85105AGILF IDT, 85105AGILF Datasheet - Page 13

• Manufacturer Part Number: 85105AGILF
• Description: Clock Drivers & Distribution
• Manufacturer: IDT

Specifications of 85105AGILF

• Product Category: Clock Drivers & Distribution
• Rohs: yes
• Part # Aliases: ICS85105AGILF

ICS85105I Data Sheet
3. Calculations and Equations.
The purpose of this section is to calculate power dissipation on the IC per HCSL output pair.
HCSL output driver circuit and termination are shown in Figure 5.
HCSL is a current steering output which sources a maximum of 17mA of current per output. To calculate worst case on-chip power
dissipation, use the following equations which assume a 50
The highest power dissipation occurs when V
Power
Total Power Dissipation per output pair = 47.3mW
ICS85105AGI REVISION A MAY 27, 2011
= (V
= (V
= (3.63V – 17mA * 50 ) * 17mA
DD_HIGH
DD_HIGH
– V
– I
OUT
OUT
* R
) * I
L
) * I
OUT,
since V
OUT
R
475
REF =
± 1%
OUT
F
= I
IGURE
OUT
DD
* R
is HIGH.
5. HCSL D
L
I
OUT = 17mA
IC
RIVER
V
load to ground.
DD
13
LOW SKEW, 1-TO-5, DIFFERENTIAL/LVCMOS-TO-0.7V HCSL FANOUT BUFFER
C
IRCUIT AND
T
ERMINATION
R
50
L
V
OUT
2011 Integrated Device Technology, Inc.