ICS840-77 Datasheet, PDF (7/9 Pages) Integrated Circuit Systems – 77.76MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS840-77
77.76MHZ, LVCMOS/LVTTL
OSCILLATOR REPLACEMENT
RELIABILITY INFORMATION
TABLE 7A. θ_JAVS. AIR FLOW TABLE FOR 8 LEAD TSSOP
θ_JA by Velocity (Meters per Second)
Multi-Layer PCB, JEDEC Standard Test Boards
0
101.7°C/W
1
90.5°C/W
2.5
89.8°C/W
TABLE 7B. θ_JAVS. AIR FLOW TABLE 8 LEAD SOIC
θ_JA by Velocity (Linear Feet per Minute)
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
0
153.3°C/W
112.7°C/W
200
128.5°C/W
103.3°C/W
500
115.5°C/W
97.1°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
TRANSISTOR COUNT
The transistor count for ICS840-77 is: 2423
840AG-77
www.icst.com/products/hiperclocks.html
7
REV. A NOVEMBER 7, 2005