Integrated

Circuit

Systems, Inc.

ICS8521

8521BY

www.icst.com/products/hiperclocks.html

REV. B JULY 31, 2001

11

The transistor count for ICS8521 is: 944

θ

JA

VS

q

0

200

500

Single-Layer PCB, JEDEC Standard Test Boards

67.8°C/W

55.9°C/W

50.1°C/W

Multi-Layer PCB, JEDEC Standard Test Boards

47.9°C/W

42.1°C/W

39.4°C/W

NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.