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| MK2304-2 ZERO DELAY, LOW SKEW BUFFER Description The MK2304-2 is a low jitter, low skew, high performance Phase Lock Loop (PLL) based zero delay buffer for high speed applications. Based on ICS' proprietary low jitter PLL techniques, the device provides four low skew outputs at speeds up to 133 MHz at 3.3 V. The MK2304-2 includes a bank of two outputs running at 1/2X. In the zero delay mode, the rising edge of the input clock is aligned with the rising edges of all 4 outputs. Compared to competitive CMOS devices, the MK2304-2 has the lowest jitter. The MK2304-2 PLL enters a power-down state when there are no rising edges on the REF input. In this mode, all outputs are tri-stated and the PLL is turned off, resulting in leass than 25 A of current draw. ICS manufactures the largest variety of clock generators and buffers and is the largest clock supplier in the world. Features * * * * * * * Packaged in 8 pin SOIC Zero input-output delay Two 1X outputs plus two 1/2X outputs Output to output skew is less than 200 ps Output clocks up from 10 MHz to 133 MHz at 3.3 V Ability to generate 2X the input Full CMOS outputs with 18 mA output drive capability at TTL levels at 3.3 V spectrum clock generators * Spread SmartTM technology works with spread * * * * * Advanced, low power, sub micron CMOS process Operating voltage of 3.3 V Available in industial temperature operation Available in Pb (lead) free package Low Standby Current Block Diagram VDD 1 FBIN CLKIN PLL CLKA1 CLKA2 BANK A CLKB1 /2 CLKB2 BANK B 1 GND MDS 2304-2 C I n t e gra te d C i r c u i t S y s t e m s 1 525 Race Stre et, San Jo se, CA 9 5126 Revision 050306 te l (40 8) 2 97-12 01 w w w. i c st . c o m MK2304-2 ZERO DELAY, LOW SKEW BUFFER Pin Assignment Feedback Configuration Table Feedback From Bank A Bank B CLKA1:A2 CLKIN 2XCLKIN CLKB1:B2 CLKIN/2 CLKIN REF CLKA1 CLKA2 GND 1 2 3 4 8 7 6 5 FBK VDD CLKB2 CLKB1 8 Pi n ( 150 mi l ) SOI C Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 Pin Name REF CLKA1 CLKA2 GND CLKB1 CLKB1 VDD FBK Pin Type Input Output Output Power Output Output Power Input Pin Description Clock input. Connect to input clock source, 5 V tolerant input. Clock A1 output. Clock A2 output. Connect to ground. Clock B1 output. Clock B2 output. 3.3V Power Supply. PLL feedback input External Components The Mk2304-2 requires a minimum number of external components for proper operation. Decoupling capacitors of 0.1F should be connected between VDD and GND, as close to the part as possible. A 33 series terminating resistor should be used on each clock output to reduce reflections. MDS 2304-2 C In te grated Circuit Systems 2 525 Ra ce Street, San Jose, CA 9512 6 Revision 050306 tel (4 08) 297-1 201 w w w. i c s t . c o m MK2304-2 ZERO DELAY, LOW SKEW BUFFER Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the MK2304-2. 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 Supply Voltage, VDD All Inputs and Outputs Ambient Operating Temperature (commercial) Ambient Operating Temperature (industrial) Storage Temperature Junction Temperature Soldering Temperature 7V Rating -0.5 V to VDD+0.5 V 0 to +70 C -40 to +85 C -65 to +150 C 125 C 260 C Recommended Operation Conditions Parameter Ambient Operating Temperature (commercial) Ambient Operating Temperature (industrial) Power Supply Voltage (measured in respect to GND) Min. 0 -40 +3.0 Typ. Max. +70 +85 +3.6 Units C C V DC Electrical Characteristics VDD=3.3 V 10%, Amb temp -40 C to 85 C Parameter Operating Voltage Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage Operating Supply Current 100 MHz, CLKIN Stand by Supply Current 0 MHz, CLKIN Short Circuit Current Input Capacitance Power-up Time Symbol VDD VIH VIL VOH VOL IDD IDD IOS CIN Conditions Min. 3.0 2 Typ. Max. 3.6 0.8 Units V V V V V mA IOH = -8 mA IOL = 8 mA No Load No Load Each output FBIN 2.4 0.4 45 12 TBD 7 50 25 uA mA pF ms MDS 2304-2 C In te grated Circuit Systems 3 525 Ra ce Street, San Jose, CA 9512 6 Revision 050306 tel (4 08) 297-1 201 w w w. i c s t . c o m MK2304-2 ZERO DELAY, LOW SKEW BUFFER AC Electrical Characteristics VDD = 3.3V 10%, Ambient Temperature -40 C to 85 C Parameter Output Frequency Output Frequency Output Rise Time Output Rise Time Output Fall Time Output Fall Time Output Clock Duty Cycle Output Clock Duty Cycle Device-to-Device skew, equally loaded Output-to-Output skew, equally loaded, On same bank Skew from Output Bank A to Output Bank B Delay CLKIN Rising Edge to FBIN Rising Edge Cycle-to-Cycle Jitter tOR tOR tOF tOF Symbol Conditions FBIN to CLKA1, 30 pF Load FBIN to CLKA1, 15 pf Load 0.8 to 2.0 V, CL=30 pF 0.8 to 2.0 V, CL=15 pF 0.8 to 2.0 V, CL=30 pF 0.8 to 2.0 V, CL=15 pF At 1.4 V, CL=30 pf At 1.4 V, CL=15 pf Rising edges at VDD/2 Rising edges at VDD/2 All outputs equally loaded Measured at VDD/2 30 pF loads 66.67 MHz outputs 15 pF loads 66.67 MHz outputs Min. 10 10 Typ. Max. Units 100 133 2.2 1.5 2.2 1.5 MHz MHz ns ns ns ns % % ps ps ps ps ps ps ms 40 45 50 50 60 65 500 200 400 250 400 375 1 PLL Lock Time tLOCK Stable power supply, valid clocks on CLKIN, FBIN Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Symbol JA JA JA JC Conditions Still air 1 m/s air flow 3 m/s air flow Min. Typ. 120 115 105 58 Max. Units C/W C/W C/W C/W Thermal Resistance Junction to Case MDS 2304-2 C In te grated Circuit Systems 4 525 Ra ce Street, San Jose, CA 9512 6 Revision 050306 tel (4 08) 297-1 201 w w w. i c s t . c o m MK2304-2 ZERO DELAY, LOW SKEW BUFFER Package Outline and Package Dimensions (8-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 8 Millimeters Symbol Min Max Inches* Min Max E INDEX AREA H 12 D A A1 B C D E e H h L 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 .0532 .0688 .0040 .0098 .013 .020 .0075 .0098 .1890 .1968 .1497 .1574 0.050 BASIC .2284 .2440 .010 .020 .016 .050 0 8 *For reference only. Controlling dimensions are in mm. A A1 h x 45 C -Ce B SEATING PLANE L .10 (.004) C Ordering Information Part / Order Number MK2304S-2 MK2304S-2T MK2304S-2I MK2304S-2IT MK2304S-2LF MK2304S-2LFT MK2304S-2ILF MK2304S-2ILFT Marking 2304S-02 2304S-02 2304S02I 2304S02I 2304S02L 2304S02L 2304S2IL 2304S2IL Shipping Packaging Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Tubes Tape and Reel Package 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC 8-pin SOIC Temperature 0 to 70 C 0 to 70 C -40 C to 85 C -40 C to 85 C 0 to 70 C 0 to 70 C -40 C to 85 C -40 C to 85 C Parts that are ordered with a "LF" 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 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 2304-2 C In te grated Circuit Systems 5 525 Ra ce Street, San Jose, CA 9512 6 Revision 050306 tel (4 08) 297-1 201 w w w. i c s t . c o m |
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