2.5V LVDS 1:6 Clock Buffer TerabufferTM II IDT5T9306 DATA SHEET DESCRIPTION: FEATURES: * * * * * * * * * * * * The IDT5T9306 2.5V differential clock buffer is a user-selectable differential input to six LVDS outputs. The fanout from a differential input to six LVDS outputs reduces loading on the preceding driver and provides an efficient clock distribution network. The IDT5T9306 can act as a translator from a differential HSTL, eHSTL, LVEPECL (2.5V), LVPECL (3.3V), CML, or LVDS input to LVDS outputs. A single-ended 3.3V / 2.5V LVTTL input can also be used to translate to LVDS outputs. The redundant input capability allows for an asynchronous change-over from a primary clock source to a secondary clock source. Selectable reference inputs are controlled by SEL. The IDT5T9306 outputs can be asynchronously enabled/disabled. When disabled, the outputs will drive to the value selected by the GL pin. Multiple power and grounds reduce noise. Guaranteed Low Skew < 40ps (max) Very low duty cycle distortion < 125ps (max) High speed propagation delay < 1.75ns (max) Additive phase jitter, RMS 0.159ps (typical) @ 125MHz Up to 1GHz operation Selectable inputs Hot insertable and over-voltage tolerant inputs 3.3V / 2.5V LVTTL, HSTL, eHSTL, LVEPECL (2.5V), LVPECL (3.3V), CML, or LVDS input interface Selectable differential inputs to six LVDS outputs Power-down mode 2.5V VDD Available in VFQFPN package APPLICATIONS: * Clock distribution FUNCTIONAL BLOCK DIAGRAM GL G PD A1 A1 A2 A2 Q1 OUTPUT CONTROL Q2 OUTPUT CONTROL Q3 OUTPUT CONTROL Q4 OUTPUT CONTROL Q5 OUTPUT CONTROL Q6 1 0 SEL IDT5T9306 REVISION C MAY 30, 2012 OUTPUT CONTROL 1 Q1 Q2 Q3 Q4 Q5 Q6 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II NC Q5 Q5 Q6 Q6 VDD SEL PIN CONFIGURATION 28 27 26 25 24 23 22 G 1 21 PD VDD 2 20 VDD Q1 3 19 Q4 Q1 4 18 Q4 VDD 5 17 VDD A1 6 16 A2 A1 7 15 A2 Q2 VDD VDD Q3 10 11 12 13 14 Q3 9 Q2 8 GL GND VFQFPN TOP VIEW IDT5T9306 REVISION C MAY 30, 2012 2 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II CAPACITANCE(1) ABSOLUTE MAXIMUM RATINGS(1) Symbol Max Unit VDD Power Supply Voltage Description -0.5 to +3.6 V VI Input Voltage -0.5 to +3.6 V VO Output Voltage(2) -0.5 to VDD +0.5 V TSTG Storage Temperature -65 to +150 C TJ Junction Temperature 150 C Symbol CIN (TA = +25C, F = 1.0MHz) Parameter Min Typ. Max. Unit Input Capacitance -- -- 3 pF NOTE: 1. This parameter is measured at characterization but not tested NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. Not to exceed 3.6V. RECOMMENDED OPERATING RANGE Symbol TA VDD Description Ambient Operating Temperature Internal Power Supply Voltage Min. -40 2.3 Typ. +25 2.5 Max. +85 2.7 Unit C V PIN DESCRIPTION Symbol A[1:2] A[1:2] I/O I I Type Adjustable(1,4) Adjustable(1,4) G I LVTTL GL I LVTTL Qn Qn SEL PD O O I I LVDS LVDS LVTTL LVTTL VDD GND NC PWR PWR Description Clock input. A[1:2] is the "true" side of the differential clock input. Complementary clock inputs. A[1:2] is the complementary side of A[1:2]. For LVTTL single-ended operation, A[1:2] should be set to the desired toggle voltage for A[1:2]: 3.3V LVTTL VREF = 1650mV 2.5V LVTTL VREF = 1250mV Gate control for differential outputs Q1 and Q1 through Q6 and Q6. When G is LOW, the differential outputs are active. When G is HIGH, the differential outputs are asynchronously driven to the level designated by GL(2). Specifies output disable level. If HIGH, "true" outputs disable HIGH and "complementary" outputs disable LOW. If LOW, "true" outputs disable LOW and "complementary" outputs disable HIGH. Clock outputs Complementary clock outputs Reference clock select. When LOW, selects A2 and A2. When HIGH, selects A1 and A1. Power-down control. Shuts off entire chip. If LOW, the device goes into low power mode. Inputs and outputs are disabled. Both "true" and "complementary" outputs will pull to VDD. Set HIGH for normal operation.(3) Power supply for the device core and inputs Power supply return for all power No connect; recommended to connect to GND NOTES: 1. Inputs are capable of translating the following interface standards: Single-ended 3.3V and 2.5V LVTTL levels Differential HSTL and eHSTL levels Differential LVEPECL (2.5V) and LVPECL (3.3V) levels Differential LVDS levels Differential CML levels 2. Because the gate controls are asynchronous, runt pulses are possible. It is the user's responsibility to either time the gate control signals to minimize the possibility of runt pulses or be able to tolerate them in down stream circuitry. 3. It is recommended that the outputs be disabled before entering power-down mode. It is also recommended that the outputs remain disabled until the device completes power-up after asserting PD. 4. The user must take precautions with any differential input interface standard being used in order to prevent instability when there is no input signal. IDT5T9306 REVISION C MAY 30, 2012 3 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE RANG FOR LVTTL(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage VIN DC Input Voltage VIH DC Input HIGH VIL DC Input LOW VTHI DC Input Threshold Crossing Voltage VREF Single-Ended Reference Voltage(3) Test Conditions VDD = 2.7V VDD = 2.7V VDD = 2.3V, IIN = -18mA 3.3V LVTTL 2.5V LVTTL Min. Typ.(2) Max Unit -- -- -- - 0.3 1.7 -- -- -- -- -- -- - 0.7 -- -- -- VDD /2 1.65 1.25 5 5 - 1.2 +3.6 -- 0.7 -- -- -- A V V V V V V NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. Typical values are at VDD = 2.5V, +25C ambient. 3. For A[1:2] single-ended operation, A[1:2] is tied to a DC reference voltage. DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE FOR DIFFERENTIAL INPUTS(1) Symbol Parameter Input Characteristics IIH Input HIGH Current IIL Input LOW Current VIK Clamp Diode Voltage VIN DC Input Voltage VDIF DC Differential Voltage(3) VCM DC Common Mode Input Voltage(4) Test Conditions VDD = 2.7V VDD = 2.7V VDD = 2.3V, IIN = -18mA Min. Typ.(2) Max Unit -- -- -- - 0.3 0.1 0.05 -- -- - 0.7 -- -- -- 5 5 - 1.2 +3.6 -- VDD A V V V V NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. Typical values are at VDD = 2.5V, +25C ambient. 3. VDIF specifies the minimum input differential voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. The DC differential voltage must be maintained to guarantee retaining the existing HIGH or LOW input. The AC differential voltage must be achieved to guarantee switching to a new state. 4. VCM specifies the maximum allowable range of (VTR + VCP) /2. DC ELECTRICAL CHARACTERISTICS OVER RECOMMENDED OPERATING RANGE FOR LVDS(1) Symbol Parameter Output Characteristics VOT(+) Differential Output Voltage for the True Binary State VOT(-) Differential Output Voltage for the False Binary State VOT Change in VOT Between Complementary Output States VOS Output Common Mode Voltage (Offset Voltage) VOS Change in VOS Between Complementary Output States IOS Outputs Short Circuit Current Differential Outputs Short Circuit Current IOSD Test Conditions Min. Typ.(2) Max Unit VOUT + and VOUT - = 0V VOUT + = VOUT - 247 247 -- 1.125 -- -- -- -- -- -- 1.2 -- 12 6 454 454 50 1.375 50 24 12 mV mV mV V mV mA mA NOTES: 1. See RECOMMENDED OPERATING RANGE table. 2. Typical values are at VDD = 2.5V, TA = +25C ambient. IDT5T9306 REVISION C MAY 30, 2012 4 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II DIFFERENTIAL INPUT AC TEST CONDITIONS FOR HSTL Symbol Parameter VDIF Input Signal Swing(1) VX Differential Input Signal Crossing Point DH Duty Cycle VTHI Input Timing Measurement Reference Level tR, tF Input Signal Edge Rate(4) (2) (3) Value Units 1 V 750 mV 50 % Crossing Point V 2 V/ns NOTES: 1. The 1V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 750mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. DIFFERENTIAL INPUT AC TEST CONDITIONS FOR eHSTL Symbol Parameter VDIF Input Signal Swing(1) VX Differential Input Signal Crossing Point DH Duty Cycle VTHI Input Timing Measurement Reference Level tR, tF Input Signal Edge Rate(4) (2) (3) Value Units 1 V 900 mV 50 % Crossing Point V 2 V/ns NOTES: 1. The 1V peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 900mV crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. DIFFERENTIAL INPUT AC TEST CONDITIONS FOR LVEPECL (2.5V) AND LVPECL (3.3V) Symbol Parameter Value VDIF Input Signal Swing VX Differential Input Signal Crossing Point(2) DH Duty Cycle VTHI Input Timing Measurement Reference Level tR, tF Input Signal Edge Rate(4) Units 732 mV LVEPECL 1082 mV LVPECL 1880 (1) 50 (3) % Crossing Point V 2 V/ns NOTES: 1. The 732mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. 1082mV LVEPECL (2.5V) and 1880mV LVPECL (3.3V) crossing point levels are specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. IDT5T9306 REVISION C MAY 30, 2012 5 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II DIFFERENTIAL INPUT AC TEST CONDITIONS FOR LVDS Symbol Parameter VDIF Input Signal Swing(1) VX Differential Input Signal Crossing Point DH Duty Cycle VTHI Input Timing Measurement Reference Level(3) tR, tF Input Signal Edge Rate(4) Value Units 400 mV (2) 1.2 V 50 % Crossing Point V 2 V/ns NOTES: 1. The 400mV peak-to-peak input pulse level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VDIF (AC) specification under actual use conditions. 2. A 1.2V crossing point level is specified to allow consistent, repeatable results in an automatic test equipment (ATE) environment. This device meets the VX specification under actual use conditions. 3. In all cases, input waveform timing is marked at the differential cross-point of the input signals. 4. The input signal edge rate of 2V/ns or greater is to be maintained in the 20% to 80% range of the input waveform. AC DIFFERENTIAL INPUT SPECIFICATIONS(1) Symbol Parameter Min. Typ. Max Unit VDIF AC Differential Voltage(2) 0.1 -- 3.6 V VIX VCM Differential Input Crosspoint Voltage Common Mode Input Voltage Range(3) 0.05 0.05 -- -- VDD VDD V V VIN Input Voltage - 0.3 +3.6 V NOTES: 1. The output will not change state until the inputs have crossed and the minimum differential voltage range defined by VDIF has been met or exceeded. 2. VDIF specifies the minimum input voltage (VTR - VCP) required for switching where VTR is the "true" input level and VCP is the "complement" input level. The AC differential voltage must be achieved to guarantee switching to a new state. 3. VCM specifies the maximum allowable range of (VTR + VCP) /2. POWER SUPPLY CHARACTERISTICS FOR LVDS OUTPUTS(1) Symbol IDDQ ITOT IPD Parameter Quiescent VDD Power Supply Current Total Power VDD Supply Current Total Power Down Supply Current Test Conditions VDD = Max., All Input Clocks = LOW(2) Outputs enabled VDD = 2.7V., FREFERENCE CLOCK = 1GHz PD = LOW Typ. -- Max 240 Unit mA -- -- 250 5 mA mA NOTES: 1. These power consumption characteristics are for all the valid input interfaces and cover the worst case conditions. 2. The true input is held LOW and the complementary input is held HIGH. IDT5T9306 REVISION C MAY 30, 2012 6 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II AC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE(1,5) Symbol Skew Parameters tSK(O) tSK(P) Parameter Min. Typ. Max Unit Same Device Output Pin-to-Pin Skew(2) Pulse Skew(3) -- -- -- -- 40 125 ps ps tSK(PP) Propagation Delay tPLH tPHL Part-to-Part Skew(4) -- -- 300 ps Propagation Delay A, A Crosspoint to Qn, Qn Crosspoint -- 1.25 1.75 ns -- -- 1 GHz Output Gate Enable Crossing VTHI to Qn/Qn Crosspoint -- -- 3.5 ns Output Gate Disable Crossing VTHI to Qn/Qn Crosspoint Driven to GL Designated Level -- -- 3.5 ns -- -- -- -- 100 100 S S fO Frequency Range(6) Output Gate Enable/Disable Delay tPGE tPGD Power Down Timing tPWRDN PD Crossing VTHI to Qn = VDD, Qn = VDD Output Gate Disable Crossing VTHI to Qn/Qn Driven to GL Designated Level tPWRUP RMS Additive Phase Jitter RMS Additive Phase Jitter @ 25MHz (12kHz - 10MHz Integration Range) tJIT 0.541 ps RMS Additive Phase Jitter @ 125MHz (12kHz - 20MHz Integration Range) 0.159 ps RMS Additive Phase Jitter @ 156.25MHz (12kHz - 20MHz Integration Range) 0.185 ps Output Rise/Fall Time tR/tF Output Rise/Fall Time(6), (20% - 80%) 125 600 ps NOTES: 1. AC propagation measurements should not be taken within the first 100 cycles of startup. 2. Skew measured between crosspoints of all differential output pairs under identical input and output interfaces, transitions and load conditions on any one device. 3. Skew measured is the difference between propagation delay times tPHL and tPLH of any differential output pair under identical input and output interfaces, transitions and load conditions on any one device. 4. Skew measured is the magnitude of the difference in propagation times between any single differential output pair of two devices, given identical transitions and load conditions at identical VDD levels and temperature. 5. All parameters are tested with a 50% input duty cycle. 6. Guaranteed by design but not production tested. IDT5T9306 REVISION C MAY 30, 2012 7 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II DIFFERENTIAL AC TIMING WAVEFORMS 1/fo + VDIF VDIF = 0 - VDIF A[1:2] - A[1:2] tPHL tPLH + VDIF VDIF = 0 - VDIF Qn - Qn tSK(O) tSK(O) + VDIF VDIF = 0 - VDIF Qm - Qm Output Propagation and Skew Waveforms NOTES: 1. Pulse skew is calculated using the following expression: tSK(P) = | tPHL - tPLH | Note that the tPHL and tPLH shown above are not valid measurements for this calculation because they are not taken from the same pulse. 2. AC propagation measurements should not be taken within the first 100 cycles of startup. IDT5T9306 REVISION C MAY 30, 2012 8 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II + VDIF VDIF = 0 - VDIF A[1:2] - A[1:2] VIH VTHI VIL GL tPLH VIH VTHI VIL G tPGD tPGE + VDIF VDIF = 0 - VDIF Qn - Qn Differential Gate Disable/Enable Showing Runt Pulse Generation NOTE: 1. As shown, it is possible to generate runt pulses on gate disable and enable of the outputs. It is the user's responsibility to time the G signal to avoid this problem. A1 - A1 +VDIF VDIF=0 -VDIF A2 - A2 +VDIF VDIF=0 -VDIF G VIH VTHI VIL PD VIH VTHI VIL +VDIF VDIF=0 -VDIF Qn - Qn Power Down Timing NOTES: 1. It is recommended that outputs be disabled before entering power-down mode. It is also recommended that the outputs remain disabled until the device completes power-up after asserting PD. 2. The POWER DOWN TIMING diagram assumes that GL is HIGH. 3. It should be noted that during power-down mode, the outputs are both pulled to VDD. In the POWER DOWN TIMING diagram this is shown when Qn-Qn goes to VDIF = 0. IDT5T9306 REVISION C MAY 30, 2012 9 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II TEST CIRCUITS AND CONDITIONS VIN ~50 Transmission Line VDD/2 A D.U.T. Pulse Generator VIN A ~50 Transmission Line -VDD/2 Scope 50 50 Test Circuit for Differential Input DIFFERENTIAL INPUT TEST CONDITIONS IDT5T9306 REVISION C MAY 30, 2012 Symbol VDD = 2.5V 0.2V Unit VTHI Crossing of A and A V 10 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II VDD A Pulse Generator A Qn RL D.U.T. VOS VOD RL Qn Test Circuit for DC Outputs and Power Down Tests VDD/2 CL Pulse Generator A A SCOPE Z = 50 Qn 50 D.U.T. 50 Qn Z = 50 CL -VDD/2 Test Circuit for Propagation, Skew, and Gate Enable/Disable Timing LVDS OUTPUT TEST CONDITION Symbol VDD = 2.5V 0.2V Unit CL 0(1) 8(1,2) pF RL 50 NOTES: 1. Specifications only apply to "Normal Operations" test condition. The TIA/EIA specification load is for reference only. 2. The scope inputs are assumed to have a 2pF load to ground. TIA/EIA - 644 specifies 5pF between the output pair. With CL = 8pF, this gives the test circuit appropriate 5pF equivalent load. IDT5T9306 REVISION C MAY 30, 2012 11 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II VFQFPN EPAD THERMAL RELEASE PATH In order to maximize both the removal of heat from the package and the through these vias. The vias act as "heat pipes". The number of vias (i.e. "heat pipes") are application specific and dependent upon the package power dissipation as well as electrical conductivity requirements. Thus, thermal and electrical analysis and/or testing are recommended to determine the minimum number needed. Maximum thermal and electrical performance is achieved when an array of vias is incorporated in the land pattern. It is recommended to use as many vias connected to ground as possible. It is also recommended that the via diameter should be 12 to 13mils (0.30 to 0.33mm) with 1oz copper via barrel plating. This is desirable to avoid any solder wicking inside the via during the soldering process which may result in voids in solder between the exposed pad/ slug and the thermal land. Precautions should be taken to eliminate any solder voids between the exposed heat slug and the land pattern. Note: These recommendations are to be used as a guideline only. For further information, refer to the Application Note on the Surface Mount Assembly of Amkor's Thermally/Electrically Enhance Leadframe Base Package, Amkor Technology. electrical performance, a land pattern must be incorporated on the Printed Circuit Board (PCB) within the footprint of the package corresponding to the exposed metal pad or exposed heat slug on the package, as shown in Figure 1. The solderable area on the PCB, as defined by the solder mask, should be at least the same size/shape as the exposed pad/slug area on the package to maximize the thermal/electrical performance. Sufficient clearance should be designed on the PCB between the outer edges of the land pattern and the inner edges of pad pattern for the leads to avoid any shorts. While the land pattern on the PCB provides a means of heat transfer and electrical grounding from the package to the board through a solder joint, thermal vias are necessary to effectively conduct from the surface of the PCB to the ground plane(s). The land pattern must be connected to ground PIN PIN PAD SOLDER EXPOSED HEAT SLUG GROUND PLANE SOLDER PIN LAND PATTERN THERMAL VIA PIN PAD (GROUND PAD) FIGURE 1. P.C.ASSEMBLY FOR EXPOSED PAD THERMAL RELEASE PATH -SIDE VIEW (DRAWING NOT TO SCALE) IDT5T9306 REVISION C MAY 30, 2012 12 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II SCHEMATIC LAYOUT Figure 2 shows an example of IDT5T9306 schematic. In this example, the device is operated at VDD = 2.5V. As with any high speed analog circuitry, the power supply pins are vulnerable to random noise. To achieve optimum jitter performance, power supply isolation is required. devices. The filter performance is designed for a wide range of noise frequencies. This low-pass filter starts to attenuate noise at approximately 10kHz. If a specific frequency noise component is known, such as switching power supplies frequencies, it is recommended that component values be adjusted and if required, additional filtering be added. Additionally, good general design practices for power plane voltage stability suggests adding bulk capacitance in the local area of all devices. In order to achieve the best possible filtering, it is recommended that the placement of the filter components be on the device side of the PCB as close to the power pins as possible. If space is limited, the 0.1F capacitor in each power pin filter should be placed on the device side of the PCB and the other components can be placed on the opposite side. The schematic example focuses on functional connections and is not configuration specific. Refer to the pin description and functional tables in the datasheet to ensure that the logic control inputs are properly set. Power supply filter recommendations are a general guideline to be used for reducing external noise from coupling into the VD D SEL 28 27 26 25 24 23 22 U1 Q6 / Q6 Q5 / Q5 C1 0.1uF VD D S EL VD D Q6 /Q6 Q5 /Q5 NC VD D C2 0. 1uF VD D Q1 C3 0. 1uF /G C4 0. 1uF + V DD Q1 / Q1 1 2 3 4 5 6 7 /G V DD Q1 / Q1 V DD A1 / A1 / PD VD D Q4 /Q4 VD D A2 / A2 21 20 19 18 17 16 15 /P D Z o_D if f = 100 Ohm Q4 / Q4 C5 0.1uF / Q1 A1 LVDS Termination 8 9 10 11 12 13 14 R6 50 29 GL VD D Q2 /Q2 Q3 /Q3 V DD GN D / A1 R5 50 2. 5V LV PEC L D riv er Q6 VD D C6 0. 1uF C8 0. 1uF Logic Input Pin Examples Set Logic Input to '1' R U1 1K Set Logic Input to '0' VD D /Q6 2.5V BLM18B B221SN 1 1 R D1 N ot Ins tall RD2 1K ToLogic Input pins C9 0.1uF V DD 2 Ferrit e B ead R4 50 C7 0. 1uF R7 50 LVD S D riv er RU2 N ot Ins tall To Logic Input pins Zo_Di f f = 100 Ohm Zo_D if f = 100 Ohm Q2 / Q2 Q3 / Q3 V DD GL R2 18 VD D VDD=2.5V /A2 Zo = 50 - A2 R8 100 Zo = 50 R1 100 + - Alternate LVDS Terminat ion C 10 10uF FIGURE 2. IDT5T3906 SCHEMATIC EXAMPLE IDT5T9306 REVISION C MAY 30, 2012 13 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II RECOMMENDED LANDING PATTERN NL 28 pin NOTE: All dimensions are in millimeters. IDT5T9306 REVISION C MAY 30, 2012 14 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II REVISION HISTORY SHEET July 23, 2002 October 8, 2002 October 10, 2002 October 24, 2002 November 1, 2002 December 12, 2002 December 16, 2002 May 8, 2003 August 7, 2003 October 2, 2003 March 26, 2004 June 22, 2004 October 26, 2004 October 27, 2004 October 29, 2004 March 9, 2005 October 23, 2007 April 15, 2008 January 31, 2011 March 13, 2012 May 30, 2012 Datasheet creation Page 1, entire page changed; page 2, both diagrams; page 3, Pin Description and notes; page 4, DC Cha. for LVPECL and Differential Input tables; page 6, DC Cha. and Power Supply tables; page 7, entire page; page 9, added note 3; page 10, entire page; page 10, entire page; page 11, entire page; page 12, Ordering Info; added 3 new pages (10 thru 12) of diagrams. Page 1, entire page changed; page 2, both diagrams; page 3, Pin Description and notes; page 7, AC Cha. table; page 8, added new LVPECL table; page 10, removed Input Clock Switching diagram; page 11, deleted entire page; page 12, changed Power Down Timing; page 15, Ordering Info. Page 2, added note 1 to TQFP TOP VIEW text; page3, aded note 4 to Pin Description; page 4, replaced "Compliant devices must meet" with the text "This device meets" in four instances; page 5, Differential Input table, note 1, changed 1V to 732mV and replaced "Compliant devices must meet" with the text "This device meets"; page 6, DC Electrical table, Vdif row, changed Min. value to 0.1, and under Differential Input table replaced "Compliant devices must meet" with the text "This device meets" page 7, Power Supply table, replaced ((TBD)) with 800MHz, and under AC Electrical table, replaced ((TBD)) with 500; page 8, completely altered AC DIfferential table; page 12, LVDS Output table, replaced ((TBD)) with 3. Radical changes to entire document. Radical changes to entire document, using 5T9316 as a base. Throughout document, removed "Differential" from title; page 7, Power Supply table, changed Max values, changed FREFERENCE value; page 10, note 1, changed Gx to G. Page 2, corrected pinout diagram. Page 1, Features text, 3rd bullet, changed 2ns to 1.75ns, 4th bullet, changed 800MHz to 1GHz, and 7th bullet, added CML, on Description, 3rd line, added CML to list; page 4, Pin Descr., note 1, added "Differential CML levels", for Description of PD row, replaced 2nd sentence with "Both 'true' and 'complementary' output will pull to Vdd"; page 5, DC... for Differential Inputs table, removed note 5 and changed Vcm Max. from 3.5 to Vdd; page 7, Power Supply table, changed 800MHz to 1GHz; page 8, AC Differential table, changed Vix and Vcm Max specs from 3.5V to Vdd, removed notes 4 and 5, and placed entire table on page 7, for AC Elect. table, added notes 5 and 6, changed ((TBD)) to 300ps, tplh Type to 1.25ns, and Max from 2ns to 1.75ns, and changed fo Max from 800MHz to 1GHz. Page 1, Features, 7th bullet, added "3.3V / 2,5V LVTTL" to front, Description, added to 1st paragraph "A single-ended 3.3V / 2.5V LVTTL input can also be used to translate to LVDS outputs."; page 4, Pin Description table, added large block of text to 2nd row, added "Single-ended 3.3V and 2.5V LVTTL levels" to note 1; page 5, DC for LVTTL table, added Vref row and note 3, for DC for LVDS table, changed Ios ratings from 5 Typ, 7.5 Max to 12 Typ, 24 Max, and changed Iosd ratings from 5 Typ, 7.5 Max to 6 Typ, 12 Max; page 7, Power Supply table, changed Ipd from 3 to 5. Page 2, changed pin 22 to NC; page 3, changed pin 25 to NC; page 4, added NC row to Pin Description. Removed TQFP package. Inserted a page before Ordering Info and added Landing Pattern. Added note to Landing Pattern. Changed landing pattern diagram. Page 6, switched Iddq and Itot values. Page 7, added Additive Phase Jitter, RMS specs to the AC Electrical Characterisitcs Table. Page 7, added Rise/Fall Time spec. to the AC Electrical Characteristics Table. Page 12, added VFQFPN Thermal Release Path application note. Updated to header/footer to new format. Page 13, added schematic layout. Page 16, corrected ordering information table. Page 1, Features Section - changed Low Skew spec to <40ps (max) from <25ps. Page 7, AC Charastics Table - tsk(o) Max from 25ps to 40ps. IDT5T9306 REVISION C MAY 30, 2012 15 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II ORDERING INFORMATION IDT XXXXX Device Type XX Package IDT5T9306 REVISION C MAY 30, 2012 X Process I -40 C to +85 C (Industrial) NLG Thermally Enhanced Plastic Very Fine Pitch Quad Flat No Lead Package - Green 5T9306 2.5V 1:6 LVDS Clock Buffer TerabufferTM II 16 (c)2012 Integrated Device Technology, Inc. IDT5T9306 Data Sheet IDT5T9306 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II 2.5V LVDS 1:6 CLOCK BUFFER TERABUFFERTM II We've Got Your Timing Solution 6024 Silver Creek Valley Road Sales San Jose, CA 95138 800-345-7015 (inside USA) +408-284-8200 (outside USA) Fax: 408-284-2775 www.IDT.com/go/contactIDT Techical Support netcom@idt.com +480-763-2056 DISCLAIMER Integrated Device Technology, Inc. (IDT) and its subsidiaries reserve the right to modify the products and/or specifications described herein at any time and at IDT's sole discretion. All information in this document, including descriptions of product features and performace, is subject to change without notice. Performance specifications and the operating parameters of the described products are determined in the independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitablity of IDT's products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties. IDT's products are not intended for use in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Techology, IDT and the IDT logo are registered trademarks of IDT. Other trademarks and service marks used herein, including protected names, logos and designs, are the property of IDT or their respective third party owners. Copyright 2012. All rights reserved.