ICS853111BY IDT, Integrated Device Technology Inc, ICS853111BY Datasheet - Page 15

• Manufacturer Part Number: ICS853111BY
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of ICS853111BY

• Lead Free Status / RoHS Status: Not Compliant

3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
LVPECL output driver circuit and termination are shown in Figure 7.
T
voltage of V
Pd_H = [(V
[(2V - 0.935V)/50Ω] * 0.935V = 19.92mW
Pd_L = [(V
[(2V – 1.67V)/50Ω] * 1.67V = 11.02mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30.94mW
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50Ω load, and a termination
ICS853111B
LOW SKEW, 1-TO-10, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
1-TO-10, LVPECL/ECL FANOUT BUFFER
CC_MAX
CCO_MAX
OH_MAX
CCO
– 2V.
– (V
– (V
– V
– V
OH_MAX
CCO_MAX
CCO_MAX
OL_MAX
) = 0.935V
OUT
) = 1.67V
– 2V))/R
OUT
– 2V))/R
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
] * (V
= V
F
= V
IGURE
CCO_MAX
CCO_MAX
CCO_MAX
CCO_MAX
7. LVPECL D
– 1.67V
– V
– V
– 0.935V
OL_MAX
OH_MAX
) = [(2V – (V
) = [(2V – (V
RIVER
V
Q1
CCO
C
CCO _MAX
CCO _MAX
IRCUIT AND
15
– V
– V
OL_MAX
OH_MAX
T
R L
)) /R
V
ERMINATION
50
)) /R
CCO
L
V
- 2V
] * (V
L
] * (V
OUT
CCO_MAX
CCO _MAX
– V
– V
OL_MAX
ICS853111BY REV. C JANUARY 13, 2009
OH_MAX
) =
) =