ICS181-51
LOW EMI CLOCK GENERATOR SSCG
IDT™ / ICS™
LOW EMI CLOCK GENERATOR 5
ICS181-51 REV B 081009
AC Electrical Characteristics
Unless stated otherwise, VDD = 3.3 V±5% or 5 V±10%, Ambient Temperature 0 to +70° C, C
L
=15 pf
Note 1: Measured with 15pF load
Thermal Characteristics
Marking Diagram
Marking Diagram (Pb free)
Notes:
1. ###### is the lot number.
2. YYWW is the last two digits of the year and week that
the part was assembled.
3. “LF” denotes Pb (lead) free package.
4. Bottom Marking: country of origin.
Parameter Symbol Conditions Min. Typ. Max. Units
Input/Output Clock Frequency 28 75 MHz
Input Crystal Frequency 28 40 MHz
Input Clock Duty Cycle Time above VDD/2 40 60 %
Output Clock Duty Cycle Note 1 40 50 60 %
Output Rise Time t
OR
0.8 to 2.4 V, note 1 2 5 ns
Output Fall Time t
OF
2.4 to 0.8 V, note 1 2 5 ns
Jitter Cycle-to-cycle 250 300 ps
Parameter Symbol Conditions Min. Typ. Max. Units
Thermal Resistance Junction to
Ambient
θ
JA
Still air 150 ° C/W
θ
JA
1 m/s air flow 140 ° C/W
θ
JA
3 m/s air flow 120 ° C/W
Thermal Resistance Junction to Case θ
JC
40 ° C/W
181M-51
######
YYWW
14
58
181M51LF
######
YYWW
14
58
