ics8536ag-02 Integrated Device Technology, ics8536ag-02 Datasheet - Page 11

• Manufacturer Part Number: ics8536ag-02
• Description: Xtal, Xtal, Differential Input Lvpecl Output 1 6 266-mhz Buffer
• Manufacturer: Integrated Device Technology

8536AG-02
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
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_MAX
CCO_MAX
CC
- 2V.
Integrated
Circuit
Systems, Inc.
– (V
– (V
- V
- V
CC_MAX
OH_MAX
OL_MAX
CC_MAX
OUT
OUT
) = 1.7V
- 2V))/R
) = 0.9V
- 2V))/R
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
] * (V
F
= V
= V
IGURE
CC_MAX
CC_MAX
CC_MAX
CC_MAX
www.icst.com/products/hiperclocks.html
PRELIMINARY
4. LVPECL D
– 1.7V
- V
- V
– 0.9V
L
OL_MAX
OH_MAX
OW
) = [(2V - (V
) = [(2V - (V
S
KEW
RIVER
V
Q1
CC
11
, 1-
C
CC _MAX
-
CC _MAX
IRCUIT AND
TO
TO
-3.3V, 2.5V LVPECL F
- V
-6, D
- V
OL_MAX
OH_MAX
T
RL
ERMINATION
V
50
)) /R
UAL
CC
)) /R
- 2V
V
L
] * (V
L
OUT
] * (V
C
RYSTAL OR
CC_MAX
CC_MAX
- V
- V
OL_MAX
OH_MAX
ICS8536-02
) =
LVCMOS I
) =
ANOUT
REV. A AUGUST 24, 2005
B
UFFER
NPUT