ics16857

Systems, Inc.

ICSSSTV16857

DDR 14-Bit Registered BufferRecommended Application:DDR Memory ModulesProduct Features:•Differential clock signal•Meets SSTL_2 signal data•Supports SSTL_2 class I & II specifications•low-voltage operationVDD = 2.3V to 2.7V•48 pin TSSOP packagePin ConfigurationQ1Q2GNDVDDQQ3Q4Q5GNDVDDQQ6Q7VDDQGNDQ8Q9VDDQGNDQ10Q11Q12VDDQGNDQ13Q14123456789101112131415161718192021222324484746454443424140393837363534333231302928272625D1D2GNDVDDD3D4D5D6D7CLK#CLKVDDGNDVREFRESET#D8D9D10D11D12VDDGNDD13D14Truth Table1InputsRESET#LHHHNotes:1.H = High Signal LevelL = Low Signal Level↑ = Transition LOW-to-HIGH↓ = Transition HIGH -to LOWX = IrrelevantOutput level before the indicatedsteady state input conditions wereestablished.QOutputsDXorFloatingHLXQLHLQ0(2)CLKXorFloating↑↑LorHCLK#XorFloating↓↓LorH48-Pin TSSOP & TVSOP6.10 mm. Body, 0.50 mm. pitch = TSSOP4.40 mm. Body, 0.40 mm. pitch = TSSOP (TVSOP)2.Block Diagram3839344835RCLKD1CLKCLK#RESET#D1VREFICSSSTV168571Q1To 13 Other Channels16857 Rev D 07/09/01Third party brands and names are the property of their respective owners.ICS reserves the right to make changes in the device data identified inthis publication without further notice. ICS advises its customers toobtain the latest version of all device data to verify that anyinformation being relied upon by the customer is current and accurate. ICSSSTV16857

General Description

The 14-bit ICSSTV16857 is a universal bus driver designed for 2.3V to 2.7V VDD operation and SSTL_2 I/O Levelsexcept for the RESET# input which is LVCMOS.

Data flow from D to Q is controlled by the differential clock, CLK, CLK# and RESET#. Data is triggered on thepositive edge of CLK. CLK# must be used to maintain noise margins. RESET# must be supported with LVCMOSlevels as VREF may not be stable during power-up. RESET# is asynchronous and is intended for power-up only andwhen low assures that all of the registers reset to the Low State, Q outputs are low, and all input receivers, data andclock are switched off.

Pin Configuration

PINNUMBER24,23,20,19,18,15,14,11,10,7,6,5,2,13,8,13,22,27,36,464,9,12,16,2125,26,29,30,31,32,33,40,41,42,43,44,47,48383928,37,453435PINNAMEQ(14:1)GNDVDDQD(14:1)CLKCLK#VDDRESET#VREFTYPEOUTPUTPWRPWRINPUTINPUTINPUTPWRINPUTINPUTDataoutputGroundOutputsupplyvoltageDatainputPositiveclockinputNegativeclockinputCoresupplyvoltageReset(activelow)InputreferencevoltageDESCRIPTIONThird party brands and names are the property of their respective owners.

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ICSSSTV16857

Absolute Maximum RatingsStorage Temperature. . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°CSupply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to 3.6VInput Voltage1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to VDD +0.5Output Voltage1,2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 to VDDQ +0.5Input Clamp Current. . . . . . . . . . . . . . . . . . . . . . . ±50 mAOutput Clamp Current. . . . . . . . . . . . . . . . . . . . . ±50mAContinuous Output Current. . . . . . . . . . . . . . . . . ±50mAVDD, VDDQ or GND Current/Pin. . . . . . . . . . . . ±100mAPackage Thermal Impedance3. . . . . . . . . . . . . . . . . . . . Notes:1.The input and output negative voltageratings may be excluded if the inputand output clamp ratings are observed.2.This current will flow only whtn theoutput is in the high state levelV0 >VDDQ.3.The package thermal impedance iscalculated in accordance withJESD 51.55°C/WStresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings arestress specifications only and functional operation of the device at these or any other conditions above those listed in theoperational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extendedperiods may affect product reliability.Recommended Operating ConditionsPARAMETERVDDVDDQVREFVTTVIVIHVIHVILVILVIHVILVICRVIDVIXIOHIOLTA1DESCRIPTIONSupply VoltageI/O Supply VoltageReference Voltage VREF = 0.5X VDDQTermination VoltageInput VoltageDC Input High VoltageAC Input High VoltageData InputsDC Input Low VoltageAC Input Low VoltageInput High Voltage Level1.7RESET#Input Low Voltage LevelCommon mode Input Range0.97CLK, CLK#Differential Input Voltage0.36Cross Point Voltage of Differential Clock (VDDQ/2) -0.2PairHigh-Level Output CurrentLow-Level Output CurrentOperating Free-Air Temperature0MIN2.32.31.15VREF -0.040VREF +0.15VREF +0.31TYP2.52.51.25VREFMAX2.72.71.35VREF -0.04VDDUNITSVREF -0.15VREF -0.310.71.53(VDDQ/2) +0.2-202070VmA°CGuarenteed by design, not 100% tested in production.Third party brands and names are the property of their respective owners.

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ICSSSTV16857

Electrical Characteristics - DCTA = 0 - 70º C; VDD = 2.5 V +/-200mV, VDDQ=2.5V 200mV; (unless otherwise stated)SYMBOLVIKVOHVOLIIIDDOperating (Static)Dynamic operatingclock onlyIDDDDynamic Operatingper each data inputPARAMETERSCONDITIONSII = -18mAIOH = -100µAIOH= -16mAIOL = 100µAIOL = 16mAVI = VDD or GNDRESET# = GNDVI = VIH (AC#) or VIL (AC),RESET# = VDDRESET = VDD, VI = VIH(AC)or VIL (AC), CK and CK#switching 50% duty cycle.RESET# = VDD, VI = VIH(AC)or VIL (AC), CK and CK#switching 50% duty cycle.One data input switching athalf clock frequency, 50%duty cycleIOH = -20mAIOL = 20mAIO = 20mA, TA = 25° CVI = VREF ±310mVVICR = 1.25V, VI(PP) = 360mVVDD2.3V2.3V-2.72.3V2.3-2.7V2.3V2.7VMINVDD -0.21.95TYP2.5200.16MAX-1.2UNITSAll InputsStandby (Static)0.20.35±50.01TBDVµAµAmATBDIO = 02.7VTBDµA/clock MHzµA/ clockMHz/datarOHrOLrO(∆)CiOutput HighOutput Low[rOH - rOL] eachseparate bitData InputsCK and CK#2.3-2.7V2.3-2.7V2.5V2.5V771510202043.53.5ΩΩΩpF2.52.5Notes:1 - Guaranteed by design, not 100% tested in production.Third party brands and names are the property of their respective owners.

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ICSSSTV16857

Timing Requirements(over recommended operating free-air temperature range, unless otherwise noted)SYMBOLPARAMETERS VDD=2.5±0.2VMINTYPMAXfclockClock frequency133200tPDClock to output time1.12.42.8tRSTReset to output time3.15tSLOutput slew rate11.542, 4Setup time, fast slew rate Data before CKD , CK#E0.750.0183, 4Setup time, slow slew rate 0.9tSU2,4Hold time, fast slew rate Data after CKD , CK#E0.750.1453, 4Hold time, slow slew rate Th0.9Notes:1 - Guaranteed by design, not 100% tested in production.2 - For data signal input slew rate =1V/ns.4 - CLK, CLK# signals input slew rates are =1V/ns.3 - For data signal input slew rate =0.5V/ns and < 1V/ns.UNITSMHznsnsV/nsnsnsnsnsSwitching Characteristics(over recommended operating free-air temperature range, unless otherwise noted)SYMBOLfclocktPDtph1From(Input)CLK, CLK#RESET#To(Output)QQ VDD=2.5±0.2VMINTYP1331.12.43.1UNITSMAX2002.85MHznsnsThird party brands and names are the property of their respective owners.

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ICSSSTV16857

VTTRL=FromOutputUnderTestTestPointCL=30pF(seeNote1)LoadCircuitLVCMOSRESET#InputtinactIDD(seenote2)VDD/2VDD/2VDD0VtactTimingInputtPHLVTTVTTVICRVICRVI(pp)90%IDDH10%VoltageandCurrentWaveformsInputsActiveandInactiveTimestwIDDLtPHLVOHVOLOutputVoltageWaveforms-PropagationDelayTimesVIHVILVI(pp)LVCMOSRESET#InputVIHVDD/2tPHLOutputVTTVoltageWaveforms-PropagationDelayTimesVOHVOLVILInputVREFVREFVoltageWaveforms-PulseDurationTimingInputtSUInputVREFVICRthVREFVIHVILVoltageWaveforms-SetupandHoldTimesParameterMeasurementInformation(VDD=2.5V±0.2V)Notes: 1. CL incluces probe and jig capacitance.2. IDD tested with clock and data inputs held at VDD or GND, and Io = 0mA.3. All input pulses are supplied by generators having the following chareacteristics: PRR ≤10 MHz, Zo=50Ω, inputslew rate = 1 V/ns ±20% (unless otherwise specified).4. The outputs are measured one at a time with one transition per measurement.5. VTT = VREF = VDDQ/26. VIH = VREF + 310mV (ac voltage levels) for differential inputs. VIH = VDD for LVCMOS input.7. VIL = VREF -310mV (ac voltage levels) for differential inputs. VIL = GND for LVCMOS input.8. tPLH and tPHL are the same as tpdThird party brands and names are the property of their respective owners.

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ICSSSTV16857

NcLINDEXAREAE1E12DA2A1AIn MillimetersIn InchesSYMBOLCOMMON DIMENSIONSCOMMON DIMENSIONSMINMAXMINMAXA--1.20--.047A10.050.15.002.006A20.801.05.032.041b0.170.27.007.011c0.090.20.0035.008DSEE VARIATIONSSEE VARIATIONSE8.10 BASIC0.319 BASICE16.006.20.236.244e0.50 BASIC0.020 BASICL0.450.75.018.030NSEE VARIATIONSSEE VARIATIONSα0°8°0°8°aaa--0.10--.004VARIATIONS-C-ebSEATINGPLANEN4810-0039D mm.MIN12.40MAX12.60MIN.488D (inch)MAX.496aaaCReference Doc.: JEDEC Publication 95, MO-1536.10 mm. Body, 0.50 mm. pitch TSSOP(0.020 mil)(240 mil)Ordering InformationICSSSTV16857yG-TExample:ICS XXXX y G - PPP - TDesignation for tape and reel packagingPattern Number (2 or 3 digit number for parts with ROM code patterns)Package Type G=TSSOPRevision Designator (will not correlate with datasheet revision)Device Type (consists of 3 or 4 digit numbers)Prefix ICS, AV = Standard DeviceThird party brands and names are the property of their respective owners.

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ICS reserves the right to make changes in the device data identified inthis publication without further notice. ICS advises its customers toobtain the latest version of all device data to verify that any

information being relied upon by the customer is current and accurate.

ICSSSTV16857

NcLSYMBOLAA1A2bcDEE1eLNαaaaINDEXAREAE1E12DαA2A1AIn MillimetersIn InchesCOMMON DIMENSIONSCOMMON DIMENSIONSMINMAXMINMAX--1.20--.0470.050.15.002.0060.801.05.032.0410.130.23.005.0090.090.20.0035.008SEE VARIATIONSSEE VARIATIONS6.40 BASIC0.252 BASIC4.304.50.169.1770.40 BASIC0.016 BASIC0.450.75.018.030SEE VARIATIONSSEE VARIATIONS0°8°0°8°--0.08--.003VARIATIONS-C-N4810-0037D mm.MIN9.60MAX9.80MIN.378D (inch)MAX.386ebSEATINGPLANEaaaCReference Doc.: JEDEC Publication 95, MO-1534.40 mm. Body, 0.40 mm. pitch TSSOP(173 mil)(16 mil)Ordering InformationICSSSTV16857yL-TExample:ICS XXXX y L - PPP - TDesignation for tape and reel packagingPattern Number (2 or 3 digit number for parts with ROM code patterns)Package Type L=TSSOP (TVSOP)Revision Designator (will not correlate with datasheet revision)Device Type (consists of 3 or 4 digit numbers)Prefix ICS, AV = Standard DeviceThird party brands and names are the property of their respective owners.

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ICS reserves the right to make changes in the device data identified inthis publication without further notice. ICS advises its customers toobtain the latest version of all device data to verify that any

information being relied upon by the customer is current and accurate.