-M  
        Nominal Frequency in MHz
        Nominal Power Supply Voltage
= +5.0V
V = +3.3V
W = +2.5V
X = +1.8V
        Output Symmetry
= Duty Cycle 40% to 60%
S = Duty Cycle 45% to 55%
        Temperature Range
= 0°C to 70°C
E = -40°C to 85°C
        Product Option
= Below 70MHz
D = 70MHz and above
        Frequency Stability
20 = ±20ppm over the temperature range
44 = ±25ppm over the temperature range
45 = ±50ppm over the temperature range
        Model
DIP/DIL Half Size
SQ22 = CMOS in half size DPI/DIL package pin 1 is N.C. (open)
SQ33 = CMOS in half size DPI/DIL package pin 1 is E/D
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