8533AG-01LF Integrated Device Technology (Idt), 8533AG-01LF Datasheet - Page 12

• Manufacturer Part Number: 8533AG-01LF
• Description: Clock Driver 2-IN LVPECL 20-Pin TSSOP Tube
• Manufacturer: Integrated Device Technology (Idt)

Specifications of 8533AG-01LF

• Package: 20TSSOP
• Configuration: 1 x 2:1
• Input Signal Type: CML|HCSL|LVDS|LVHSTL|LVPECL|SSTL
• Maximum Output Frequency: 650 MHz
• Operating Supply Voltage: 3.3 V

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 6.
T
voltage of V
Pd_H is power dissipation when the output drives high.
Pd_L is the power dissipation when the output drives low.
Pd_H = [(V
[(2V - 0.9V)/50 ] * 0.9V = 19.8mW
Pd_L = [(V
[(2V - 1.7V)/50 ] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
8533AG-01
o calculate worst case power dissipation into the load, use the following equations which assume a 50 load, and a termination
•
•
For logic high, V
(V
For logic low, V
(V
OL_MAX
OH_MAX
CC
CC_MAX
CC_MAX
- 2V.
– (V
– (V
- V
- V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
OUT
OUT
) = 1.7V
) = 0.9V
- 2V))/R
- 2V))/R
= V
= V
OL_MAX
OH_MAX
L
F
L
] * (V
] * (V
IGURE
= V
= V
CC_MAX
CC_MAX
CC_MAX
CC_MAX
6. LVPECL D
- V
– 1.7V
- V
– 0.9V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
D
www.idt.com
RIVER
V
IFFERENTIAL
Q1
CC
12
C
CC_MAX
CC_MAX
IRCUIT AND
- V
- V
OL_MAX
OH_MAX
-
TO
RL
T
V
50
ERMINATION
)) /R
CC
-3.3V LVPECL F
)) /R
- 2V
V
L
OUT
] * (V
L
] * (V
CC_MAX
CC_MAX
- V
- V
OL_MAX
OH_MAX
L
ICS8533-01
OW
) =
) =
ANOUT
S
KEW
REV. F AUGUST 4, 2010
, 1-
B
UFFER
TO
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