
IDT / ICS HSTL FREQUENCY SYNTHESIZER
11
ICS8421002I REV B MARCH 02, 2009
ICS8421002I
FEMTOCLOCKS CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER
RELIABILITY INFORMATION
TRANSISTOR COUNT
The transistor count for ICS8421002I is: 2951
TABLE 7.
θ
JA
VS
. AIR FLOW TABLE FOR 20 LEAD TSSOP
θθθθθ
JA
by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
114.5°C/W
98.0°C/W
88.0°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
73.2°C/W
66.6°C/W
63.5°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.