ICS8531AY-01LFT IDT, Integrated Device Technology Inc, ICS8531AY-01LFT Datasheet - Page 13

• Manufacturer Part Number: ICS8531AY-01LFT
• Description: IC FANOUT BUFFER 1-9 32-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Buffer (Distribution), Multiplexerr

Specifications of ICS8531AY-01LFT

• Number Of Circuits: 1
• Ratio - Input:output: 2:9
• Differential - Input:output: Yes/Yes
• Input: CML, HCSL, LVDS, LVHSTL, LVPECL, SSTL
• Output: LVPECL
• Frequency - Max: 500MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Frequency-max: 500MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 8531AY-01LFT

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)/50Ω] * 0.9V = 19.8mW
Pd_L = [(V
[(2V - 1.7V)/50Ω] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50Ω load, and a termination
ICS8531-01
LOW SKEW, 1-TO-9, DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
CCO_MAX
CCO_MAX
1-TO-9, 3.3V LVPECL FANOUT BUFFER
OH_MAX
CCO
- 2V.
– (V
– (V
- V
- V
CCO_MAX
OH_MAX
OL_MAX
CCO_MAX
) = 1.7V
) = 0.9V
OUT
- 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
6. LVPECL D
- V
– 1.7V
- V
– 0.9V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
RIVER
V
Q1
CCO
CCO_MAX
CCO_MAX
C
IRCUIT AND
13
- V
- V
OL_MAX
OH_MAX
)) /R
)) /R
T
R L
V
ERMINATION
50
L
CCO
] * (V
L
] * (V
V
- 2V
OUT
CCO_MAX
CCO_MAX
- V
- V
OL_MAX
OH_MAX
) =
) =
ICS8531AY-01 REV. F APRIL 11, 2007