MAX14978 19-5573 Rev 1 4/11 SuperSpeed USB Passive Switch (Low/Full/Hi/SuperSpeed) General Description Features The MAX14978 high-performance, passive analog switch S Designed for SuperSpeed USB Applications: is ideal for switching Hi-Speed USB and SuperSpeed USB Low/Full/Hi-Speed (1.5/12/480Mbps) data between one source and two loads, or vice versa. The SuperSpeed (5.0Gbps) device can be used in desktop and notebook applications S Superior Return Loss and Insertion Loss for where SuperSpeed USB ports are in limited supply. The SuperSpeed Analog Switches device consists of two sets of analog switches with one set used for USB low-speed, full-speed, and Hi-Speed S Low Quiescent Current: 36A (typ) signals and the second set used for USB SuperSpeed. S All Link Training is Preserved (SuperSpeed) The device operates from a single +3.3V supply. S LVCMOS Control (1.4V P V P 3.6V) IH The device features low insertion loss for all speeds. It S Operation from a Single +3.3V Power Supply has Q6kV Human Body Model (HBM) ESD protection on all I/O pins. In addition, the low/full/Hi-Speed COM S Small, 3.5mm x 9.0mm, 42-Pin TQFN Package ports have ESD protection to Q15kV HBM and Q8kV IEC 61000-4-2 contact. The device is available in a small, 3.5mm x 9.0mm, Ordering Information 42-pin TQFN package and is specified over the extend- ed -40NC to +85NC temperature range. PART TEMP RANGE PIN-PACKAGE MAX14978ETO+ -40NC to +85NC 42 TQFN-EP* Applications +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Desktop PCs Laptop PCs Industrial USB Switching Typical Operating Circuit +3.3V USB SWITCH 0.1F CONTROLLER SEL1 SEL2 V V CC DD NCD+ D+ NCD- D- SUPERSPEED D+ COMD+ NOD+ Tx+ USB D- COMD- NOD- Tx- PORT1 Rx+ SUPERSPEED MAX14978 Tx+ COM0+ NC0+ Rx- USB NC0- CONTROLLER Tx- COM0- NC1+ Rx+ COM1+ NC1- D+ D- Rx- COM1- SUPERSPEED NO0+ Tx+ USB NO0- Tx- PORT2 NO1+ Rx+ EN NO1- Rx- GND Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.SuperSpeed USB Passive Switch (Low/Full/Hi/SuperSpeed) ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) Peak Current (COM0 , COM1 to NO0 , NO1 , NC0 , NC1 ) V .......................................................................-0.3V to +6.0V (pulsed at 1ms, 10% duty cycle) .................................Q70mA CC V .......................................................................-0.3V to +4.0V Continuous Current into Any Terminal ............................Q30mA DD SEL1, EN, COMD , NOD , Continuous Power Dissipation (T = +70NC) A NCD (Note 1) ...................................... -0.3V to (V + 0.3V) TQFN (derate 35.7mW/NC above +70NC) ..................2857mW CC SEL2, COM0 , COM1 , NC0 , Operating Temperature Range .......................... -40NC to +85NC NC1 , NO0 , NO1 (Note 1) ............... -0.3V to (V + 0.3V) Storage Temperature Range ............................ -65NC to +150NC DD COM0 - NO0 , COM0 - NC0 , Junction Temperature .....................................................+150NC COM0 - NO1 , COM0 - NC1 (Note 1) ........ 0 to +2.0V Lead Temperature (soldering, 10s) ................................+300NC Continuous Current (COM0 , Soldering Temperature (reflow) ......................................+260NC COM1 to NO0 , NO1 , NC0 , NC1 ) ........................Q70mA Note 1: Signals on SEL , NO , NC , or COM exceeding V , V , or V are clamped by internal diodes. Limit forward-diode CC DD GND 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 = +3.0V to +5.5V, V = +3.0V to +3.6V, T = -40NC to +85NC, unless otherwise noted. Typical values are at V = V = +3.3V, CC DD A CC DD T = +25NC.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS V 3.0 5.5 CC Power-Supply Range V V 3.0 3.6 DD I V = 0V or V , V = 0V V = 3.0V 0.6 1.5 CC SEL1 CC EN CC Supply Current FA I V = 0V or V V = 3.3V 60 DD SEL2 DD DD Hi-Speed USB switches, switch disabled Shutdown Supply Current, I I 0.1 FA CC SHDN (V = V ) EN CC Hi-Speed USB switches, 0V P V P V SEL1 IL Increase in Supply Current, I , CC or V P V P V or 0V P V P V or 1 FA IH SEL1 CC EN IL with V , V Voltage SEL1 EN V P V P V IH EN CC Hi-Speed USB switches, V = 0V EN 0 V CC V , COM (Note 3) Analog Signal Range V , V NO V - DD V NC SuperSpeed USB switches -0.3 1.2 Hi-Speed USB switches, COMD only, V + V + V CC CC CC Fault-Protection Trip Threshold V V FP T = +25NC 0.6 0.8 + 1 A Hi-Speed USB switches, 5 10 V = 0V to V COMD CC Hi-Speed USB switches, V = 3.0V, CC I On-Resistance R 5.5 ON V = 3.6V COMD SuperSpeed USB switches, V = 3.0V, DD 7 I = 15mA, V = V = 0V, 1.8V COM NO NC 2 MAX14978