ICS81006I VCXO-TO-LVCMOS OUTPUTS GENERAL DESCRIPTION FEATURES The ICS81006I is a high performance, low jitter/ ICS low phase noise VCXO and is a member of the HiPerClockS™ HiPerClockS™ family of high performance clock solutions from IDT. The ICS81006I works in conjunction with a pullable crystal to generate an output clock over the range of 12MHz - 40MHz and has 6 LVCMOS outputs, effectively integrating a fanout buffer function. • Six LVCMOS/LVTTL outputs, 20Ω nominal output impedance • Output Q5 can be selected for ÷1 or ÷2 frequency relative to the crystal frequency • Output frequency range: 12MHz to 40MHz • Crystal pull range: ± 90ppm (typical) • Synchronous output enable places outputs in High-Z state The frequency of the VCXO is adjusted by the VC control voltage input. The output range is ±100ppm around the nominal crystal frequency. The VC control voltage range is 0 - V DD . The device is packaged in a small 4mm x 4mm VFQFN package and is ideal for use on space constrained boards typically encountered in ADSL/VDSL applications. • On-chip filter on VIN to suppress noise modulation of VCXO • VDD/VDDO combinations 3.3V/3.3V 3.3V/2.5V 3.3V/1.8V 2.5V/2.5V 2.5V/1.8V • 4mm x 4mm 20 Lead VFQFN package is ideal for space constrained designs • -40°C to 85°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages VCXO Q2 XTAL_OUT Q1 VDDO 20 19 18 17 16 15 XTAL_OUT 2 14 Q2 VDD 3 13 VDDO VC 4 12 Q3 DIV_SEL_Q5 5 6 7 8 9 11 10 Q4 XTAL_IN 1 VDDO Q1 XTAL_IN Q5 Q0 LP Filter Q0 OE0 SYNC GND VC (Pullup) OE1 OE0 PIN ASSIGNMENT GND BLOCK DIAGRAM GND GND Q3 ICS81006I Q4 0: ÷1 1: ÷2 DIV_SEL_Q5 OE1 20-Lead VFQFN 4mm x 4mm x 0.95 package body K Package Top View Q5 (Pulldown) (Pullup) SYNC IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 1 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS TABLE 1. PIN DESCRIPTIONS Number 3 Name XTAL_IN, XTAL_OUT VDD Power 4 VC Input 1, 2 Type Input Description Crystal oscillator interface. XTAL_IN is the input. XTAL_OUT is the output. Core supply pin. Control voltage input. Output divider select pin for Q5 output. When LOW, ÷1. When HIGH, 5 DIV_SEL_Q5 Input Pulldown ÷2, LVCMOS/LVTTL interface levels. Output enable pin. When HIGH, Q5 output is enabled. 6 OE1 Input Pullup When LOW, forces Q5 to HiZ state. LVCMOS/LVTTL interface levels. 7 , 1 1, 1 5 , 1 9 GND Power Power supply ground. 8 , 1 0, 12, Q5, Q4, Q3, Single-ended clock outputs. LVCMOS/LVTTL interface levels. Output 14, 16, 18 Q2, Q1, Q0 15Ω typical output impedance. Power Output supply pins. 9, 13, 17 VDDO Output enable pin. When HIGH, Q0:Q4 outputs are enabled. When 20 OE0 Input Pullup LOW, forces Q0:Q4 to HiZ state. LVCMOS/LVTTL interface levels. NOTE: Pullup and Pulldown refers to internal input resistors. See Table 2, Pin Characteristics, for typical values. TABLE 2. PIN CHARACTERISTICS Symbol Parameter CIN Input Capacitance CPD Test Conditions Maximum Units VDD = VDDO = 3.465V 3 pF VDD = 3.465V or 2.625V, VDDO = 2.625V 4 pF VDD = 3.465V or 2.625V, VDDO = 2V 6 pF OE0, OE1 Power Dissipation Capacitance Minimum Typical 4 pF RPULLUP Input Pullup Resistor 51 kΩ RPULLDOWN Input Pulldown Resistor 51 kΩ ROUT Output Impedance IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS VDDO = 3.3V 20 Ω VDDO = 2.5V 25 Ω VDDO = 1.8V 38 Ω 2 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS ABSOLUTE MAXIMUM RATINGS Supply Voltage, VDD 4.6V Inputs, VI -0.5V to VDD + 0.5 V Outputs, VO -0.5V to VDD + 0.5V NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause per manent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the DC Characteristics or AC Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Package Thermal Impedance, θJA 60.4°C/W (0 mps) Storage Temperature, TSTG -65°C to 150°C TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 3.3V±5% = 2.5V±5% = 1.8V±0.2V, TA = -40°C TO 85°C Symbol Parameter Minimum Typical Maximum Units VDD Core Supply Voltage Test Conditions 3.135 3.3 3.465 V 3.135 3.3 3.465 V VDDO Output Supply Voltage 2.375 2.5 2.625 V 1.6 1.8 2.0 V IDD Power Supply Current 50 mA IDDO Output Supply Current 20 mA TABLE 3B. POWER SUPPLY DC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 2.5V±5% = 1.8V±0.2V, TA = -40°C TO 85°C Symbol Parameter VDD Core Supply Voltage Test Conditions VDDO Output Supply Voltage IDD Power Supply Current IDDO Output Supply Current Minimum Typical Maximum Units 2.375 2.5 2.625 V 2.375 2. 5 2.625 V 1.6 1.8 2.0 V 50 mA 20 mA TABLE 3C. LVCMOS/LVTTL DC CHARACTERISTICS, TA = -40°C TO 85°C Symbol VIH Parameter Input High Voltage OE0, OE1, DIV_SEL_Q5 VIL Input Low Voltage VC VCXO Control Voltage IIH Input High Current Maximum Units 2 VDD + 0.3 V VDD = 2.5V ± 5% 1.7 VDD + 0.3 V VDD = 3.3V ± 5% -0.3 0. 8 V VDD = 2.5V ± 5% -0.3 0.7 V 0 VDD = 3.3V or 2.5V ± 5% Typical VDD V 150 µA 5 µA OE0, OE1 VDD = 3.3V or 2.5V ± 5% DIV_SEL_Q5 VDD = 3.3V or 2.5V ± 5% -5 µA OE0, OE1 VDD = 3.3V or 2.5V ± 5% -150 µA VDD = 3.465V or 2.625V -100 VDDO = 3.3V ± 5% 2.6 V VDDO = 2.5V ± 5% 1.8 V VDDO = 1.8V ± 0.2V 1.5 Input Low Current II Input Current of VC pin VOL Minimum VDD = 3.3V ± 5% DIV_SEL_Q5 IIL VOH Test Conditions Output High Voltage;NOTE 1 Output Low Voltage;NOTE 1 100 µA V VDDO = 3.3V or 2.5V ± 5% 0.5 V VDDO = 1.8V ± 0.2V 0.4 V NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement section, "Load Test Circuit" diagrams. IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 3 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS TABLE 4A. AC CHARACTERISTICS, VDD = VDDO = 3.3V±5%, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency RMS Phase Jitter (Random); NOTE 1 Q0:Q4 Output Skew; NOTE 2, 3 Q0:Q5 tjit(Ø) tsk(o) t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Maximum Units 12 19.44 40 MHz Integration Range: 1kHz- 1MHz 0.35 DIV_SEL_Q5 = ÷1 20% to 80% 200 odc Output Duty Cycle 44 NOTE 1: Please refer to the Phase Noise Plot. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential cross points. NOTE 3: This parameter is defined in accordance with JEDEC Standard 65. ps 30 ps 100 ps 750 ps 56 % TABLE 4B. AC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 2.5V±5%, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency RMS Phase Jitter (Random); NOTE 1 Q0:Q4 Output Skew; NOTE 2, 3 Q0:Q5 tjit(Ø) tsk(o) t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Maximum Units 12 19.44 40 MHz Integration Range: 1kHz- 1MHz 0.38 DIV_SEL_Q5 = ÷1 20% to 80% 300 odc Output Duty Cycle 45 NOTE 1: Please refer to the Phase Noise Plot. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential cross points. NOTE 3: This parameter is defined in accordance with JEDEC Standard 65. ps 20 ps 90 ps 800 ps 55 % TABLE 4C. AC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency RMS Phase Jitter (Random); NOTE 1 Q0:Q4 Output Skew; NOTE 2, 3 Q0:Q5 tjit(Ø) tsk(o) t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Maximum Units 12 19.44 40 MHz Integration Range: 1kHz-1MHz 0.27 DIV_SEL_Q5 = ÷1 20% to 80% 450 odc Output Duty Cycle 45 NOTE 1: Please refer to the Phase Noise Plot. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential cross points. NOTE 3: This parameter is defined in accordance with JEDEC Standard 65. IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 4 ps 50 ps 180 ps 1400 ps 55 % ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS TABLE 4D. AC CHARACTERISTICS, VDD = VDDO = 2.5V±5%, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency RMS Phase Jitter (Random); NOTE 1 Q0:Q4 Output Skew; NOTE 2, 3 Q0:Q5 tjit(Ø) tsk(o) t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Maximum Units 12 19.44 40 MHz Integration Range: 1kHz-1MHz 0.28 ps 25 DIV_SEL_Q5 = ÷1 20% to 80% 300 odc Output Duty Cycle 45 NOTE 1: Please refer to the Phase Noise Plot. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential cross points. NOTE 3: This parameter is defined in accordance with JEDEC Standard 65. ps 105 ps 800 ps 55 % TABLE 4E. AC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 1.8V±0.2V, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency RMS Phase Jitter (Random); NOTE 1 Q0:Q4 Output Skew; NOTE 2, 3 Q0:Q5 tjit(Ø) tsk(o) t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Maximum Units 12 19.44 40 MHz Integration Range: 1kHz-1MHz 0.26 DIV_SEL_Q5 = ÷1 20% to 80% 450 odc Output Duty Cycle 40 NOTE 1: Please refer to the Phase Noise Plot. NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the output differential cross points. NOTE 3: This parameter is defined in accordance with JEDEC Standard 65. IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 5 ps 40 ps 185 ps 1400 ps 60 % ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS PARAMETER MEASUREMENT INFORMATION 1.65V±5% 2.05V±5% 1.25V±5% SCOPE VDD, VDDO SCOPE VDD Qx VDDO Qx LVCMOS GND LVCMOS GND -1.65V±5% -1.25V±5% 3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT 3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT 2.4V±0.065V 1.25V±5% 0.9V±0.1V SCOPE VDD VDDO SCOPE VDD, VDDO Qx Qx LVCMOS GND LVCMOS GND -1.25V±5% -0.9V±0.1V 3.3V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT 2.5V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT 1.6V±0.025V Phase Noise Plot Noise Power 0.9V±0.1V SCOPE VDD VDDO Phase Noise Mask Qx GND LVCMOS f1 Offset Frequency f2 RMS Jitter = Area Under the Masked Phase Noise Plot -0.9V±0.1V 2.5 CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS RMS PHASE JITTER 6 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS V V DD DDO Qx 2 2 Q0:Q5 t PW t V DDO Qy 2 t sk(o) odc = PERIOD t PW x 100% t PERIOD OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD OUTPUT SKEW Clock Outputs 80% 80% tR tF 20% 20% OUTPUT RISE/FALL TIME IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 7 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS APPLICATION INFORMATION VCXO CRYSTAL SELECTION accuracy of a VCXO. Below are the key variables and an example of using the crystal parameters to calculate the tuning range of the VCXO. Choosing a crystal with the correct characteristics is one of the most critical steps in using a Voltage Controlled Crystal Oscillator (VCXO). The crystal parameters affect the tuning range and ➤ VC Oscillator Control Voltage CV ➤ ➤C V VCXO (Internal) XTAL CS1 CS2 ➤ CL1 Optional ➤ CL2 FIGURE 1: VCXO OSCILLATOR CIRCUIT CL1, CL2 Load tuning capacitance used for fine tuning or centering nominal frequency VC Control voltage used to tune frequency CV Varactor capacitance, varies due to the change in control voltage CS1, CS2 Stray Capacitance caused by pads, vias, and other board parasitics TABLE 5. EXAMPLE CRYSTAL PARAMETERS Symbol Parameter fN Nominal Frequency fT Frequency Tolerance fS Frequency Stability Test Conditions Minimum Typical Maximum 19.44 Operating Temperature Range 0 Units MHz ±20 ppm ±20 ppm 70 °C CL Load Capacitance 12 pF CO Shunt Capacitance 4 pF C0, C1 Pullability Ratio ESR Equivalent Series Resistance 220 20 Drive Level 1 Aging @ 25°C ±3 per year Mode of Operation IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 240 mW ppm Fundamental 8 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS TABLE 6. VARACTOR PARAMETERS Symbol Parameter CV_LOW Low Varactor Capacitance Test Conditions VC = 0V Minimum 15.4 pF CV_HIGH High Varactor Capacitance VC = 3.3V 29. 6 pF FORMULAS C Low = (C (C L1 L1 + C S 1 + CV _ Low ) ⋅ (C L 2 + C S 2 + CV _ Low ) C High = + C S 1 + CV _ Low ) + (C L 2 + C S 2 + CV _ Low ) (C (C L1 Typical Maximum Units + C S1 + CV _ High ) ⋅ (C L 2 + C S 2 + CV _ High ) L1 + C S 1 + CV _ High ) + (C L 2 + C S 2 + CV _ High ) • CLow is the effective capacitance due to the low varactor capacitance, load capacitance and stray capacitance. CLow determines the high frequency component on the TPR. • CHigh is the effective capacitance due to the high varactor capacitance, load capacitance and stray capacitance. CHigh determines the low frequency component on the TPR. 1 1 ⋅ 10 6 Total Pull Range (TPR ) = − C Low C C 0 High 2 ⋅ C 0 C 1 ⋅ 1 + 2 ⋅ C 1 ⋅ 1 + C 0 C 0 Absolute Pull Range (APR) = Total Pull Range – (Frequency Tolerance + Frequency Stability + Aging) EXAMPLE CALCULATIONS aging is ±15ppm. Third, though many boards will not require load tuning capacitors (CL1, CL2), it is recommended for long-term consistent performance of the system that two tuning capacitor pads be placed into every design. Typical values for the load tuning capacitors will range from 0 to 4pF. Using the tables and figures above, we can now calculate the TPR and APR of the VCXO using the example crystal parameters. For the numerical example below there were some assumptions made. First, the stray capacitance (CS1, CS2), which is all the excess capacitance due to board parasitic, is 4pF. Second, the expected lifetime of the project is 5 years; hence the inaccuracy due to CLow = (0 + 4 pf + 15.4 pf ) ⋅ (0 + 4 pf + 15.4 pf ) = 9.7 pf (0 + 4 pf + 15.4 pf ) + (0 + 4 pf + 15.4 pf ) CHigh = (0 + 4 pf + 29.6 pf ) ⋅ (0 + 4 pf + 29.6 pf ) = 16.8 pf (0 + 4 pf + 29.6 pf ) + (0 + 4 pf + 29.6 pf ) 1 1 ⋅ 106 ⋅ = 226.5 ppm − TPR = 2 ⋅ 220 ⋅ 1 + 16.8 pF 2 ⋅ 220 ⋅ 1 + 9.7 pF 4 pF 4 pF TPR = ±113.25ppm APR = 113.25ppm – (20ppm + 20ppm + 15ppm) = ±58.25ppm The example above will ensure a total pull range of ±113.25 ppm with an APR of ±58.25ppm. Many times, board designers may select their own cr ystal based on their application. If the application requires a tighter APR, a crystal IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS with better pullability (C0/C1 ratio) can be used. Also, with the equations above, one can vary the frequency tolerance, temperature stability, and aging or shunt capacitance to achieve the required pullability. 9 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS OUTPUTS: INPUTS: LVCMOS OUTPUT: All unused LVCMOS output can be left floating. We recommend that there is no trace attached. CONTROL PINS: All control pins have internal pull-ups or pull-downs; additional resistance is not required but can be added for additional protection. A 1kΩ resistor can be used. The VC pin can not be floated. SCHEMATIC EXAMPLE Figure 2 shows an example of ICS81006I application schematic. The decoupling capacitors should be located as close as possible to the power pin. For the LVCMOS 20Ω output drivers, series termination example is shown in the schematic. Additional termination approaches are shown in the LVCMOS Termination Application Note. Pull-up VDD example R4 1K VDD R1 Zo = 50 U1 1 2 3 4 5 XTAL XTAL_IN XTAL_OUT VDD VC DIV_SEL_Q5 GND Q2 VDDO Q3 GND 15 14 13 12 11 OE1 GND Q5 VDDO Q4 C2 SPARE 81006I81006 Pull-down example 6 7 8 9 10 VC VC = 0V to VDD 30 OE0 GND Q0 VDDO Q1 C1 SPARE 20 19 18 17 16 Quartz crystal should be placed as close to the device as possible. VDDO R3 1K R2 Zo = 50 VDD 30 R5 (U1-3) (U1-9) VDD C7 10uf 1K (U1-13) (U1-17) VDDO C6 0.1uF C5 0.1uF C4 0.1uF Unused outputs can be left floating. There should be no trace attached to unused outputs. Device characterized and specification limits set with all outputs terminated. C3 0.1uF FIGURE 2. ICS81006I SCHEMATIC EXAMPLE IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 10 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS RELIABILITY INFORMATION TABLE 7. θJAVS. AIR FLOW TABLE FOR 20 LEAD VFQFN θJA by Velocity (Meters per Second) Multi-Layer PCB, JEDEC Standard Test Boards 0 1 3 60.4°C/W 52.8°C/W 46.0°C/W TRANSISTOR COUNT The transistor count for ICS81006I is: 983 IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 11 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS PACKAGE OUTLINE - K SUFFIX FOR 20 LEAD VFQFN TABLE 8. PACKAGE DIMENSIONS FOR 20 LEAD VFQFN JEDEC VARIATION ALL DIMENSIONS IN MILLIMETERS SYMBOL MINIMUM 20 N A 0.80 A1 0 1.0 0.05 0.25 Reference A3 b MAXIMUM 0.18 0.30 e 0.50 BASIC ND 5 NE 5 D 4.0 D2 0.75 2.80 4.0 E E2 0.75 2.80 L 0.35 0.75 Reference Document: JEDEC Publication 95, MO-220 IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 12 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS TABLE 9. ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature ICS81006AKI 1006AI 20 lead VFQFN tube -40°C to 85°C ICS81006AKIT 1006AI 20 lead VFQFN 2500 tape & reel -40°C to 85°C ICS81006AKILF TBD 20 lead "Lead-Free" VFQFN tube -40°C to 85°C ICS81006AKILFT TBD 20 lead "Lead-Free" VFQFN 2500 tape & reel -40°C to 85°C NOTE: Par ts that are ordered with an "LF" suffix to the par t number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial and industrial applications. Any other applications such as those requiring high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT ™ / ICS™ VCXO-TO-LVCMOS OUTPUTS 13 ICS81006AKI REV A OCTOBER 2, 2006 ICS81006I VCXO-TO-6 LVCMOS OUTPUTS Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 [email protected] 480-763-2056 Corporate Headquarters Asia Pacific and Japan Europe Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 IDT Europe, Limited 321 Kingston Road Leatherhead, Surrey KT22 7TU England +44 (0) 1372 363 339 Fax: +44 (0) 1372 378851 © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA