ICS8633AF-01LF IDT, Integrated Device Technology Inc, ICS8633AF-01LF Datasheet - Page 11

• Manufacturer Part Number: ICS8633AF-01LF
• Description: IC BUFFER ZD 1-3 LVPECL 28-SSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Distribution, Multiplexer , Zero Delay Bufferr

Specifications of ICS8633AF-01LF

• Pll: Yes with Bypass
• Input: HCSL, LVDS, LVHSTL, LVPECL, SSTL
• Output: LVPECL
• Number Of Circuits: 1
• Ratio - Input:output: 2:3
• Differential - Input:output: Yes/Yes
• Frequency - Max: 700MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Frequency-max: 700MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 8633AF-01LF

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 = 19.2mW
Pd_L = [(V
[(2V - 1.7V)/50 ] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
8633AF-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
CCO
CCO_MAX
CCO_MAX
- 2V.
– (V
– (V
- V
- V
CCO_MAX
CCO_MAX
OH_MAX
OL_MAX
OUT
OUT
) = 1.7V
) = 0.9V
- 2V))/R
= V
- 2V))/R
= V
OL_MAX
OH_MAX
F
L
L
] * (V
IGURE
= V
] * (V
= V
CCO_MAX
CCO_MAX
CCO_MAX
CCO_MAX
6. LVPECL D
– 1.7V
- V
– 0.9V
- V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
www.idt.com
RIVER
V
Q1
CCO
11
C
IRCUIT AND
CCO_MAX
CCO_MAX
1-
TO
- V
- V
-3 D
OL_MAX
T
OH_MAX
R L
V
50
ERMINATION
CCO
)) /R
V
- 2V
IFFERENTIAL
)) /R
OUT
L
] * (V
L
] * (V
CCO_MAX
CCO_MAX
Z
- V
-
- V
ERO
TO
ICS8633-01
OL_MAX
OH_MAX
-3.3V LVPECL
D
) =
) =
ELAY
REV. B AUGUST 2, 2010
B
UFFER