ICS2402 Multiplier and Zero Delay Buffer Description Features The ICS2402 is a high-performance Zero Delay Buffer (ZDB) which integrates ICS’ proprietary analog/digital Phase-Locked Loop (PLL) techniques. The chip is part of ICS’ ClockBlocksTM family and was designed as a performance upgrade to meet today’s higher speed and lower voltage requirements. The zero delay feature means that the rising edge of the input clock aligns with the rising edges of both output clocks, giving the appearance of no delay through the device. • • • • • • • • • The ICS2402 is ideal for synchronizing outputs in a large variety of systems, from personal computers to data communications to graphics/video. By allowing off-chip feedback paths, the device can eliminate the delay through other devices. • • 8-pin SOIC package Available in Pb (lead) free package Absolute jitter ±100 ps Propagation Delay of ±600 ps Output multiplier of 2X Output clock frequency up to 80 MHz Can recover degraded input clock duty cycle Output clock duty cycle of 45/55 Full CMOS clock swings with 25 mA drive capability at TTL levels Advanced, low power CMOS process Operating voltage of 3.3 V or 5 V Block Diagram ICLK S0 FBIN MDS 2402 D divide by N Phase Detector, Charge Pump, and Loop Filter 1 VCO CLK1 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer Pin Assignment ICLK 1 8 CLK NC 2 7 VDD GND 3 6 S0 FBIN 4 5 NC 8 pin (150 mil) SOIC Clock Multiplier Decoding Table 1 (Multiplies Input clock by shown amount) S0 CLK 0 1 2 X ICLK ICLK Pin Descriptions Pin Number Pin Name Pin Type 1 2 3 4 5 6 7 8 ICLK NC GND FBIN NC S0 VDD CLK Input — Power Input — Input Power Output MDS 2402 D Pin Description Reference clock input. No connect. Do not connect to anything. Connect to ground. Feedback clock input. No connect. Do not connect to anything. Select pin for Clock Multiplier Decoding Table above. Connect to +3.3 V or +5.0 V. Clock output per table above. 2 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer External Components The ICS2402 requires a 0.01µF decoupling capacitor to be connected between VDD and GND. It must be connected close to the part to minimize lead inductance. No external power supply filtering is required for this device. A 33Ω series terminating resistor can be used next to each output pin. Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS2402. These ratings, which are standard values for ICS 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. Item Rating Supply Voltage, VDD 7V All Inputs and Outputs -0.5 V to VDD+0.5 V Ambient Temperature under Bias -55 to 125°C Storage Temperature -65 to +150°C Junction Temperature 125°C Power Dissipation 0.5 W Recommended Operation Conditions Parameter Min. Ambient Operating Temperature Typ. 0 Max. Units +70 °C Power Supply Voltage (measured in respect to GND) +4.5 +5.0 +5.5 V Power Supply Voltage (measured in respect to GND) +3.15 +3.3 +3.45 V MDS 2402 D 3 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer DC Electrical Characteristics VDD = 3.3 V ±5%, Ambient Temperature 0 to +70°C Parameter Symbol Conditions Operating Voltage VDD Operating Current IDD Input High Voltage VIH ICLK, FBIN, S0 Input Low Voltage VIL ICLK, FBIN, S0 Output High Voltage VOH IOH = -12 mA Output Low Voltage VOL IOL = 12 mA Short Circuit Current IOS CLK Input Capacitance CIN S0 Min. Typ. 3.15 Max. Units 3.45 V 20 mA 2 V 0.8 2.4 V V 0.4 V ±50 mA 5 pF VDD = 5 V ±10%, Ambient Temperature 0 to +70°C Parameter Symbol Conditions Operating Voltage VDD Operating Current IDD Input High Voltage VIH ICLK, FBIN, S0 Input Low Voltage VIL ICLK, FBIN, S0 Output High Voltage VOH IOH = -12 mA Output Low Voltage VOL IOL = 12 mA Short Circuit Current ISC Each output Input Capacitance CIN S0 MDS 2402 D 5V Min. Typ. 4.5 Max. Units 5.5 V 30 4 mA 0.7xVDD V 0.2xVDD 4.5 V V 0.5 V ±80 mA 5 pF Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer AC Electrical Characteristics VDD = 3.3 V ±5%, or 5 V ±10%, Ambient Temperature 0 to +70° C Parameter Symbol Input Frequency, ICLK Conditions Min. Typ. Max. Units S0=1 10 80 MHz S0=0 10 40 MHz 10 80 MHz Output Frequency, CLK Input to Output Jitter CLK>20 MHz, Note 2 200 ps Absolute Short-term Jitter, peak-to-peak Note 2 ±100 ps Input to Output Skew Note 1 Output Clock Rise Time 20% to 80%, Note 2 1.5 ns Output Clock Fall Time 80% to 20%, Note 2 1.5 ns Output Clock Duty Cycle At VDD/2, Note 2 -600 45 600 50 55 ps % Note 1: Assumes clocks with same rise time, measured from rising edges at VDD/2 Note 2: Measured with a 15 pF load. Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case MDS 2402 D Symbol Conditions Min. Typ. Max. Units θJA Still air 150 °C/W θJA 1 m/s air flow 140 °C/W θJA 3 m/s air flow 120 °C/W 40 °C/W θJC 5 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Body) Package dimensions are kept current with JEDEC Publication No. 95 8 E Symbol A A1 B C D E e H h L α H INDEX AREA 1 2 D Millimeters Inches Min Max 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 BASIC 5.80 6.20 0.25 0.50 0.40 1.27 0° 8° Min Max .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0° 8° A h x 45 A1 C - Ce SEATING PLANE B .10 (.004) L C Ordering Information Part / Order Number Marking Shipping Packaging Package Temperature ICS2402M ICS2402MT ICS2402MLF ICS2402MLFT ICS2402M ICS2402M 2402MLF 2402MLF Tubes Tape and Reel Tubes Tape and Reel 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 0 to +70° C 0 to +70° C 0 to +70° C 0 to +70° C “LF” denotes Pb (lead) free package. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (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. MDS 2402 D 6 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com ICS2402 Multiplier and Zero Delay Buffer Revision History Rev. Originator Date B P.Griffith 10/05/04 New device/datasheet for HP. C S. Gardner 11/04/04 Changed values for Abs. Jitter, Prop. Delay, and Output Clock Freq. in “Features” section; removed secondary Input High/Low and Output High (CMOS) voltage specs in DC chars; multiple updates to AC chars and added 5 V +/-10% rating; move from Preliminary to Release. D P.Griffith 12/21/04 Added LF packaging and ordering information. Released from custom to standard device. MDS 2402 D Description of Change 7 Revision 122104 Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com