85214AGI IDT, Integrated Device Technology Inc, 85214AGI Datasheet - Page 11

• Manufacturer Part Number: 85214AGI
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of 85214AGI

• Number Of Clock Inputs: 2
• Output Frequency: 700MHz
• Output Logic Level: HSTL
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Not Compliant

3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
HSTL output driver circuit and termination are shown in Figure 5.
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 = (1.0V/50 ) * (2V - 1.0V) = 20mW
Pd_L = (0.4V/50 ) * (2V - 0.4V) = 12.8mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 32.8mW
85214AGI
o calculate worst case power dissipation into the load, use the following equations which assume a 50 load.
OL_MAX
OH_MIN
/R
/R
L
L
) * (V
) * (V
DDO_MAX
DDO_MAX
- V
- V
OL_MAX
OH_MIN
F
IGURE
)
)
5. HSTL D
RIVER
www.idt.com
V
Q1
DDO
11
C
IRCUIT AND
D
IFFERENTIAL
T
ERMINATION
RL
50
V
OUT
-
TO
-HSTL F
L
OW
ICS85214I
ANOUT
S
KEW
REV. B JULY 25, 2010
, 1-
B
UFFER
TO
-5