 |
 |
|
| SM7645HEW |
|
|||||||||||||||||
 PLETRONICS
|
| |||||||||||||||||
|
2 page 
SM76H Series 2.5 V CMOS Clock Oscillators March 2008 www.pletronics.com 425-776-1880 2 Part Number: SM76 45 H E W - 50.0M -XX Part Marking: Packaging code or blank T250 = 250 per Tape and Reel T500 = 500 per Tape and Reel T1K = 1000 per Tape and Reel PLE SM76 FF.FFF M C YMDXX or PLE SM77 FF.FFF M C YMDXX Frequency in MHz Supply Voltage V CC W = 2.5V + _ 10% Optional Enhanced OTR Blank = Temp. range -10 to +70oC E = Temp. range -40 to +85oC Series Model Frequency Stability 45 = + _ 50 ppm 44 = + _ 25 ppm 20 = + _ 20 ppm Series Model Marking Legend: PLE = Pletronics FF.FFF M = Frequency in MHZ YMD = Date of Manufacture (year-month-day) All other marking is internal factory codes Specifications such as frequency stability, supply voltage and operating temperature range, etc. are not identified from the marking. External packaging labels and packing list will correctly identify the ordered Pletronics part number. Codes for Date Code YMD Code 6 7 8 9 0 1 2 Year 2006 2007 2008 2009 2010 2011 2012 Code A B C D E F G H J K L M Month JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Code 123456789 A B C Day 123456789 10 11 12 Code D E F G H J K L M N P R Day 13 14 15 16 17 18 19 20 21 22 23 24 Code T U V W X Y Z Day 25 26 27 28 29 30 31 Legacy Part Numbers: ‘S’ Denoted Symmetry of 45%/55% at 50% of V CC. This is now the standard Duty Cycle and is no longer needed in the part number. We will still support part numbers with the ‘S’. For example SM7645HW and SM7645HSW describe the same specifications and can be used interchangeably by the customer. -30 Denoted Output Load other than the standard 15 pF. Data sheets now reflect the specifications at all available loads so this load designation is no longer needed. We will still support part numbers with this load designation. |
