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| ICS552-01A Crystal Oscillator & Multiplier with 8 Low Skew Outputs Description The ICS552-01A produces 8 low skew copies of a multiple of the input when a clock or fundamental, parallel-mode crystal is connected to it. Unlike other clock drivers, it does not require a separate oscillator for the input. Using a phaselocked loop (PLL) to multiply the input frequency, it is ideal for generating and distributing multiple high frequency clocks. Features * Packaged in 20 pin SSOP (QSOP) * Input frequency of 10.0 - 27.0 MHz * Contains on-chip multiplier with selections of x1, x1.33, x2, x2.66, x3, x3.33, x4, x4.66, x5, and x6 * Provides 8 low skew outputs (<250 ps) * Output clock duty cycle of 40/60 at 3.3 V * Operating voltages of 3.0 V to 5.5 V * Industrial temperature available * Power Down and Tri state modes GND Block Diagram VDD Output Buffer CLK1 CLK2 CLK3 CLK4 CLK5 CLK6 CLK7 CLK8 S3:S0 4 PLL Multiplier Output Buffer Output Buffer Output Buffer 10.0 - 27.0 MHz crystal or clock X1 Clock Buffer/ Crystal Oscillator X2 Output Buffer Output Buffer Output Buffer Output Buffer 1 Revision 032200 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 * (408) 295-9800tel * www.icst.com MDS 552-01 AB ICS552-01A Crystal Oscillator & Multiplier with 8 Low Skew Outputs Pin Assignment DC X2 X1/ICLK VDD S2 GND CLK1 CLK2 CLK3 CLK4 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 S0 DC CLK8 CLK7 VDD S3 GND CLK6 CLK5 S1 Multiplier Select Table S3 0 0 0 0 0 0 0 0 1 1 1 1 S2 0 0 0 0 1 1 1 1 0 0 0 1 S1 0 0 1 1 0 0 1 1 0 0 1 0 S0 0 1 0 1 0 1 0 1 0 1 0 1 Multiplier Power Down x1 x1.333 x2 x2.666 x3 x3.333 x4 x5 x4.66 x6 Tri state All 20 pin SSOP (QSOP) Pin Descriptions Pin # 1 2 3 4 5 6 7 0 = connect directly to ground. 1 = connect directly to VDD. All clocks stop low in Power Down state. All clocks outputs are high impedance in 1101 mode. 8 9 10 11 12 13 14 15 16 17 18 19 20 Name DC X2 X1/ICLK VDD S2 GND CLK1 CLK2 CLK3 CLK4 S1 CLK5 CLK6 GND S3 VDD CLK7 CLK8 DC S0 Type XO XI P I P O O O O I O O P I P O O I Description Don't connect. 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 +5.0 V. Decouple with pin 6. Multiplier Select Pin 2 per table above. Connect to ground. Clock Output 1. Clock Output 2. Clock Output 3. Clock Output 4. Multiplier Select Pin 1 per table above. Clock Output 5. Clock Output 6. Connect to ground. Multiplier Select Pin 3 per table above. Connect to +3.3 V or +5.0 V. Decouple with pin 14. Clock Output 7. Clock Output 8. Don't connect. Multiplier Select Pin 0 per table above. Key: I = Input; O = output; P = power supply connection, XI, XO = crystal connections 2 Revision 032200 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 * (408) 295-9800tel * www.icst.com MDS 552-01 AB ICS552-01A Crystal Oscillator & Multiplier with 8 Low Skew Outputs Electrical Specifications Parameter Supply voltage, VDD Inputs and Clock Outputs Ambient Operating Temperature Soldering Temperature Storage temperature Operating Voltage, VDD Input High Voltage, VIH Input Low Voltage, VIL Input High Voltage, VIH Input Low Voltage, VIL Output High Voltage, VOH Output Low Voltage, VOL Output High Voltage, VOH, VDD = 3.3 or 5 V Operating Supply Current, IDD, at 3.3 V Operating Supply Current, IDD, at 5 V Power Down Supply Current, IDD, at 3.3 V Short Circuit Current, VDD = 3.3 V Input Crystal or Clock Frequency Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Output to Output Skew Note: Conditions Referenced to GND Referenced to GND Commercial Industrial Max of 10 seconds Minimum Typical Maximum 7 VDD+0.5 70 85 260 150 5.5 VDD/2 VDD/2 (VDD/2)-1 0.8 2.4 0.4 VDD-0.4 35 59 55 50 10 0.8 to 2.0 V 2.0 to 0.8 V At VDD/2 Rising edges at VDD/2 27 1.5 1.5 60 250 Units V V C C C C V V V V V V V V mA mA A mA MHz ns ns % ps ABSOLUTE MAXIMUM RATINGS (note 1) -0.5 0 -40 -65 3.0 (VDD/2)+1 2 DC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted) ICLK ICLK S3:S0 S3:S0 VDD=3.3V, IOH=-8mA VDD=3.3V, IOL=8mA IOH=-8mA No Load, 25 MHz in, x4 No Load, 25 MHz in, x4 S3:S0 = 0 (Gnd) Each output AC CHARACTERISTICS (VDD = 3.3 V or 5 V unless noted) 40 50 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability. External Components A minimum number of external components are required for proper operation. A decoupling capacitor of 0.01 uF should be connected between 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 power planes. A 33 series terminating resistor may be used on the clock output if the trace is longer than 1-inch. The crystal should be a fundamental mode (do not use third overtone), parallel resonant, with accuracy as required by the application. Crystal capacitors should be connected from pins X1 to ground and X2 to ground. The value of these capacitors is given by the following equation, where CL is the crystal load capacitance: Crystal caps (pF) = (CL -12) x 2. So for a crystal with 18pF load capacitance, two 12pF caps should be used. For a clock input, connect it to X1/ICLK, and leave X2 unconnected (floating). 3 Revision 032200 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 * (408) 295-9800tel * www.icst.com MDS 552-01 AB ICS552-01A Crystal Oscillator & Multiplier with 8 Low Skew Outputs Package Outline and Package Dimensions (For current dimensional specifications, see JEDEC Publication No. 95.) 20 pin SSOP Symbol A A1 b c D e E E1 L Inches Min Max 0.053 0.069 0.004 0.010 0.008 0.012 0.007 0.010 0.337 0.344 .025 BSC 0.228 0.244 0.150 0.157 0.016 0.050 Millimeters Min Max 1.35 1.75 0.10 0.25 0.20 0.30 0.19 0.25 8.56 8.74 0.635 BSC 5.79 6.20 3.81 3.99 0.41 1.27 E1 E INDEX AREA 1 2 D A1 e b c A L Ordering Information Part/Order Number ICS552R-01 ICS552R-01T ICS552R-01I ICS552R-01IT Marking ICS552R-01 ICS552R-01 ICS552R-01I ICS552R-01I Package 20 pin SSOP 20 pin SSOP 20 pin SSOP 20 pin SSOP Shipping Tubes Tape and Reel Tubes Tape and Reel Temperature 0 to 70 C 0 to 70 C -40 to 85 C -40 to 85 C While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) 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 ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS product for use in life support devices or critical medical instruments. 4 Revision 032200 Printed 11/14/00 Integrated Circuit Systems * 525 Race Street * San Jose * CA * 95126 * (408) 295-9800tel * www.icst.com MDS 552-01 AB |
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