
IDT / ICS LVCMOS/LVTTL FREQUENCY SYNTHESIZER
10
ICS840245AGI REV. B NOVEMBER 16, 2006
ICS840245I
FEMTOCLOCKS 1:5, CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER
RELIABILITY INFORMATION
TRANSISTOR COUNT
The transistor count for ICS840245I is: 1965
TABLE 7.
θ
JA
VS
. AIR FLOW TABLE FOR 16 LEAD TSSOP
θθθθθ
JA
by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
137.1°C/W
118.2°C/W
106.8°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
89.0°C/W
81.8°C/W
78.1°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.