853011BM IDT, Integrated Device Technology Inc, 853011BM Datasheet - Page 12

• Manufacturer Part Number: 853011BM
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 853011BM

• Number Of Outputs: 4
• Operating Supply Voltage (max): -3.8/3.8V
• Operating Temp Range: -40C to 85C
• Propagation Delay Time: 0.415ns
• Operating Supply Voltage (min): -2.375/2.375V
• Mounting: Surface Mount
• Pin Count: 8
• Operating Supply Voltage (typ): -2.5/-3.3/3.3V
• Package Type: SOIC
• Duty Cycle: 52%
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Not Compliant

IDT™ / ICS™ LOW SKEW, 1-TO-2 DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER
ICS853011
LOW SKEW, 1-TO-2 DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER
853011BM
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 5.
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 - 0.935V)/50 ] * 0.935V = 19.92mW
Pd_L = [(V
[(2V - 1.67V)/50 ] * 1.67V = 11.02mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30.94mW
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
CC_MAX
CC_MAX
CC
- 2V.
Integrated
Circuit
Systems, Inc.
– (V
– (V
- V
- V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
OUT
OUT
) = 1.67V
) = 0.935V
- 2V))/R
- 2V))/R
= V
= V
OL_MAX
OH_MAX
L
F
L
] * (V
] * (V
IGURE
= V
= V
D
CC_MAX
CC_MAX
CC_MAX
IFFERENTIAL
CC_MAX
5. LVPECL D
www.icst.com/products/hiperclocks.html
– 1.67V
- V
- V
–0.935V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
-
TO
Q1
VCC
RIVER
-2.5V/3.3V LVPECL/ECL F
12
12
C
CC_MAX
CC_MAX
IRCUIT AND
- V
- V
OL_MAX
OH_MAX
RL
50
T
VCC - 2V
ERMINATION
)) /R
)) /R
L
VOUT
] * (V
L
] * (V
CC_MAX
CC_MAX
- V
- V
OL_MAX
OH_MAX
L
OW
) =
) =
ANOUT
S
REV. C NOVEMBER 2, 2005
KEW
, 1-
B
UFFER
TO
ICS853011
-2
TSD