FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Features Description ■ Low On capacitance, 3.7pF (typical) The FSUSB31 is a low-power, single-port, high-speed USB 2.0 switch. This part is configured as a single pole, single-throw switch and is optimized for switching or isolating a high-speed (480Mbps) source or a high-speed and full-speed (12Mbps) source. The FSUSB31 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (CON) of 3.7pF. The wide bandwidth of this device (>720MHz) exceeds the bandwidth needed to pass the third harmonic, resulting in signals with minimum edge and phase distortion. Superior channel-to-channel crosstalk minimizes interference. ■ Low On resistance, 6.5Ω (typical) ■ Low power consumption (1µA maximum) ■ ■ ■ ■ – 10µA maximum ICCT over and expanded control voltage range (VIN = 2.6V, VCC = 4.3V) Wide -3dB bandwidth, > 720MHz 8K I/O to GND ESD protection Power OFF protection when VCC = 0V, D+ / D- pins can tolerate up to 4.3V Packaged in: – Pb-Free 8-lead MicroPak™ (1.6 x 1.6mm) – Pb-Free 8-lead US8 The FSUSB31 contains special circuitry on the D+ / Dpins that allows the device to withstand an over-voltage condition. This device is also designed to minimize current consumption even when the control voltage applied to the OE pin is lower than the supply voltage (VCC). This feature is especially valuable for ultra-portable applications such as cell phones, allowing for direct interface with the general purpose I/Os of the baseband processor. Other applications include port isolation and switching in portable cell phones, PDAs, digital cameras, printers, and notebook computers. Applications ■ Cell phone, PDA, Digital Camera, and Notebook ■ LCD Monitor, TV, and Set-Top Box Related Application Notes ■ AN-6022 Using the FSUSB30/31 to Comply with USB 2.0 Fault Condition Requirements Ordering Information Part Number FSUSB31K8X Package Pb-Free Package Description MAB08A Yes 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide FSUSB31L8X MAC08A Yes Pb-Free package per JEDEC J-STD-020B. 8-Lead MicroPak, 1.6mm Wide Application Diagram VCC FSUSB31 D+ USB Connector Base Band Processor or FS USB Controller D– OE HS USB Controller Figure 1. Typical Application Diagram MicroPak™ is a trademark of Fairchild Semiconductor Corporation. © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch January 2007 VCC NC HSD– D– Analog Symbol 7 6 5 8 HSD+ D+ HSD– GND 4 2 3 OE HSD+ D+ D– 1 OE Figure 2. Pin Assignments for MicroPak 1 8 VCC HSD– 2 7 OE D– 3 6 HSD+ GND 4 5 D+ NC Control Figure 4. Analog Symbol Figure 3. Pin Assignments for US8 Pin Descriptions Pin Name Description OE Bus Switch Enable D+, D−, HSD+, HSD− Data Ports NC No Connect Truth Table OE Function HIGH Disconnect LOW D+, D− = HSD © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 2 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Connection Diagrams g Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter Supply Voltage (1) VS DC Input Voltage VIN DC Switch Voltage(1) IIK DC Input Diode Current IOUT DC Output Current TSTG Storage Temperature ESD Human Body Model HSD D+, D− Minimum Maximum Unit -0.5V 4.6 V -0.5V 4.6 V -0.5V VCC+0.3 V -0.5 +4.6 V -50 -65 All Pins I/O to GND mA 50 mA +150 °C 7.5 kV 8 kV Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol VCC VIN TA Parameter Supply Voltage Minimum Maximum Unit 3.0 4.3 V (2) 0V VCC V Switch Input Voltage 0V VCC V Operating Temperature -40 +85 °C Control Input Voltage Notes: 1. The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. DC switch voltage may never exceed 4.6V. 2. Control input must be held HIGH or LOW and it must not float. © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 3 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Absolute Maximum Ratings All typical values are at 25°C unless otherwise specified. Symbol Parameter VCC (V) Conditions IIN = −18mA TA = −40°C to +85°C Min. Typ. VIK Clamp Diode Voltage VIH Input Voltage HIGH VIL Input Voltage LOW IIN Control Input Leakage VIN = 0V to VCC 4.3 -1.0 1.0 μA IOZ OFF State Leakage 0 ≤ HSD ≤ VCC 4.3 -2.0 2.0 μA IOFF Power OFF Leakage Current (D+, D–) VIN = 0.0V to 4.3V, VCC = 0V 0 -2.0 2.0 μA RON Switch On Resistance(3) VIN = 0.4V, ION = −8mA 3.0 6.5 10.0 Ω Delta RON(4) VIN = 0.4V, ION = −8mA VIN = 0.0V −1.0V, ION = −8mA 3.0 0.35 Ω 3.0 2.0 Ω ΔRON RON Flatness RON Flatness(3) 3.0 Unit Max. -1.2 3.0 to 3.6 1.3 4.3 1.7 V V 3.0 to 3.6 0.5 4.3 0.7 V ICC Quiescent Supply Current VIN = 0.0V or VCC, IOUT = 0 4.3 1.0 μA ICCT Increase in ICC Current per Control Voltage and VCC Levels VIN = 2.6V, VCC = 4.3V 4.3 10.0 μA Notes: 3. Measured by the voltage drop between Dn, HSD, and Dn pins at the indicated current through the switch. On resistance is determined by the lower of the voltage on the two ports. 4. Guaranteed by characterization. AC Electrical Characteristics All typical values are for VCC = 3.3V are at 25°C unless otherwise specified. Symbol Parameter VCC (V) Conditions TA = −40°C to +85°C Figure Number Figure 12 Typ. Max. 3.0 to 3.6 15.0 30.0 ns 3.0 to 3.6 12.0 25.0 ns RL = 50Ω, CL = 5pF 3.3 0.25 Break-Before-Make RL = 50Ω, CL = 5pF, VIN = 0.8V 3.0 to 3.6 OIRR Off Isolation (Non-Adjacent) RT = 50Ω, f = 240MHz 3.0 to 3.6 Xtalk Non-Adjacent Channel Crosstalk RT = 50Ω, f = 240MHz 3.0 to 3.6 tON Turn-On Time, OE to Output VIN = 0.8V, RL = 50Ω, CL = 5pF tOFF Turn-Off Time, OE to Output VIN = 0.8V, RL = 50Ω, CL = 5pF tPD Propagation Delay(4) tBBM BW -3dB Bandwidth © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 RT = 50Ω, CL = 0pF 3.0 to 3.6 RT = 50Ω, CL = 5pF Min. Unit Figure 12 ns Figure 10 Figure 11 ns Figure 13 -35.0 dB Figure 16 -55.0 dB Figure 17 MHz Figure 15 2.0 6.5 720 550 www.fairchildsemi.com 4 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch DC Electrical Characteristics Symbol Parameter TA = −40°C to +85°C VCC (V) Conditions Min. Typ. Unit Figure Number Max. tSK(O) Channel-to-Channel Skew(5) CL = 5pF 3.0 to 3.6 50.0 ps Figure 10 Figure 14 tSK(P) Skew of Opposite Transitions of the Same Output(5) CL = 5pF 3.0 to 3.6 20.0 ps Figure 10 Figure 14 Total Jitter(5) RL = 50Ω, CL = 5pF, tR = tF = 500ps at 480 Mbps (PRBS = 215 − 1) 3.0 to 3.6 200 ps tJ Note: 5. Guaranteed by design. Capacitance Symbol Parameter Conditions Min. Typ. 1.0 Max. Unit Figure Number pF Figure 19 CIN Control Pin Input Capacitance CON D1n, D2n, Dn On Capacitance VCC = 3.3, OE = 0V 3.7 pF Figure 18 COFF D1n, D2n Off Capacitance VCC and OE = 3.3 1.7 pF Figure 19 © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 VCC = 0V TA = −40°C to +85°C www.fairchildsemi.com 5 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch USB Hi-Speed Related AC Electrical Characteristics 0 0 -1 -10 Off Isolation (dB) Gain (dB) -2 VCC = 3.3V -20 CL = 0pF VCC = 3.3V -3 -4 -5 -6 -30 -40 -50 -60 -70 -80 -7 -90 -8 -100 1 10 100 1000 10000 1 10 Frequency (MHz) Figure 5. Gain vs. Frequency Crosstalk (dB) 100 1000 Frequency (MHz) 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 Figure 6. Off Isolation VCC = 3.3V 1 10 100 1000 Frequency (MHz) Figure 7. Crosstalk © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 6 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Typical Characteristics VON FSUSB31 FSUSB31 IDn(OFF) NC HSD Dn A VIN VIN ION OE OE GND GND GND VS = 0 to VCC VS = 0 or VCC RON = VON / ION Each switch port is tested separately. Figure 8. On Resistance Figure 9. Off Leakage FSUSB31 D+, D– VIN 800mV Input: HSD+, HSD– 400mV RL VOUT CL* RS GND tFALL = 500ps tRISE = 500ps HSD GND 90% 90% 50% 50% 10% 10% VOE VOH GND Output: D+, D– RL, RS, and CL are functions of the application environment (see AC Electrical tables for specific values). 50% tPLH *CL includes test fixture and stray capacitance. Figure 10. AC Test Circuit Load tPHL Figure 11. Switch Propagation Delay Waveforms (tPD) tFALL = 2.5ns tRISE = 2.5ns VCC 90% Input – OE VCC/2 GND 50% VOL 90% VCC/2 10% 10% VOH 90% 90% Output – VOUT VOL tON tOFF Figure 12. Turn On / Turn Off Waveform (tON / tOFF) © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 7 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Test Diagrams VCC VCC HSDn VO VOUT D+, D– RL VCC Control Input HSDn CL* 50% 0V tR = tF = 2.5ns (10–90%) S Control Input VOUT GND 0.9 x VOUT tD *CL includes test fixture and stray capacitance. Figure 13. Break-Before-Make (tBBM) tFALL = 500ps tRISE = 500ps 800mV 90% Input: D+, D– 50% 10% 400mV 10% tFALL = 500ps tRISE = 500ps 800mV 90% nput: HSDn+ HSDn– 50% VOH Output1: HSD1+ HSD1– 90% 50% 10% 400mV 90% 50% 50% 50% VOL 10% tPLH1 tPHL1 50% 50% VOH VOH 50% Output: D+, D– 50% Output1: D2+, D2– VOL VOL tPLH tPHL tPLH2 TSK(P) = | tPHL – tPLH | Pulse Skew, TSK(P) tPHL2 TSK(O) = | tPLH1 – tPLH2 | or | tPHL1 – tPHL2 | Output Skew, TSK(OUT) Figure 14. Switch Skew Tests Network Analyzer FSUSB31 RS VIN VS GND GND VOE GND VOUT GND RS and RT are functions of the application environment (see AC Electrical Tables for specific values). RT GND Figure 15. Bandwidth © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 8 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Test Diagrams (Continued) FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Test Diagrams (Continued) Network Analyzer FSUSB31 RS VIN VS GND RT VOE GND GND GND VOUT GND OFF-Isolation = 20 Log (VOUT / VIN) RT GND Figure 16. Channel Off Isolation NC Network Analyzer FSUSB31 RS VIN VS GND VOE GND RT GND GND RT GND RS and RT are functions of the application environment (50, 75 or 100Ω). VOUT GND Crosstalk = 20 Log (VOUT / VIN) Figure 17. Non-Adjacent Channel-to-Channel Crosstalk Capacitance Meter Dn FSUSB31 Dn FSUSB31 OE OE Capacitance Meter VOE = 0 or VCC F = 240MHz F = 240MHz HSDn Figure 18. Channel On Capacitance © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 VOE = 0 or VCC HSDn Figure 19. Channel Off Capacitance www.fairchildsemi.com 9 Power-On Protection In section 7.1.1 of the USB 2.0 specification, it notes that USB devices must be able to withstand a Vbus short to D+ or D- when the USB devices is either powered off or powered on. The FSUSB31 can be successfully configured to meet both these requirements. The USB 2.0 specification also notes that the USB device should be capable of withstanding a Vbus short during transmission of data. Fairchild recommends adding a 100Ω series resister between the switch VCC pin and supply rail to protect against this case. This modification works by limiting current flow back into the VCC rail during the over-voltage event so current remains within the safe operating range. In this application, the switch passes the full 5.25V input signal through to the selected output, while maintaining specified off isolation on the un-selected pins. Power-Off Protection For a Vbus short circuit, the switch is expected to withstand such a condition for at least 24 hours. The FSUSB31 has specially designed circuitry which prevents unintended signal bleed through as well as guaranteed system reliability during a power-down, overvoltage condition. The protection has been added to the common pins (D+, D-). VCC= 3.6 V 100 Ohms HSD+ HSD- D+ = 5.25V FSUSB31 D- = 5.25V Figure 20. A 100Ω resistor in series with the VCC supply allows the FSUSB31 to withstand a Vbus short when powered up For more information, see Applications Note AN-6022 Using the FSUSB30/FSUSB31 to Comply with USB 2.0 Fault Condition Requirements at www.fairchildsemi.com © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 10 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Application Guidance: Meeting USB 2.0 Vbus Short Requirements Tape Format for MircoPak Package Designator Tape Section Number Cavities Cavity Status Cover Tape Status Leader (Start End) 125 (typ) Empty Sealed L8X Carrier 5000 Filled Sealed Trailer (Hub End) 75 (typ) Empty Sealed Tape Dimension Dimensions are in millimeters unless otherwise specified. © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 11 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Tape and Reel Specification Dimensions are in inches (millimeters) unless otheriwise specified. Tape Size A B C D N W1 W2 W3 (8mm) 7.0 (177.8) 0.059 (1.50) 0.512 (13.00) 0.795 (20.20) 2.165 (55.00) 0.331 + 0.059/−0.000 (8.40 + 1.50/−0.00) 0.567 (14.40) W1 + 0.078/−0.039 (W1 + 2.00/−1.00) © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.5 www.fairchildsemi.com 12 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Reel Dimension for MircoPak FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Physical Dimensions Dimensions are in millimeters unless otherwise noted. Figure 21. Pb-Free, 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 13 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch Physical Dimensions (Continued) Dimensions are in millimeters unless otherwise noted. Figure 22. Pb-Free, 8-Lead MicroPak, 1.6mm Wide © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 www.fairchildsemi.com 14 FSUSB31 Low-Power 1-Port Hi-Speed USB 2.0 (480Mbps) Switch © 2006 Fairchild Semiconductor Corporation FSUSB31 Rev. 1.0.6 15 www.fairchildsemi.com