
87159AG
www.idt.com
REV. B JULY 25, 2010
ICS87159
1-TO-8 LVPECL-TO-HCSL
÷1, ÷2, ÷4 CLOCK GENERATOR
13
RELIABILITY INFORMATION
TRANSISTOR COUNT
The transistor count for ICS87159 is: 2631
TABLE 6.
θ
JA
VS
. AIR FLOW TABLE FOR 56 LEAD TSSOP
θθθθθ
JA by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
80.2°C/W
68.5°C/W
62.5°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
58.2°C/W
52.4°C/W
50°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.