DP83848T_07 Datasheet, PDF (34/78 Pages) National Semiconductor (TI) – Industrial Temperature Single 10/100 Ethernet Transceiver

Parameter
Frequency
Frequency
Tolerance
Frequency
Stability
Rise / Fall Time
Jitter
Jitter
Symmetry
Table 8. 50 MHz Oscillator Specification
Min
Typ
Max
50
+50
Units
MHz
ppm
+50
ppm
40%
6
800¹
800¹
60%
nsec
psec
psec
Condition
Operational Tem-
perature
1 year aging
20% - 80%
Short term
Long term
Duty Cycle
1. This limit is provided as a guideline for component selection and not guaranteed by production testing. Refer to
AN-1548, “PHYTER 100 Base-TX Reference Clock Jitter Tolerance,” for details on jitter performance.
Parameter
Frequency
Frequency
Tolerance
Frequency
Stability
Load Capacitance
Table 9. 25 MHz Crystal Specification
Min
Typ
Max
25
+50
+50
25
40
Units
MHz
ppm
ppm
pF
Condition
Operational Tem-
perature
1 year aging
www.national.com
34