IDT8535-01PG IDT [Integrated Device Technology], IDT8535-01PG Datasheet - Page 10

• Manufacturer Part Number: IDT8535-01PG
• Description: LOW SKEW, 1-TO-4 LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
• Manufacturer: IDT [Integrated Device Technology]

CALCULATIONS AND EQUATIONS
To calculate worst case power dissipation into the load, use the following equations, which assume a 50Ω load and a termination voltage of V
For Logic HIGH: V
(V
For Logic LOW: V
(V
Pd_H is power dissipation when the output drives HIGH.
Pd_L is power dissipation when the output drives LOW.
Pd_H = {[ V
1V = 20mW.
Pd_L = {[ V
1.7V = 10.2mW.
Total Power Dissipation per output pair = Pd_H + Pd_L = 30.2mW
IDT8535-01
LOW SKEW, 1-TO-4 LVCMOS-TO-3.3V LVPECL
DD
DD
_
_
MAX
MAX
– V
– V
OL
OH
OH
OL
_
_
MAX
_
MAX
_
MAX
MAX
OUT
OUT
– (V
– (V
) = 1.7V
) = 1V
= V
= V
DD
DD
OL
_
OH
_
MAX
_
MAX
_
MAX
MAX
– 2V)] / R
– 2V)] / R
= V
= V
DD
DD
_
_
MAX
L
MAX
L
} * (V
} * (V
– 1.7V.
– 1V.
DD
DD
_
_
LVPECL Output Driver Circuit and Termination
MAX
MAX
– V
– V
OL
OH
_
_
MAX
MAX
Q1
) = {[ 2V – (V
) = {[ 2V – (V
V
DD
10
DD
DD
_
_
MAX
MAX
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
– V
– V
OL
OH
_
_
MAX
MAX
RL
50
V
)] / R
)] / R
V
DD
OUT
L
} * (V
- 2V
L
} * (V
DD
DD
_
_
MAX
MAX
– V
– V
OL
OH
_
MAX
_
MAX
) = [( 2V – 1.7V) / 50Ω] *
) = [( 2V – 1V) / 50Ω] *
DD
– 2V.