USB 2.0 Hi-Speed Differential MAX4999 8:1 Multiplexer General Description Benefits and Features The MAX4999 differential Hi-Speed USB analog multi- Increased Flexibility and Performance plexer features low on-capacitance (C ) switching, ON Multiplexer Supports USB 2.0 Standard making it an ideal solution for the USB server/mass -3dB Bandwidth: 1200MHz (typ) storage market. The MAX4999 is designed for USB 2.0 Low On-Resistance and Power Management low-/full-/Hi-Speed applications with capability of sup- Features Minimize System Losses porting data rates up to 480Mbps. 6.5 (typ) On-Resistance (R ) ON The MAX4999 is a differential 8:1 multiplexer. The Single +3.0V to +3.6V Power-Supply Voltage MAX4999 features three digital inputs to control the sig- nal path. Typical applications include switching a USB Enable Input Puts All Channels in High-Impedance connector between eight USB hosts and a USB device. State (Standby Mode) Low Operating Current (1A) and Ultra-Low An enable input (EN) is provided to disable all channels Quiescent Current (30nA) in Standby Mode and place the device into a high-impedance state (standby mode), shutting off the charge pump for mini- Reduce Component Count and Design Complexity mum power consumption. Low Threshold Eliminates the Need for Translators The MAX4999 operates from a +3.0V to +3.6V power- in 1.8V Low-Voltage Systems supply voltage and is specified over the -40C to +85C Saves Board Space extended temperature range. The MAX4999 is available 32-Pin, 5mm x 5mm, TQFN Package in a 5mm x 5mm, 32-pin TQFN package. Ordering Information Applications Keyboard, Video, Mouse (KVM) PART TEMP RANGE PIN-PACKAGE Servers/RAID MAX4999ETJ+ -40C to +85C 32 TQFN-EP* Mass Storage +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Workstations Pin Configuration TOP VIEW 24 23 22 21 20 19 18 17 D5 1 25 16 D2 1 15 D2 0 D5 0 26 14 GND GND 27 13 D1 1 D6 1 28 MAX4999 29 12 D6 0 D1 0 GND 30 11 GND *EP 31 10 D0 1 D7 1 32 9 D0 0 D7 0 12 3 45 6 7 8 TQFN 5mm x 5mm *CONNECT EXPOSED PAD TO GND. 19-4127 Rev 2 3/15 GND GND V D4 0 CC EN D4 1 COM0 GND COM1 V CC C0 D3 1 D3 0 C1 GND C2USB 2.0 Hi-Speed Differential MAX4999 8:1 Multiplexer Absolute Maximum Ratings (All voltages referenced to GND.) Continuous Power Dissipation (T = +70C) A V ...........................................................................-0.3V to +4V 32-Lead TQFN (derate 34.5mW/C above +70C) ....2759mW CC All Other Pins (Note 1)..............................................-0.3V to +4V Operating Temperature Range ...........................-40C to +85C Continuous Current (COM to any switch) .......................60mA Storage Temperature Range .............................-65C to +150C Peak Current (COM to any switch) (pulsed at 1ms, Lead Temperature (soldering, 10s) .................................+300C 10% duty cycle)..........................................................120mA Soldering Temperature (reflow) .......................................+260C Note 1: Signals exceeding 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. Package Thermal Characteristics (Note 2) TQFN Junction-to-Ambient Thermal Resistance ( ) ............29C/W JA Junction-to-Case Thermal Resistance ( ) ...............2.0C/W JC Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = +3.0V to +3.6V, T = -40C to +85C, unless otherwise noted. Typical values are at V = +3.3V and T = +25C.) (Note 3) CC A CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS POWER SUPPLY Supply Voltage V 3.0 3.6 V CC Charge pump on 5 Quiescent Supply Current I A O Charge pump off 1 ANALOG SWITCH On-Resistance R I = 10mA 6.5 12 ON COM On-Resistance Match R V = 1V, T = +25C 0.8 ONSC COM A On-Resistance Match Between R V = 1V, T = +25C 1 ONBC COM A Channels Leakage Current COM , D 0, I V = +3.6V -1 +1 A L CC D 1 SWITCH AC PERFORMANCE (Note 4) Any switch to non-paired switch at 500MHz Crosstalk V -30 dB DCT1 (Figure 3) Any switch to non-paired switch at 240MHz Off-Isolation V -27 dB OFF (Figure 3) Bandwidth -3dB BW R = 45 unbalanced (Figure 3) 1200 MHz L f = 1MHz 6 On-Capacitance C pF ON Taken from S11 parameters at f = 240MHz 3.0 f = 1MHz, COM 5 Off-Capacitance C pF OFF Taken from S11 parameters at f = 240MHz 3.0 Propagation Delay t R = R = 50 (Figure 2) 300 ps PD L S V or V = +1.5V, R = 300, D 0 D 1 L Turn-On Time t 10 s ON C = 35pF, V = V , V = 0V (Figure 1) L IH CC IL www.maximintegrated.com Maxim Integrated 2