ICS8535AG-01T IDT, Integrated Device Technology Inc, ICS8535AG-01T Datasheet - Page 11

• Manufacturer Part Number: ICS8535AG-01T
• Description: IC FANOUT BUFFER 1-4 20-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Buffer (Distribution), Multiplexerr

Specifications of ICS8535AG-01T

• Number Of Circuits: 1
• Ratio - Input:output: 2:4
• Differential - Input:output: No/Yes
• Input: LVCMOS, LVTTL
• Output: LVPECL
• Frequency - Max: 266MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Frequency-max: 266MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 8535AG-01T

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 4.
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
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50
ICS8535-01
LOW SKEW, 1-to-4 LVCMOS/LVTTL-TO-3.3V LVPECL FANOUT BUFFER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
CC_MAX
CC_MAX
3.3V LVPECL FANOUT BUFFER
OH_MAX
CC
- 2V.
– (V
– (V
- V
- V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
) = 1.7V
) = 0.9V
- 2V))/R
OUT
- 2V))/R
OUT
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
] * (V
= V
= V
CC_MAX
CC_MAX
CC_MAX
F
CC_MAX
IGURE
- V
- V
– 1.7V
OL_MAX
– 0.9V
OH_MAX
4. LVPECL D
) = [(2V - (V
) = [(2V - (V
CC_MAX
CC_MAX
RIVER
V
Q1
CC
- V
11
- V
OL_MAX
C
OH_MAX
IRCUIT AND
)) /R
)) /R
L
] * (V
L
] * (V
T
RL
CC_MAX
V
50
CC_MAX
ERMINATION
CC
- 2V
- V
V
- V
OUT
OL_MAX
OH_MAX
) =
) =
ICS8535AG-01 REV. F APRIL 12, 2007
load, and a termination