Both the ICS525-01 and ICS525-02 meet your requirements.

ICS525-01 frequency calculator results

Results for:
desired input frequency = 20 MHz
desired output frequency = 4.915254 MHz
desired output frequency accuracy = 100 ppm
Vdd= 5V
operating temperature = 0 to 70 deg C

Solutions for the ICS525-01:
 Out freq error ppm VCO divider ref divider VDW RDW OD duty cycle spec best accuracy 4.915254 0.0 29 59 21 57 4 45 - 55% lowest jitter 4.915254 0.0 58 59 50 57 8 45 - 55% lowest Idd 4.915254 0.0 29 59 21 57 4 45 - 55%

Set the input pins on the ICS525-01 according to this table:
 S2 S1 S0 R6 R5 R4 R3 R2 R1 R0 V8 V7 V6 V5 V4 V3 V2 V1 V0 Out freq error ppm pin 5 4 3 2 1 28 27 26 25 24 18 17 16 15 14 13 12 11 10 best accuracy 4.915254 0.0 0 1 1 0 1 1 1 0 0 1 0 0 0 0 1 0 1 0 1 lowest jitter 4.915254 0.0 0 1 0 0 1 1 1 0 0 1 0 0 0 1 1 0 0 1 0 lowest Idd 4.915254 0.0 0 1 1 0 1 1 1 0 0 1 0 0 0 0 1 0 1 0 1

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ICS525-02 frequency calculator results

Results for:
desired input frequency = 20 MHz
desired output frequency = 4.915254 MHz
desired output frequency accuracy = 100 ppm
Vdd= 5V
operating temperature = 0 to 70 deg C

Solutions for the ICS525-02:
 Out freq error ppm VCO divider ref divider VDW RDW OD duty cycle spec best accuracy 4.915254 0.0 29 59 21 57 4 45 - 55% lowest jitter 4.915254 0.0 58 59 50 57 8 45 - 55% lowest Idd 4.915254 0.0 29 59 21 57 4 45 - 55%

Set the input pins on the ICS525-02 according to this table:
 S2 S1 S0 R6 R5 R4 R3 R2 R1 R0 V8 V7 V6 V5 V4 V3 V2 V1 V0 Out freq error ppm pin 5 4 3 2 1 28 27 26 25 24 18 17 16 15 14 13 12 11 10 best accuracy 4.915254 0.0 0 1 1 0 1 1 1 0 0 1 0 0 0 0 1 0 1 0 1 lowest jitter 4.915254 0.0 0 1 0 0 1 1 1 0 0 1 0 0 0 1 1 0 0 1 0 lowest Idd 4.915254 0.0 0 1 1 0 1 1 1 0 0 1 0 0 0 0 1 0 1 0 1

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[Clear Input Form]

Choosing Between the ICS525-01 and ICS525-02
The differences between the ICS525-01 and -02 are primarily cost and performance. The -01 is the lower cost part ; the -02 the higher performance.
The ICS525-02 will operate to higher frequencies and typically has one third lower jitter than the -01 at 3.3V.
If this calculator produces acceptable solutions for both the -01 and -02, then the choice is based on price/performance. Where low cost is critical, use the -01 and where lower jitter is required, use the -02.