM OFF-LEAKAGE 0.6 0.4 0.2 0 0 1 2 3 4 5 -40 -15 10 35 60 COM VOLTAGE (V) TEMPERATURE (°C) FREQUENCY RESPONSE TOTAL HARMONIC DISTORTION vs. FREQUENCY SWITCH PASSING SIGNALS ABOVE SUPPLY VOLTAGE MAX4854 toc11 MAX4854 toc10 RL = 600Ω VCC = 3.0V VNC 2V/div THD (%) 0V 0.1 -60 VCOM CROSSTALK -80 0V 0.01 -100 1 10 FREQUENCY (MHz) 100 1000 85 MAX4854 toc12 1 ON-RESPONSE OFF-RESPONSE 85 1.4 SUPPLY VOLTAGE (V) 0 0.1 60 1.6 MAX4854 toc08 20 0 3.5 20 4 -15 LEAKAGE CURRENT vs. TEMPERATURE VCC = 5V -40 -40 TEMPERATURE (°C) 0.8 -20 tOFF 24 CHARGE INJECTION vs. COM VOLTAGE CHARGE INJECTION (pC) 1.4 LOGIC THRESHOLD (V) 3.5 30 MAX4854 toc07 1.6 2.5 26 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) 1.5 28 20 1.5 5.5 tON 30 22 0 0 MAX4854 toc06 MAX4854 toc05 40 32 MAX4854 toc09 0.2 50 34 LEAKAGE CURRENT (nA) SUPPLY CURRENT (nA) 0.8 60 TURN-ON/TURN-OFF TIME (ns) MAX4854 toc04 1.0 TURN-ON/TURN-OFF TIME vs. TEMPERATURE TURN-ON/TURN-OFF TIME (ns) SUPPLY CURRENT vs. SUPPLY VOLTAGE FREQUENCY RESPONSE (dB) MAX4854 7Ω Quad SPST Switches with Over-Rail Signal Handling 10 100 1k 10k 100k 200µs/div FREQUENCY (Hz) _______________________________________________________________________________________ 7Ω Quad SPST Switches with Over-Rail Signal Handling PIN NAME 1 NO1 FUNCTION 2, 11 N.C. No Connection. Not internally connected. 3 IN2 Digital Control Input for Analog Switch 2. A logic-low on IN2 disconnects COM2 from NO2 and a logic-high connects COM2 to NO2. 4 COM2 5 NO2 Normally Open Terminal for Analog Switch 2 6 GND Ground 7 NO3 Normally Open Terminal for Analog Switch 3 8 COM3 9 IN3 Digital Control Input for Analog Switch 3. A logic-low on IN3 disconnects COM3 from NO3 and a logic-high connects COM3 to NO3. 10 NO4 Normally Open Terminal for Analog Switch 4 12 COM4 13 IN4 Digital Control Input for Analog Switch 4. A logic-low on IN4 disconnects COM4 from NO4 and a logic-high connects COM4 to NO4. 14 VCC Supply Voltage. Bypass to GND with a 0.01µF capacitor as close to the pin as possible. 15 IN1 Digital Control Input for Analog Switch 1. A logic-low on IN1 disconnects COM1 from NO1 and a logic-high connects COM1 to NO1. 16 COM1 EP GND Normally Open Terminal for Analog Switch 1 Common Terminal for Analog Switch 2 Common Terminal for Analog Switch 3 Common Terminal for Analog Switch 4 Common Terminal for Analog Switch 1 Exposed Pad. Connect to ground. _______________________________________________________________________________________ 5 MAX4854 Pin Description MAX4854 7Ω Quad SPST Switches with Over-Rail Signal Handling Detailed Description The MAX4854 low on-resistance, low-voltage, analog switch is designed to operate from a +2V to +5.5V single supply and is fully specified for nominal +3.0V applications. The device features over-rail signal capability that allows signals up to +5.5V with supply voltages down to +2.0V to pass through without distortion. This quad SPST switch has low on-channel capacitance, which allows switching of the data signals for USB 2.0/1.1 applications (12Mbps). It is 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. Applications Information 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; therefore, NO_ and COM_ 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. 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 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). Typical Operating Circuit D+ DATA SOURCE 1 (USB) D- COM1 NO1 7Ω IN1 COM2 NO2 7Ω IN2 MAX4854 D+ DATA SOURCE 2 (USB) D- 7Ω D+ DCOM3 NO3 IN3 USB CONNECTOR COM4 NO4 7Ω 6 DATA 1 ENABLE IN4 DATA 2 ENABLE _______________________________________________________________________________________ 7Ω Quad SPST Switches with Over-Rail Signal Handling MAX4854 VCC LOGIC INPUT V CC VNO COM_ NO_ t R < 20ns t F < 20ns VCC 50% 0V VOUT RL CL t OFF SWITCH OUTPUT VOUT 0.9 x V0UT 0.9 x VOUT 0V IN_ t ON GND LOGIC INPUT CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL RL + RON VOUT = VNO ( ) Figure 1. Switching Time tri 90% 50% A TxD+ B INPUT A 10% tskew_i CL Rs INPUT A- 90% 50% 10% tfi tro A- TxDRs Rs = 39Ω CL = 50pF B- OUTPUT B 10% 90% 50% tskew_o CL OUTPUT B- 90% 50% 10% |tro - tri| DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. |tfo - tfi| tfo 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. Input/Output Skew Timing Diagram _______________________________________________________________________________________ 7 MAX4854 Test Circuits/Timing Diagrams 7Ω Quad SPST Switches with Over-Rail Signal Handling MAX4854 Test Circuits/Timing Diagrams (continued) V CC MAX4854 ∆VOUT VCC RGEN NO_ VOUT COM_ VOUT CL V GEN GND IN_ OFF IN VIL TO VIH ON OFF Q = (∆V OUT )(C L ) Figure 3. Charge Injection +5V 10nF V OFF-ISOLATION = 20log OUT VIN NETWORK ANALYZER VCC 0V OR VCC COM1 IN_ 50Ω VIN 50Ω ON-LOSS = 20log MAX4854 NO1* GND VOUT MEAS 50Ω MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND ON 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. REF V CROSSTALK = 20log OUT VIN 50Ω *FOR CROSSTALK, THIS PIN IS NO2. COM2 IS OPEN. Figure 4. On-Loss, Off-Isolation, and Crosstalk 8 VOUT VIN _______________________________________________________________________________________ 7Ω Quad SPST Switches with Over-Rail Signal Handling 10nF Chip Information TRANSISTOR COUNT: 735 PROCESS: CMOS V CC VCC COM_ MAX4854 IN CAPACITANCE METER VIL OR VIH NO_ f = 1MHz GND Figure 5. Channel Off-/On-Capacitance _______________________________________________________________________________________ 9 MAX4854 Test Circuits/ Timing Diagrams (continued) 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.) 12x16L QFN THIN.EPS MAX4854 7Ω Quad SPST Switches with Over-Rail Signal Handling D2 0.10 M C A B b D D2/2 D/2 E/2 E2/2 CL (NE - 1) X e E E2 L e CL k (ND - 1) X e CL CL 0.10 C 0.08 C A A2 A1 L L e e PACKAGE OUTLINE 12, 16L, THIN QFN, 3x3x0.8mm 21-0136 10 ______________________________________________________________________________________ E 1 2 7Ω Quad SPST Switches with Over-Rail Signal Handling 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX4854 Package Information (continued) (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.)