DATASHEET ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS Description ICS552-01 (for B mode) The ICS552-01 produces 8 low-skew copies of the multiple input clock or fundamental, parallel-mode crystal. Unlike other clock drivers, these parts do not require a separate oscillator for the input. Using IDT's patented Phase-Locked Loop (PLL) to multiply the input frequency, it is ideal for generating and distributing multiple high-frequency clocks. This is a single chip used for 3 different applications: * * * * * Up to 200 MHz clock input/output at 3.3 V * Low skew of 250 ps maximum for any bank of four * Inputs can be connected together for a 1 to 8 buffer with 250 ps skew between any outputs Non-inverting buffer mode Ideal for clock networks Output Enable mode tri-states outputs Full CMOS output swing with 25 mA output drive capability at TTL levels Advanced, low power, sub-micron CMOS process 1) ICS552-01 (A mode) -- an Oscillator mutiplier * 2) ICS552-01 (B mode) -- a Dual 1:4 buffer ICS552-01 (for C mode) 3) ICS552-01 (C mode) -- a 1:8 Oscillator buffer * Use with 25 MHz crystal for networking * Use with 27 MHz crystal for MPEG Features (all) ICS552-01 (for A and C modes) * * * * * Input frequency of 10.0 to 27.0 MHz * Provides 8 low-skew outputs (<250 ps) * Output clock duty cycle of 40/60 at 3.3 V Packaged as 20-pin SSOP (QSOP) Pb-free packaging available Operating voltages of 3.0 V to 5.5 V Industrial temperature available Features (specific) NOTE: The ICS552A-01 is recommended for new designs ICS552-01 (for A mode) NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 * Contains on-chip multiplier with selections of x1, x1.33, x2, x2.66, x3, x3.33, x4, x4.66, x5, and x6 * Power-down and Tri-state modes Block Diagram (ICS552-01--A mode) VDD S3:S0 4 CLK1 CLK2 CLK3 PLL Multiplier 10.0 to 27.0 MHz crystal or clock input X1 X2 CLK4 CLK5 CLK6 CLK7 Crystal Buffer/ Crystal Oscillator External capacitors are required with a crystal input. CLK8 GND IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 1 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS Pin Assignment (ICS552-01--A mode) CLOCK MULTIPLIER AND BUFFER Multiplier Select Table S3 S2 S1 S0 Multiplier 0 0 0 0 Power Down CLK8 0 0 0 1 x1 17 CLK7 0 0 1 0 x1.333 DC 1 20 S0 X2 2 19 DC X1/ICLK 3 18 VDD 4 S2 5 16 VDD 0 0 1 1 x2 GND 6 15 S3 0 1 0 0 x2.666 CLK1 7 14 GND CLK2 8 13 CLK6 0 1 0 1 x3 CLK3 9 12 CLK5 0 1 1 0 x3.333 CLK4 10 11 S1 0 1 1 1 x4 1 0 0 0 x5 1 0 0 1 x4.66 1 0 1 0 x6 1 1 0 1 Tri-state all 20-pin (150 mil) SSOP (QSOP) Pin Descriptions (ICS552-01--A mode) Pin Number Pin Name Pin Type 1 DC -- Do not connect. 2 X2 XO 3 X1/ICLK XI 4 VDD Power 5 S2 Input Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal. Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal or clock. Connect to +3.3 V or 5 V. Decouple with pin 6. Must be same as other VDDs. Multiplier Select pin 2 per table above. Pin Description 6 GND Power Connect to ground. 7 CLK1 Output Output clock 1. 8 CLK2 Output Output clock 2. 9 CLK3 Output Output clock 3. 10 CLK4 Output Output clock 4. 11 S1 Input 12 CLK5 Output Output clock 5. 13 CLK6 Output Output clock 6. 14 GND Power Connect to ground. Multiplier Select pin 1 per table above 15 S3 Input 16 VDD Power Multiplier Select pin 3 per table above Connect to +3.3 V or 5 V. Decouple with pin 14. Must be same as other VDDs. 17 CLK7 Output Output clock 7. 18 CLK8 Output 19 DC -- Output clock 8. Do not connect. 20 S0 Input Multiplier Select pin 0 per table above IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 2 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Block Diagram (ICS552-01--B mode) QA1 INA QA2 QA3 S1 QA4 Control Logic S0 QB1 QB2 QB3 QB4 INB Pin Assignment (ICS552-01--B mode) INA 1 20 S0 DC 2 19 INB DC 3 18 QB4 VDD 4 17 QB3 VDD 5 16 VDD GND 6 15 VDD QA1 7 14 GND QA2 8 13 QB2 QA3 9 12 QB1 QA4 10 11 S1 20-pin (150 mil) SSOP (QSOP) Clock Output Select Table (ICS552-01--B mode) S1 S0 Mode 0 0 QA1:4 and QB1:4 running 0 1 Test mode 1 0 OE. All outputs in high impedance 1 1 QA1:4 only. QB1:4 stopped low IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 3 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Pin Descriptions (ICS552-01--B mode) Pin Number Pin Name Pin Type 1 INA CI Input to buffer A. Outputs QA1:4 will be the same frequency. Internal pull-up resistor. 2 DC -- Do not connect. Pin Description 3 DC -- 4 VDD Power 5 VDD Power Connect to +3.3 V or 5.0 V. Must be same as other VDDs. Connect to +3.3 V or 5.0 V. Must be same as other VDDs. Do not connect. 6 GND Power Connect to ground. 7 QA1 Output Output 1 from buffer A. 8 QA2 Output Output 2 from buffer A. 9 QA3 Output Output 3 from buffer A. 10 QA4 Output 11 S1 I 12 QB1 Output Output 4 from buffer A. Mode Select pin 1. Selects mode for outputs. Must be at GND for all clocks on. Internal pull-up resistor. Output 1 from buffer B. 13 QB2 Output Output 2 from buffer B. 14 GND Power Connect to ground. 15 VDD Power 16 VDD Power Connect to +3.3 V or 5.0 V. Must be same as other VDDs. Connect to +3.3 V or 5.0 V. Must be same as other VDDs. 17 QB3 Output Output 3 from buffer B. 18 QB4 Output 19 INB CI Output 4 from buffer B. Input to buffer B. Outputs QA1:4 will be the same frequency. Internal pull-up resistor. 20 S0 I Mode Select pin 0. Selects mode for outputs. Must be at GND for all clocks on. Internal pull-up resistor. KEY: CI = clock input with pull-up resistor; I = input with internal pull-up resistor. IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 4 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Block Diagram (ICS552-01--C mode) VDD 5 CLK1 CLK2 CLK3 CLK4 CLK5 10.0 to 27.0 MHz crystal input X1 CLK6 CLK7 Crystal Oscillator CLK8 X2 External capacitors are required with a crystal input. GND 3 Pin Assignment (ICS552-01--C mode) DC 1 20 VDD X2 2 19 DC X1 3 18 CLK8 VDD 4 17 CLK7 GND 5 16 VDD GND 6 15 VDD CLK1 7 14 GND CLK2 8 13 CLK6 CLK3 9 12 CLK5 CLK4 10 11 VDD 20-pin (150 mil) SSOP (QSOP) IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 5 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Pin Descriptions (ICS552-01--C mode) Pin Number Pin Name Pin Type 1 DC -- Do not connect. 2 X2 XO Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal. Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal. Pin Description 3 X1 XI 4 VDD Power 5 GND Power Connect to +3.3 V or 5 V. Decouple with pin 6. Must be same as other VDDs. Connect to ground. 6 GND Power Connect to ground. 7 CLK1 Output Output clock 1. 8 CLK2 Output Output clock 2. 9 CLK3 Output Output clock 3. 10 CLK4 Output Output clock 4. 11 VDD Power Connect to +3.3 V or 5 V. Must be same as other VDDs. 12 CLK5 Output Output clock 5. 13 CLK6 Output Output clock 6. 14 GND Power Connect to ground. 15 VDD Power 16 VDD Power Connect to +3.3 V or 5 V. Must be same as other VDDs. Connect to +3.3 V or 5 V. Decouple with pin 14. Must be same as other VDDs. 17 CLK7 Output Output clock 7. 18 CLK8 Output 19 DC -- Output clock 8. Do not connect. 20 VDD Power Connect to +3.3 V or 5 V. Must be same as other VDDs. IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 6 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS External Components Series Termination Resistor Clock output traces over one inch should use series termination. To series terminate a 50 trace (a commonly used trace impedance), place a 33 resistor in series with the clock line, as close to the clock output pin as possible. The nominal impedance of the clock output is 20. Decoupling Capacitors As with any high-performance mixed-signal IC, the ICS552-01 must be isolated from system power supply noise to perform optimally. Decoupling capacitors of 0.01F must be connected between each VDD and GND on pins 4 and 6, and 16 and 14. Other VDDs and GNDs can be connected to these pins or directly to their respective ground planes. Crystal Load Capacitors The device crystal connections should include pads for small capacitors from X1 to ground and from X2 to ground. These capacitors are used to adjust the stray capacitance of the board to match the nominally required crystal load capacitance. Because load capacitance can only be increased in this trimming process, it is important to keep stray capacitance to a minimum by using very short PCB traces (and no vias) been the crystal and device. Crystal capacitors must be connected from each of the pins X1 and X2 to ground. CLOCK MULTIPLIER AND BUFFER PCB Layout Recommendations For optimum device performance and lowest output phase noise, the following guidelines should be observed. 1) Each 0.01F decoupling capacitor should be mounted on the component side of the board as close to the VDD pin as possible. No vias should be used between decoupling capacitor and VDD pin. The PCB trace to VDD pin should be kept as short as possible, as should the PCB trace to the ground via. 2) The external crystal should be mounted just next to the device with short traces. The X1 and X2 traces should not be routed next to each other with minimum spaces, instead they should be separated and away from other traces. 3) To minimize EMI, the 33 series termination resistor (if needed) should be placed close to the clock output. 4) An optimum layout is one with all components on the same side of the board, minimizing vias through other signal layers. The value (in pF) of these crystal caps should equal (CL -12 pF)*2. In this equation, CL= crystal load capacitance in pF. Example: For a crystal with a 18 pF load capacitance, two 12 pF capacitors should be used. For a clock input, connect it X1/ICLK and leave X2 unconnected (floating). IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 7 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS552-01. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. Parameter Condition Min. Supply Voltage, VDD Referenced to GND Inputs Referenced to GND Clock Outputs Referenced to GND Storage Temperature Soldering Temperature Typ. Max. Units 7 V -0.5 VDD+0.5 V -0.5 VDD+0.5 V -65 150 C 260 C 125 C Max 10 seconds Junction Temperature Recommended Operation Conditions Parameter Min. Ambient Operating Temperature (commercial) Ambient Operating Temperature (industrial) Typ. Max. Units 0 +70 C -40 +85 C DC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V or 5 V, Ambient Temperature -40 to +85 C Parameter Symbol Conditions Operating Voltage VDD Input High Voltage VIH ICLK Input Low Voltage VIL ICLK Input High Voltage VIH S3:S0 Input Low Voltage VIL S3:S0 Output High Voltage VOH VDD = 3.3 V, IOH = -8 mA Output Low Voltage VOL VDD = 3.3 V, IOL = 8 mA Output High Voltage VOH VDD = 3.3 V or 5 V, IOH = -8 mA Short Circuit Current IOS VDD = 3.3 V, each output Min. Typ. 3.0 IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 8 VDD/2+1 Max. Units 5.5 V VDD/2 VDD/2 V VDD/2-1 2 V V 0.8 2.4 V V 0.4 VDD-0.4 V V 50 mA ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Parameter Symbol Conditions Min. Typ. Max. Units Operating Supply Current IDD at 3.3 V, no load, 25 MHz in, x4 35 mA Operating Supply Current IDD at 5 V, no load, 25 MHz in, x4 59 mA Power-down Supply Current IDD S3:S0 = 0 (GND) 55 A AC Electrical Characteristics Unless stated otherwise, VDD = 3.3 V or 5 V, Ambient Temperature -40 to +85 C Parameter Input Frequency Symbol FIN Conditions Min. Typ. Max. Units Fundamental crystal 10 27 MHz Input clock- non-buffered mode 10 27 MHz Input clock- buffered mode only 10 200 MHz Output Rise Time tOR 0.8 to 2.0 V 1.5 ns Output Fall Time tOF 2.0 to 0.8 V 1.5 ns 60 % 250 ps Duty Cycle at VDD/2 40 50 Output-to-Output Skew All modes, Rising edges at VDD/2 Absolute Jitter Mode A, Deviation from Mean 75 ps One Sigma Clock Period Jitter Mode A 25 ps Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Symbol Conditions Min. Typ. Max. Units JA Still air 135 C/W JA 1 m/s air flow 93 C/W JA 3 m/s air flow 78 C/W 60 C/W JC IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 9 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Package Outline and Package Dimensions (20-pin SSOP, 150 Mil. Wide Body) Package dimensions are kept current with JEDEC Publication No. 95 Millimeters 20 Symbol E1 A A1 A2 b c D E E1 e L aaa E INDEX AREA 1 2 D A A2 Min Max 1.35 1.75 0.10 0.25 -1.50 0.20 0.30 0.18 0.25 8.55 8.75 5.80 6.20 3.80 4.00 .635 Basic 0.40 1.27 0 8 -0.10 A1 Inches Min Max 0.053 0.069 0.004 0.010 -0.059 0.008 0.012 0.007 0.010 0.337 0.344 0.228 0.244 0.150 0.157 .025 Basic 0.016 0.050 0 8 -0.004 c -Ce SEATING PLANE b L aaa C Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature 552R-01* ICS552R-01 Tubes 20-pin SSOP 0 to +70 C 552R-01T* ICS552R-01 Tape and Reel 20-pin SSOP 0 to +70 C 552R-01LN 552R-01LN Tubes 20-pin SSOP 0 to +70 C 552R-01LNT 552R-01LN Tape and Reel 20-pin SSOP 0 to +70 C 552R-01I* ICS552R-01I Tubes 20-pin SSOP -40 to +85 C 552R-01IT* ICS552R-01I Tape and Reel 20-pin SSOP -40 to +85 C 552R-01ILF 552R-01ILF Tubes 20-pin SSOP -40 to +85 C 552R-01ILFT 552R-01ILF Tape and Reel 20-pin SSOP -40 to +85 C *NOTE: EOL for non-green parts to occur on 5/13/10 per PDN U-09-01 Parts that are ordered with a "LF"or "LN" suffix to the part 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 (IDT) assumes no responsibility for either its use or for the 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 applications. Any other applications such as those requiring extended temperature range, 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. IDTTM / ICSTM OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 10 ICS552-01 REV G 092309 ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER 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 www.idt.com/go/clockhelp Corporate Headquarters Integrated Device Technology, Inc. www.idt.com (c) 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT and the IDT logo 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