CRYSTAL SELECTION GUIDELINES FOR THE DS2188
PARAMETER
SPECIFICATION
Parallel resonant frequency
6.176 MHz (T1) or 8.192 MHz (CEPT)
Mode
Fundamental
Load capacitance
14 to 20 pF (16 pF preferred)
Tolerance
±50 ppm over 0 to 70°C
Pullability
CL = 10 pF, delta_f = +175 to +250 ppm
CL = 45 pF, delta_f = -175 to -250 ppm
Effective series resistance
40 ohms maximum for 6.176 MHz
30 ohms maximum for 8.192 MHz
Crystal cut
AT
DS2188
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