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| PRELIMINARY INFORMATION I C R O C LOC K Description The ICS615 is a low cost, low jitter, high performance PLL clock synthesizer designed to replace 13.5, 27, and 54MHz crystals and oscillators. Using analog/digital Phase-Locked Loop (PLL) techniques, the device uses an inexpensive external 13.5 MHz crystal or clock input to produce output clocks of 13.5 MHz, 27 MHz, and 54 MHz . ICS/MicroClock manufactures the largest variety of Set-Top Box and multimedia clock synthesizers for all applications. Our patented integrated VCXO further reduces component count and cost (see the MK2720). If more than three clock outputs are needed, see the MK277x family of parts. Consult ICS/MicroClock to eliminate VCXOs, PLLs, crystals and oscillators from your board. ICS615 Set-Top Box Clock Source Features * Packaged in 8 pin narrow SOIC * Output clocks of 54, 27, and 13.5MHz * Uses a 13.500 MHz clock or external crystal * Full CMOS outputs with 25mA output drive capability at TTL levels * Low skew outputs * Advanced, low power, sub-micron CMOS process * +3.3V or +5V operating voltage * See the MK2720 for these frequencies plus the VCXO function, in an 8 pin SOIC. Block Diagram VDD GND Output Buffer 13.5 MHz Clock or Crystal X1 54 MHz Clock 27 MHz Clock 13.5 MHz Clock X2 Input Buffer/ Crystal Oscillator PLL/Clock Synthesis Circuitry Output Buffer Output Buffer MDS 615 A 1 Revision 052098 Printed 11/15/00 Integrated Circuit Systems, Inc.*525 Race Street*San Jose*CA*95126*(408)295-9800tel*www.icst.com PRELIMINARY INFORMATION I C R O C LOC K Pin Assignment ICS615 Set-Top Box Clock Source ICS615 27M GND X1 X2 1 2 3 4 8 7 6 5 NC VDD 13.5M 54M 8 pin (150 mil) SOIC Pin Descriptions Number 1 2 3 4 5 6 7 8 Name 27M GND X1 X2 54M 13.5M VDD NC Description 27 MHz clock output. Connect to ground. Crystal connection. Connect to a13.5 MHz clock or crystal. Crystal connection. Connect to a 13.5 MHz crystal. Leave unconnected for clock input. 54 MHz clock output. 13.5 MHz clock output. VDD. Connect to +3.3V or +5V. No Connect. This is an unused power down pin for 27 MHz clock MDS 615 A 2 Revision 052098 Printed 11/15/00 Integrated Circuit Systems, Inc.*525 Race Street*San Jose*CA*95126*(408)295-9800tel*www.icst.com PRELIMINARY INFORMATION I C R O C LOC K Electrical Specifications Parameter Supply voltage, VDD Inputs and Clock Outputs Ambient Operating Temperature Soldering Temperature Storage temperature Operating Voltage, VDD Output High Voltage, VOH Output Low Voltage, VOL Output High Voltage, VOH, CMOS level Operating Supply Current, IDD Short Circuit Current Input Clock Output Clock Rise Time Output Clock Fall Time Output Clock Duty Cycle Skew between any two outputs Maximum Absolute Jitter, short term Note: Conditions Referenced to GND Referenced to GND Max of 10 seconds ICS615 Set-Top Box Clock Source Minimum Typical Maximum 7 VDD+0.5 70 260 150 5.50 0.4 Units V V C C C V V V V mA mA MHz ns ns % ns ps ABSOLUTE MAXIMUM RATINGS (note 1) -0.5 0 -65 3.00 2.4 VDD-0.4 30 30 13.5 1.5 1.5 50 250 DC CHARACTERISTICS (VDD = 5.0V unless noted) IOH=-4mA IOL=4mA IOH=-4mA No Load AC CHARACTERISTICS (VDD = 5.0V unless noted) 0.4 to 2.4V, CL=25pF 2.4 to 0.4V, CL=25pF At 1.4V 2.5 2.5 55 1 45 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 The ICS615 requires a minimum number of external components for proper operation. A decoupling capacitor of 0.1F should be connected between VDD and GND on pins 7 and 2, as close to the ICS615 as possible. A series termination resistor of 33 may be used for the clock outputs. The normal use is with a clock input into pin 3, with pin 4 left unconnected. For a crystal input, consult ICS/MicroClock. MDS 615 A 3 Revision 052098 Printed 11/15/00 Integrated Circuit Systems, Inc.*525 Race Street*San Jose*CA*95126*(408)295-9800tel*www.icst.com PRELIMINARY INFORMATION I C R O C LOC K Package Outline and Package Dimensions 8 pin SOIC ICS615 Set-Top Box Clock Source E Pin 1 H D Q e b c h x 45 A Symbol A b D E H e h Q Inches Min Max 0.055 0.068 0.013 0.019 0.185 0.200 0.150 0.160 0.225 0.245 .050 BSC 0.015 0.004 0.01 Millimeters Min Max 1.397 1.7272 0.330 0.483 4.699 5.080 3.810 4.064 5.715 6.223 1.27 BSC 0.381 0.102 0.254 Ordering Information Part/Order Number ICS615M ICS615MT Marking ICS615M ICS615M Shipping packaging tubes tape and reel Package 8 pin SOIC 8 pin SOIC Temperature 0-70C 0-70C CHANGE HISTORY Version Date first published A 5/20/98 Status Preliminary Comments Original While the information presented herein has been checked for both accuracy and reliability, ICS/MicroClock 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/MicroClock. ICS/MicroClock reserves the right to change any circuitry or specifications without notice. ICS/MicroClock does not authorize or warrant any ICS/MicroClock product for use in life support devices or critical medical instruments. MDS 615 A 4 Revision 052098 Printed 11/15/00 Integrated Circuit Systems, Inc.*525 Race Street*San Jose*CA*95126*(408)295-9800tel*www.icst.com |
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