4
ClockWorks™
SY89421V
Micrel
FREQUENCY SELECTION TABLE
FOUT HFOUT
S4 S3 S2 S1 N Freq. Range MHz Freq. Range MHz
00002240 – 560 480 – 1120
00014120 – 280 480 – 1120
00108 60 – 140 480 – 1120
001116 30 – 70 480 – 1120
01001480 – 1120 480 – 1120
01011048 – 112 480 – 1120
01101240 – 93.3 480 – 1120
011120 20 – 56 480 – 1120
10002HFIN divide by 4 HFIN divide by 2
10014HFIN divide by 8 HFIN divide by 2
10108HFIN divide by 16 HFIN divide by 2
101116HFIN divide by 32 HFIN divide by 2
11001HFIN divide by 2 HFIN divide by 2
110110HFIN divide by 20 HFIN divide by 2
111012HFIN divide by 24 HFIN divide by 2
111120HFIN divide by 40 HFIN divide by 2
Maximum Feedback
S5 Divide-by-P Frequency (MHz)
0 P = 1 560
1 P = 2 1120
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol Parameter Value Unit
VCC Power Supply Voltage –0.5 to +7.0 V
VI TTL Input Voltage
(2)
–0.5 to 6.0 V
II TTL Input Current
(2)
–30 to +5.0 mA
I
OUT ECL Output Current mA
— Continuous 50
— Surge 100
Tstore Storage Temperature –65 to +150 °C
T
A Operating Temperature Range
(3)
0 to +85 °C
NOTES:
1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATING conditions
for extended periods may affect device reliability.
2. Either voltage limit or current limit is sufficient to protect input.
3. All DC and AC electrical characteristics are specified over the operating termperature range.
