AOZ8858DI-03 - Alpha and Omega Semiconductor

1 Rev. April 1 of 8 aoz8858di -034-Channel Ultra-Low Capacitance TVS ArrayGeneral DescriptionThe AOZ8858DI-03 is a transient voltage suppressorarray designed to protect high speed data lines such asHDMI , USB , LVDS, and V-by-one fromdamaging ESD device incorporates a numbers of surge rated, lowcapacitance steering diodes and a TVS in a singlepackage. During transient conditions, the steering diodesdirect the transient to either the positive side of the powersupply line or to AOZ8858DI-03 provides a typical line-to-linecapacitance of pF and low insertion loss providinggreater signal integrity making it ideally suited for or USB applications, such as Digital TVs,DVD players, computing, set-top boxes and MDDI applications in mobile computing AOZ8858DI-03 comes in a RoHS compliant andHalogen Free mm x mm x mm DFN-10package and is rated for -40 C to +125 C junctiontemperature ESD protection for high - speed data lines: IEC 61000-4-2, level 4 (ESD) immunity : Air discharge: 30 kV Contact discharge.

2 30 kV IEC61000-4-5 (Lightning) 4 A (8/20 s) Human Body Model (HBM) 30 kV Protects four I/O lines Low capacitance between I/O to GND: pF Low clamping voltage Low operating voltage: VApplications HDMI , USB , LVDS, V-by-One Monitors and flat panel displays Set-top box Video graphics cards Notebook computersTypical ApplicationsAOZ8858DI-03 aoz8858di -03TX2+TX2-TX1+TX1-TX0+TX0-CLK+ CLK-HDMI +RX2-RX1+RX1-RX0+RX0-CLK+CLK-HDMI AOZ8858DI-03 Rev. April 2 of 8 Ordering InformationAOS Green Products use reduced levels of Halogens, and are also RoHS visit for additional ConfigurationAbsolute Maximum RatingsExceeding the Absolute Maximum ratings may damage the :1. IEC 61000-4-2 discharge with CDischarge = 150pF, RDischarge = 330 .2. Human Body Discharge per MIL-STD-883, Method 3015 CDischarge = 100 pF, RDischarge = k.

3 Maximum Operating RatingsPart NumberAmbient Temperature RangePackageEnvironmentalAOZ8858DI-03-40 C to +125 C mm x mm x mm DFN-10 Green ProductParameterRatingStorage Temperature (TS)-65 C to +150 C ESD Rating per IEC61000-4-2, contact(1) 30 kV ESD Rating per IEC61000-4-2, air(1) 30 kV ESD Rating per Human Body Model(2) 30 kV ParameterRatingJunction Temperature (TJ)-40 C to +125 C12345109876CH1CH2 VNCH3CH4 NCNCVNNCNCDFN-10(Top View) AOZ8858DI-03 Rev. April 3 of 8 Electrical CharacteristicsTA = 25 C unless otherwise specified. Any I/O pin to :3. These specifications are guaranteed by design and Measurements performed using a 100ns Transmission Line Pulse (TLP) Working VoltageI/O pin to Breakdown VoltageIT = 100 A, I/O pin-to-ground5 VIRR everse Leakage CurrentVT=Max.

4 VRWM, I/O pin-to-ground150nAVHOLDHold Voltage of Snapback(3) Current of Snapback(3)20mAVCLC lamping Voltage(3)(4)(100ns Transmission Line Pulse, I/O Pin-to-Ground)ITLP = 1 AITLP = 16 A310 VVRDNYD ynamic Resistance(3)ITLP = 1 A to 16 CJJunction CapacitanceVPIN 3,8 = 0 V, VI/O = 0 V, f = 1 MHz, I/O 3,8 = 0 V, VI/O = 0 V, f = 1 MHz, I/O pin-to-I/O Rev. April 4 of 8 AOZ8858DI-03 Typical Performance Characteristics Rev. April 5 of 8 AOZ8858DI-03 high speed PCB layout GuidelinesPrinted circuit board layout is the key to achieving thehighest level of surge immunity on power and data location of the protection devices on the PCB is thesimplest and most important design rule to follow. TheAOZ8858DI-03 devices should be located as close aspossible to the noise source.

5 The AOZ8858DI-03 deviceshould be placed on all data and power lines that enter orexit the PCB at the I/O connector. In most systems, surgepulses occur on data and power lines that enter the PCBthrough the I/O connector. Placing the aoz8858di -03devices as close as possible to the noise source ensuresthat a surge voltage will be clamped before the pulse canbe coupled into adjacent PCB traces. In addition, the PCB should use the shortest possibletraces. A short trace length equates to low impedance,which ensures that the surge energy will be dissipated bythe AOZ8858DI-03 device. Long signal traces will act asantennas to receive energy from fields that are producedby the ESD pulse. By keeping line lengths as short aspossible, the efficiency of the line to act as an antenna forESD related fields is reduced.

6 Minimize interconnectingline lengths by placing devices with the most interconnectas close together as possible. The protection circuitsshould shunt the surge voltage to either the reference orchassis ground. Shunting the surge voltage directly to theIC s signal ground can cause ground bounce. Theclamping performance of TVS diodes on a single ground Figure 1. Flow Through layout for HDMI can be improved by minimizing the impedance withrelatively short and wide ground traces. The PCB layoutand IC package parasitic inductances can causesignificant overshoot to the TVS s clamping voltage. Theinductance of the PCB can be reduced by using shorttrace lengths and multiple layers with separate groundand power planes.

7 One effective method to minimizeloop problems is to incorporate a ground plane in thePCB AOZ8858DI-03 ultra-low capacitance TVS isdesigned to protect four high speed data transmissionlines from transient over-voltages by clamping them to afixed reference. The low inductance and constructionminimizes voltage overshoot during high current the voltage on the protected line exceeds thereference voltage the internal steering diodes are forwardbiased, conducting the transient current away from thesensitive circuitry. The AOZ8858DI-03 is designed forease of PCB layout by allowing the traces to rununderneath the device. The pinout of the aoz8858di -03is designed to simply drop onto the IO lines of a HighDefinition Multimedia Interface (HDMI ) or design without having to divert the signal linesthat may add more parasitic inductance.

8 Pins 1, 2, 4 and5 are connected to the internal TVS devices and pins 6,7, 9 and 10 are no connects. The no connects was doneso the package can be securely soldered onto the PCBsurface. Figure 2. Flow Through layout for USB +SSRX GroundSSTX+SSTX SSRX+SSRX GroundSSTX+SSTX AOZ8858DI-03 Rev. April 6 of 8 Package Dimensions, , EP2_SNOTE1. CONTROLLING DIMENSION IS MILLIMETER. CONVERTED INCH DIMENSIONS ARE NOT NECESSARILY : mmRECOMMENDED LAND PATTERN Rev. April 7 of 8 AOZ8858DI-03 Tape and Reel Dimensions, , EP2_SAOZ8858DI-03 Rev. April 8 of 8 Part MarkingZWLTPart Number CodeAssembly Lot CodeAOZ8858DI-03(DFN x , 10L)Week and Year CodeAs used herein:1. Life support devices or systems are devices orsystems which, (a) are intended for surgical implant intothe body or (b) support or sustain life, and (c)

9 Whosefailure to perform when properly used in accordancewith instructions for use provided in the labeling, can bereasonably expected to result in a significant injury ofthe A critical component in any component of a lifesupport, device, or system whose failure to perform canbe reasonably expected to cause the failure of the lifesupport device or system, or to affect its safety SUPPORT POLICYALPHA AND Omega Semiconductor PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR DISCLAIMERA pplications or uses as critical components in life support devices or systems are not authorized. AOS does not assume any liability arising out of such applications or uses of its products. AOS reserves the right to make changes to product specifications without notice.

10 It is the responsibility of the customer to evaluate suitability of the product for their intended application. Customer shall comply with applicable legal requirements, including all applicable export control rules, regulations and ' products are provided subject to AOS' terms and conditions of sale which are set forth at.