Datasheet

DP83849IF
SNOSAX8D –JUNE 2009–REVISED APRIL 2013 www.ti.com
Table 8-1. 25 MHz Oscillator Specification
Parameter Min Typ Max Units Condition
Frequency 25 MHz
Frequency Tolerance ±50 ppm Operational Temperature
Frequency Stability ±50 ppm 1 year aging
Rise / Fall Time 6 nsec 20% - 80%
Jitter 800
(1)
psec Short term
Jitter 800
(1)
psec Long term
Symmetry 40% 60% Duty Cycle
(1) This limit is provided as a guide for component selection and not ensured by production testing. Refer to SNLA091, “PHYTER 100
Base-TX Reference Clock Jitter Tolerance, “ for details on jetter performance.
Table 8-2. 50 MHz Oscillator Specification
Parameter Min Typ Max Units Condition
Frequency 50 MHz
Frequency Tolerance ±50 ppm Operational Temperature
Frequency Stability ±50 ppm Operational Temperature
Rise / Fall Time 6 nsec 20% - 80%
Jitter 800
(1)
psec Short term
Jitter 800
(1)
psec Long term
Symmetry 40% 60% Duty Cycle
(1) This limit is provided as a guide for component selection and not ensured by production testing. Refer to SNLA091, “PHYTER 100
Base-TX Reference Clock Jitter Tolerance, “ for details on jetter performance.
Table 8-3. 25 MHz Crystal Specification
Parameter Min Typ Max Units Condition
Frequency 25 MHz
Frequency Tolerance ±50 ppm Operational Temperature
Frequency Stability ±50 ppm 1 year aging
Load Capacitance 25 40 pF
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