ICS8624BYLF IDT, Integrated Device Technology Inc, ICS8624BYLF Datasheet - Page 14

• Manufacturer Part Number: ICS8624BYLF
• Description: IC BUFFER ZD 1-5 HSTL 32-LQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Distribution, Multiplexer , Zero Delay Bufferr

Specifications of ICS8624BYLF

• Pll: Yes with Bypass
• Input: HCSL, LVDS, LVHSTL, LVPECL, SSTL
• Output: HSTL
• Number Of Circuits: 1
• Ratio - Input:output: 2:5
• 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: 32-LQFP
• Frequency-max: 700MHz
• Number Of Elements: 1
• Supply Current: 120mA
• Pll Input Freq (min): 31.25MHz
• Pll Input Freq (max): 700MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Package Type: LQFP
• Output Frequency Range: Up to 700MHz
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.465V
• Operating Temperature Classification: Commercial
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 8624BYLF

ICS8624 Data Sheet
3. Calculations and Equations.
The purpose of this section is to calculate the power dissipation for the HSTL output pairs.
HSTL output driver circuit and termination are shown in Figure 5.
Figure 5. HSTL Driver Circuit and Termination
T
Pd_H is power dissipation when the output drives high.
Pd_L is the power dissipation when the output drives low.
Pd_H = (V
Pd_L = (V
Pd_H = (1V/50Ω) * (2V – 1V) = 20mW
Pd_L = (0.4V/50Ω) * (2V – 0.4V) = 12.8mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 32.8mW
ICS8624BY REVISION E OCTOBER 6, 2009
o calculate worst case power dissipation into the load, use the following equations which assume a 50Ω load.
OL_MAX
OH_MAX
/R
/R
L
) * (V
L
) * (V
DDO_MAX
DDO_MAX
V
Q1
DDO
– V
– V
OL_MAX
OH_MAX
)
)
RL
50Ω
V
OUT
14
LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-HSTL ZERO DELAY BUFFER
©2009 Integrated Device Technology, Inc.