19-3797; Rev 2; 1/07 High-/Full-Speed USB 2.0 Switches The MAX4906/MAX4906F/MAX4907/MAX4907F analog switches combine the low on-capacitance (CON) and low on-resistance (R ON ) necessary for high-performance switching applications. These devices are designed for USB 2.0 high-speed applications at 480Mbps. These switches will also handle all the requirements for USB low- and full-speed signaling. The MAX4906/MAX4906F feature two single-pole/double-throw (SPDT) switches, and the MAX4907/ MAX4907F feature two single-pole/single-throw switches (SPST). The MAX4907/MAX4907F have a low 7 (max) on-resistance and 7pF (max) on-capacitance. These devices are fully specified to operate from a single +3.0V to +3.6V power supply and are protected against a +5.5V short to COM1 and COM2. This feature makes them fully compliant with the USB 2.0 specification of +5.5V fault protection. These devices feature a low threshold voltage and a +1.4V VIH, permitting them to be used with low-voltage logic. The MAX4906/ MAX4906F/MAX4907/MAX4907F operate at 300A (max) quiescent current and feature a shutdown input to reduce the quiescent current to less than 2A (max). The MAX4906/MAX4906F/MAX4907/MAX4907F are available in space-saving, 2mm x 2mm DFN packages and operate over a -40C to +85C temperature range. Applications Cell Phones PDAs Digital Still Cameras GPS Notebook Computers Relay Replacements USB Switching Ethernet Switching Video Switching Bus Switches T3/E3 Switches for Redundancy Protection Features Fully Specified for a Single +3.0V to +3.6V Power-Supply Voltage Low 4 (typ), 7 (max) On-Resistance (RON) MAX4907/MAX4907F Ultra-Low 4pF (typ), 7pF (max) On-Capacitance (CON) -3dB Bandwidth: 1GHz (typ) Low Bit-to-Bit Skew 100ps Shutdown Input Reduces Power Consumption to 2A (max) 3.3V, 1.8V, and 1.4V Logic Compatible COM_ Analog Inputs Fault Protected Against Shorts to USB Supply Rail Up to +5.5V Space-Saving Packages 8-Pin and 10-Pin, 2mm x 2mm DFN Packages Ordering Information PART PIN-PACKAGE PKG CODE MAX4906ELB 10 DFN L1022-1 MAX4906FELB 10 DFN L1022-1 MAX4907ELA 8 DFN L822-1 MAX4907FELA 8 DFN L822-1 Note: All devices operate over the -40C to +85C operating temperature range. Selector Guide appears at end of data sheet. Pin Configurations Typical Operating Characteristics EYE DIAGRAM VNO1OUT V+ =3.3V IBIAS = 9mA f = 240MHz USB 2.0 HIGH SPEED TRANSMIT TEMPLATE 100mV/div TOP VIEW IN 1 10 V+ SHDN/EN 2 9 NC1 GND 3 8 NC2 COM1 4 COM2 5 MAX4906 MAX4906F 7 NO1 6 NO2 DFN VNO2OUT 500ps/div Pin Configurations continued at end of data sheet. ________________________________________________________________ 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 MAX4906/MAX4606F/MAX4907/MAX4907F General Description MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND V+ .............................................................................-0.3V to +4V IN, SHDN, SHDN/EN (Note 1) ......................-0.3V to (V+ + 0.3V) COM_, NO_, NC_ ..................................................-0.5V to +5.5V Continuous Current (COM_ to NO_/NC_) ......................120mA Peak Current, (COM_ to NO_/NC_) (pulsed at 1ms 10% duty cycle).................................240mA Continuous Power Dissipation (TA = +70C) 8-Pin DFN (derate 5.0mW/C above +70C) .............400mW 10-Pin DFN (derate 5.3mW/C above +70C) ........423.7mW Operating Temperature Range ..........................-40C to +85C Junction Temperature .....................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Note 1: Signals on IN, SHDN or SHDN/EN exceeding V+ or 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 (V+ = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+= 3.3V, TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V+ V 4.0 V ANALOG SWITCH Analog Signal Range Fault-Protection Trip Threshold On-Resistance On-Resistance During Shutdown On-Resistance Match Between Channels VCOM_,VNO_, SHDN or SHDN/EN = 0 (Note 3) VNC_ VFP RON RONSH RON 0 3.6 ICOM_ = -40mA, 0V VCOM_ V+, SHDN or SHDN/EN = 0 TA = +25C ICOM_ = -40mA, 0V VCOM_ 1.5V, SHDN = V+ (MAX4907/MAX4907F) TA = +25C V+ = 3.0V, ICOM_= -40mA, VCOM_ = 1.5V (Note 4) 4 TA = TMIN to TMAX 7 8 4 10 TA = TMIN to TMAX 13 TA = +25C 0.7 1.2 TA = TMIN to TMAX 1.5 On-Resistance Flatness RFLAT (ON) V+ = 3.0V, ICOM_ = -40mA, VCOM_ = 1.5V, 3.0V (Note 5) Off-Leakage Current ICOM_(OFF) V+ = 3.6V, VCOM_ = 0.3V, 3.3V; VNO_ or VNC_ = 3.3V, 0.3V -1 +1 A On-Leakage Current ICOM_(ON) V+ = 3.6V, VCOM = 0.3V, 3.3V; VNO_ or VNC_ = 0.3V, 3.3V, or floating -1 +1 A 1.0 SWITCH AC PERFORMANCE On-Channel -3dB Bandwidth Off-Isolation 2 BW VISO RL = RS = 50, signal = 0dBm, Figure 1 1000 f = 10MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -60 f = 250MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -32 f = 500MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -26 _______________________________________________________________________________________ MHz dB High-/Full-Speed USB 2.0 Switches (V+ = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25C.) (Note 2) PARAMETER Crosstalk (Note 6) SYMBOL VCT CONDITIONS MIN TYP f = 10MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -59 f = 250MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -31 f = 500MHz; VNO_, VNC_ = 1VP-P; RL = RS = 50, Figure 1 -25 MAX UNITS dB SWITCH DYNAMICS NO_, NC_ Off-Capacitance Switch On-Capacitance Switch On-Capacitance Matching C(OFF) C(ON) CONM f = 1MHz, Figure 2 (Note 7) f = 1MHz, Figure 2 (Note 7) 2 4 MAX4906ELB, MAX4906FELB 6 9 MAX4907ELA, MAX4907FELA 4 7 MAX4906ELB, MAX4906FELB 0.4 MAX4907ELA, MAX4907FELA 0.3 pF pF pF f = 1MHz (Note 7) Turn-On Time tON VNO_, VNC_ = 1.5V; RL = 300, CL = 35pF, VIH = V+, VIL = 0V, SHDN or SHDN/EN = 0V, Figure 3 60 ns Turn-Off Time tOFF VNO_, VNC_ = 1.5V; RL = 300, CL = 35pF, VIH = V+, VIL = 0V, SHDN or SHDN/EN = 0V, Figure 3; TA = +25C 30 ns Propagation Delay tPLH_,tPHL RL = RS = 50, Figure 4 0.25 ns Fault-Protection Response Time tFP VCOM_ = 0 to 5V step, RL = RS = 50, Figure 5 3.0 s Fault-Protection Recovery Time tFPR VCOM_ = 5V to 3V step, RL = RS = 50, Figure 5 2 s Output Skew Between Switches tSK(o) Skew between switch 1 and switch 2, RL = RS = 50, Figure 4 (Note 7) 50 100 ps Output Skew Same Switch tSK(p) Skew between opposite transitions in same switch, RL = RS = 50, Figure 4 (Note 7) 50 100 ps _______________________________________________________________________________________ 3 MAX4906/MAX4606F/MAX4907/MAX4907F ELECTRICAL CHARACTERISTICS (continued) ELECTRICAL CHARACTERISTICS (continued) (V+ = +3V to +3.6V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at V+ = 3.3V, TA = +25C.) (Note 2) PARAMETER SYMBOL Total Harmonic Distortion Plus Noise CONDITIONS MIN TYP MAX UNITS THD+N VCOM_ = 2VP-P, RL = 600, f = 20Hz to 20kHz 0.03 % Q VGEN = 1.5V, RGEN = 0, CL = 100pF, Figure 6 5 pC Charge Injection SWITCH LOGIC Logic-Input-Voltage Low VIL Logic-Input-Voltage High VIH Input-Logic Hysteresis 0.4 V 1.1 V VHYST 100 Input Leakage Current IIN Operating Supply-Voltage Range V+ Quiescent Supply Current I+ V+ = 3.6V, VIN = 0 or V+, SHDN or SHDN/EN = 0 Quiescent Supply Current During Shutdown I+ V+ = 3.6V, VIN = 0 or V+, SHDN or SHDN/EN = V+ V+ = 3.6V, VIN = 0 or V+ mV -1 +1 A 3.0 3.6 V 300 A 2 A 120 Note 2: All units are 100% production tested at TA = +25C. Limits over the operating temperature range are guaranteed by design and not production tested. Note 3: The switch will turn off for voltages above (VFP); therefore, protecting downstream circuits in case of a fault condition (MAX4906F/MAX4907F). Note 4: RON(MAX) = | RON(CH1) - RON(CH2) | Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance, as measured over specified analog signal ranges. Note 6: Between any two switches. Note 7: Switch off-capacitance, switch on-capacitance, output skew between switches, and output skew same-switch limits are not production tested; design guaranteed by bench characterization. Typical Operating Characteristics (TA = +25C, unless otherwise noted.) ON-RESISTANCE vs. VCOM 4 TA = +85C 4 RON () V+ = 3.6V 3 TA = +25C 3 2 2 1 1 0 0 TA = +40C MAX4906 toc03 V+ = 3.3V 5 LEAKAGE CURRENT vs. TEMPERATURE 5000 MAX4906 toc02 5 MAX4906 toc01 V+ = 3.3V V+ = 3.0V 6 V+ = 3.6V 4500 4000 LEAKAGE CURRENT (pA) ON-RESISTANCE vs. VCOM 6 RON () MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches 3500 COM ON-LEAKAGE 3000 COM OFF-LEAKAGE 2500 2000 1500 1000 500 0 0.9 1.8 VCOM (V) 4 2.7 3.6 0 0 1.1 2.2 VCOM (V) 3.3 -40 -15 10 35 TEMPERATURE (C) _______________________________________________________________________________________ 60 85 High-/Full-Speed USB 2.0 Switches QUIESCENT SUPPLY CURRENT vs. TEMPERATURE CHARGE INJECTION (pC) 6 4 2 140 V+ = 3.6V 120 100 V+ = 3.0V 80 60 40 150 MAX4906 toc06 8 160 MAX4906 toc05 CL = 100pF V+ = 3.3V QUIESCENT SUPPLY CURRENT (A) MAX4906 toc04 10 QUIESCENT SUPPLY CURRENT vs. LOGIC LEVEL QUIESCENT SUPPLY CURRENT (A) CHARGE INJECTION vs. VCOM V+ = 3.3V 140 130 120 110 20 0 1.1 2.2 3.3 -15 10 35 60 0 85 1.1 2.2 TEMPERATURE (C) LOGIC LEVEL (V) LOGIC THRESHOLD vs. SUPPLY VOLTAGE TURN-ON/OFF TIME vs. SUPPLY VOLTAGE TURN-ON/OFF TIME vs. TEMPERATURE MAX4906 toc09 40 V+ = 3.3V 40 VIL 0.4 tON tON/tOFF (ns) tON/tOFF (ns) tON 0.6 3.3 50 MAX4906 toc08 50 MAX4906 toc07 VIH 0.8 30 20 30 20 tOFF tOFF 10 10 O O 3.0 3.2 3.4 0 3.0 3.6 3.2 3.4 3.6 SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) RISE/FALL-TIME PROPAGATION DELAY vs. SUPPLY VOLTAGE RISE/FALL-TIME PROPAGATION DELAY vs. TEMPERATURE TPLH 230 220 TPHL 210 200 V+ = 3V 240 230 TPHL 3.2 3.4 SUPPLY VOLTAGE (V) 3.6 60 85 10 0 -5 210 200 3..0 35 5 TPLH 220 10 SAME SWITCH OUTPUT SKEW vs. SUPPLY VOLTAGE OUTPUT SKEW (ps) 240 -15 TEMPERATURE (C) 250 OUTPUT RISE/FALL -TIME DELAY (ps) MAX4906 toc10 250 -40 XMAX4906 toc12 0.2 MAX4906 toc11 LOGIC THRESHOLD (V) -40 VCOM (V) 1 OUTPUT RISE/FALL -TIME DELAY (ps) 100 0 0 -10 -40 -15 10 35 TEMPERATURE (C) 60 85 3.0 3.2 3.4 3.6 SUPPLY VOLTAGE (V) _______________________________________________________________________________________ 5 MAX4906/MAX4606F/MAX4907/MAX4907F Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (TA = +25C, unless otherwise noted.) OUTPUT SKEW BETWEEN SWITCHES vs. SUPPLY VOLTAGE FREQUENCY RESPONSE MAX4906 toc13 0 MAX4906 toc13 10 -10 ON-LOSS -20 5 -30 ON-LOSS (dB) OUTPUT SKEW (ps) 0 CROSS-TALK -40 -50 -60 -70 -5 OFF-ISOLATION -80 -90 -100 -10 3.0 3.2 1 3.6 3.4 10 100 1000 FREQUENCY (MHz) SUPPLY VOLTAGE (V) TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY MAX4906 toc15 1 V+ = 3.3V RL = 600 THD+N (%) MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches 0.1 0.01 10 100 1k 10k 100k FREQUENCY (Hz) 6 _______________________________________________________________________________________ High-/Full-Speed USB 2.0 Switches PIN MAX4906/ MAX4907/ MAX4906F MAX4907F NAME FUNCTION 1 8 IN 2 -- SHDN/EN 3 2 GND 4 3 COM1 Analog Switch 1--Common Terminal 5 4 COM2 Analog Switch 2--Common Terminal 6 5 NO2 Analog Switch 2--Normally Open Terminal 7 6 NO1 Analog Switch 1--Normally Open Terminal 8 -- NC2 Analog Switch 2--Normally Closed Terminal 9 -- NC1 10 7 V+ -- 1 SHDN Digital Control Input. IN controls switch 1 and switch 2. Shutdown and Enable Input. Drive SHDN/EN high to consume minimum current and to put the device in high-impedance mode. Drive the SHDN/EN low for normal operation. Ground Analog Switch 1--Normally Closed Terminal Positive-Supply Voltage Input. Connect V+ to a 3.0V to 3.6V supply voltage. Bypass V+ to GND with a 0.1F capacitor. Shutdown Input. Drive SHDN high to put the device into shutdown mode. For normal operation, drive SHDN low. Test Circuits/Timing Diagrams +3.3V 10nF V OFF-ISOLATION = 20log OUT VIN NETWORK ANALYZER 0V OR V+ IN_ V+ COM1 50 VIN V ON-LOSS = 20log OUT VIN 50 MAX4906/MAX4906F NC1 MAX4907/MAX4907F NO1* 50 VOUT MEAS 50 REF V CROSSTALK = 20log OUT VIN 50 GND MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ 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. NC2 AND COM2 ARE OPEN. Figure 1. On-Loss, Off-Isolation, and Crosstalk _______________________________________________________________________________________ 7 MAX4906/MAX4606F/MAX4907/MAX4907F Pin Description MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches Test Circuits/Timing Diagrams (continued) 10nF V+ V+ COM_ MAX4906/MAX4906F MAX4907/MAX4907F IN CAPACITANCE METER VIL OR VIH NC_ or NO_ f = 1MHz GND Figure 2. Channel Off/On-Capacitance MAX4906/MAX4906F MAX4907/MAX4907F V+ V+ COM_ NO_ OR NC_ VN_ LOGIC INPUT 50% VIL VOUT RL t OFF CL IN VOUT GND LOGIC INPUT SWITCH OUTPUT CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VN_ RL + RON ( ) t r < 5ns t f < 5ns VIH 0.9 x V0UT t ON IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH. Figure 3. Switching Time 8 0.9 x VOUT 0V _______________________________________________________________________________________ High-/Full-Speed USB 2.0 Switches RS IN+ NC1 OR NO1 MAX4906/MAX4906F MAX4907/MAX4907F COM1 OUT+ RISE-TIME PROPAGATION DELAY = tPHLX OR tPHLY FALL-TIME PROPAGATION DELAY = tPHLX OR tPHLY tSK(O) = |tPHLX - tPHLY| OR |tPHLX - tPHLY| tSK(P) = |tPHLX - tPHLX| OR |tPHLY - tPHLY| RL RS IN- NC2 OR NO2 COM2 OUTRL IN IN VIL TO VIH tINFALL tINRISE V+ 90% VIN+ 90% 50% 50% 10% 0V 10% V+ VIN- 50% 50% 0V tOUTRISE tPLHX tOUTFALL tPHLX V+ 90% VOUT+ 90% 50% 50% 10% 0V 10% V+ 50% VOUT- 50% 0V tPHLY tPLHY Figure 4. Output Signal Skew, Rise/Fall Time, Propagation Delay _______________________________________________________________________________________ 9 MAX4906/MAX4606F/MAX4907/MAX4907F Test Circuits/Timing Diagrams (continued) MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches Test Circuits/Timing Diagrams (continued) 5V 2.5V 3V VCOM_ 0V tPF tFPR VPF 3V 2.5V VNO_ 1.5V VNC_ 0V Figure 5. MAX4906F/MAX4907F Fault-Protection Response/Recovery Time V+ MAX4906/MAX4906F MAX4907/MAX4907F VOUT V+ RGEN VOUT COM_ NC_ OR NO_ VOUT IN OFF CL V GEN GND ON OFF IN VIL TO VIH IN OFF ON OFF Q = (V OUT )(C L ) LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE. Figure 6. Charge Injection Detailed Description The MAX4906/MAX4906F/MAX4907/MAX4907F analog switches are targeted for USB 2.0 high-speed (480Mbps) switching applications. These devices still meet USB low- and full-speed requirements and are suitable for 10/100 Ethernet switching. The MAX4906/ MAX4906F feature two SPDT switches, while the MAX4907/MAX4907F feature two SPST switches. The MAX4907/MAX4907F switch configurations have a low 7 (max) on-resistance and 7pF (max) on-capacitance. 10 The MAX4906/MAX4906F/MAX4907/MAX4907F are fully specified to operate from a single +3.0V to +3.6V supply and are available with +5.5V fault protection (MAX4906F/ MAX4907F). When operating from a +3.0V to +3.6V supply, the low threshold of these devices permits them to be used with logic levels as low as 1.4V.The MAX4906/MAX4906F/MAX4907/MAX4907F are based on a charge-pump-assisted n-channel architecture and thus operate at 300A (max) quiescent current. These devices all feature a shutdown input to reduce the quiescent current to less than 2A (max). ______________________________________________________________________________________ High-/Full-Speed USB 2.0 Switches V+ V+ SHDN/EN SHDN MAX4907/MAX4907F MAX4906/MAX4906F IN IN NO1 COM1 NO1 COM1 COM2 NO2 COM2 NC1 NO2 NC2 GND GND MAX4907/MAX4907F MAX4906/MAX4906F SHDN/EN IN NO1 NO2 NC1 NC2 SHDN IN COM1- NO1 COM2- NO1 OFF 0 0 OFF ON 0 0 0 1 ON OFF 0 1 ON 1 x OFF OFF 1 0 OFF 1 1 ON Digital Control Input Shutdown Mode The MAX4906/MAX4906F/MAX4907/MAX4907F provide a single-digit control logic input, IN. IN controls the position of the switches as shown in the Functional Diagram/Truth Table. Driving IN rail-to-rail minimizes power consumption. With a +3.0V to +3.6V supply voltage range, these devices are +1.4V logic compatible. The MAX4906/MAX4906F feature a shutdown mode that reduces the quiescent current supply to less than 2A. Drive SHDN/EN high to place the devices in highimpedance mode. When SHDN/EN is driven low, the devices are normal in operation. The MAX4907/MAX4907F feature a SHDN input that reduces the quiescent current supply to less than 2A. Drive SHDN high to place the devices in low current mode. The devices can be used in low current mode, but with a reduced analog voltage range of 0 < VANALOG < 1.5V and reduced performance. When SHDN is driven low, the MAX4907/MAX4907F are in normal operation. Analog Signal Levels The on-resistance of the MAX4906/MAX4906F/ MAX4907/MAX4907F is very low and stable as the analog input signals are swept from ground to V+ (see the Typical Operating Characteristics). These switches are bidirectional, allowing NO_, NC_, and COM_ to be configured as either inputs or outputs. Applications Information Overvoltage Fault Protection USB Switching The MAX4906F and MAX4907F feature +5.5V fault protection to COM1 and COM2. Fault protection prevents these switches from being damaged due to shorts to the USB bus voltage rail. The MAX4906/MAX4906F/MAX4907/MAX4907F analog switches are fully compliant with the USB 2.0 specification. The low on-resistance and low on-capacitance of these switches make them ideal for high-performance switching applications. The MAX4906/MAX4906F are ______________________________________________________________________________________ 11 MAX4906/MAX4606F/MAX4907/MAX4907F Functional Diagram/Truth Table MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches ASIC I SHARED DATA PINS D+ USB TRANSCEIVER D- MAX4907/ MAX4907F VBUS MAX4906/ MAX4906F NC1 NO1 DATA COM1 D+ NO1 COM1 USB TRANSCEIVER SPI/GPIO DEVICE CLOCK NO2 COM2 NC2 D- COM2 ASIC II NO2 EN TRI-STATE ENABLE D+ USB TRANSCEIVER Figure 9. MAX4907/MAX4907F USB/SPI/GPIO Switch DGND USB CONNECTOR Figure 7. MAX4906/MAX4906F USB Data Routing MAX4906/ MAX4906F Power-Supply Sequencing NC1 USB0+ COM1 NO1 USB TRANSCEIVER NC2 USB1+ USB0- COM2 NO2 USB1- Figure 8. MAX4906/MAX4906F Switching Between Multiple USB Hosts ideal for routing USB data lines (see Figure 7) and for applications that require switching between multiple USB hosts (see Figure 8). The MAX4907/MAX4907F can be used in applications that require different data types to share the same pins (see Figure 9); however, the shared device must be capable of going into the tristate mode. The MAX4906F/MAX4907F also feature +5.5V fault protection to guard systems against shorts to the USB bus voltage. The fault-protected versions are recommended for all USB applications. 12 Ethernet Switching The wide bandwidth of the MAX4906/MAX4906F/ MAX4907/MAX4907F meets the needs of 10/100 Ethernet switching. These devices switch the signals from two interface transformers and connect the signals to a single 10/100 Base-T Ethernet PHY, simplifying docking station design and reducing manufacturing costs. 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 V+ before applying analog signals, especially if the analog signal is not current limited. Layout High-speed switches require proper layout and design procedures for optimum performance. Keep designcontrolled-impedance PC board traces as short as possible. Ensure that bypass capacitors are as close to the device as possible. Use large ground planes where possible. ______________________________________________________________________________________ High-/Full-Speed USB 2.0 Switches Selector Guide PART CONFIGURATION TOP VIEW SHDN 1 GND 2 COM1 3 COM2 4 8 MAX4907 MAX4907F IN 7 V+ 6 NO1 5 NO2 FAULT PROTECTION TOP MARK MAX4906ELB Dual SPDT NO AAB MAX4906FELB Dual SPDT YES AAA MAX4907ELA Dual SPST NO AAE MAX4907FELA Dual SPST YES AAD DFN Chip Information PROCESS: BiCMOS Revision History Pages changed at Rev 2: 1, 2, 3, 7, 11, 14 ______________________________________________________________________________________ 13 MAX4906/MAX4606F/MAX4907/MAX4907F Pin Configurations (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.) A D XXXX XXXX XXXX b e 6, 8, 10L UDFN.EPS MAX4906/MAX4606F/MAX4907/MAX4907F High-/Full-Speed USB 2.0 Switches N SOLDER MASK COVERAGE E PIN 1 0.10x45 L L1 1 SAMPLE MARKING PIN 1 INDEX AREA A A (N/2 -1) x e) 7 CL CL b L A A2 L e EVEN TERMINAL A1 e ODD TERMINAL PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm 21-0164 -DRAWING NOT TO SCALE- A 1 2 COMMON DIMENSIONS SYMBOL MIN. NOM. A 0.70 0.75 A1 0.15 0.20 0.25 A2 0.020 0.025 0.035 D 1.95 2.00 E 1.95 2.00 L 0.30 0.40 L1 MAX. 0.80 - 2.05 2.05 0.50 0.10 REF. PACKAGE VARIATIONS PKG. CODE N e b (N/2 -1) x e L622-1 6 0.65 BSC 0.300.05 1.30 REF. L822-1 8 0.50 BSC 0.250.05 1.50 REF. L1022-1 10 0.40 BSC 0.200.03 1.60 REF. PACKAGE OUTLINE, 6, 8, 10L uDFN, 2x2x0.80 mm -DRAWING NOT TO SCALE- 21-0164 A 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. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products. Inc.