REVISION C 2/18/15

87993I DATA SHEET

13

1-TO-5 DIFFERENTIAL-TO-3.3V LVPECL

PLL CLOCK DRIVER W/DYNAMIC CLOCK SWITCH

RELIABILITY INFORMATION

TRANSISTOR COUNT

The transistor count for 87993I is: 2745

TABLE 6.

θ

JA

VS

. AIR FLOW TABLE FOR 32 LEAD LQFP

θJA by Velocity (Linear Feet per Minute)

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.