ICS853052AGT IDT, Integrated Device Technology Inc, ICS853052AGT Datasheet - Page 10

• Manufacturer Part Number: ICS853052AGT
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Multiplexerr

Specifications of ICS853052AGT

• Number Of Clock Inputs: 2
• Mode Of Operation: Single-Ended
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Operating Supply Voltage (max): 5.5V
• Package Type: TSSOP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: LVCMOS/LVTTL
• Mounting: Surface Mount
• Pin Count: 8
• Lead Free Status / RoHS Status: Not Compliant

3. Calculations and Equations.
LVPECL output driver circuit and termination are shown in Figure 4.
T
termination voltage of V
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
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50
ICS853052
DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V, 3.3V, 5V LVPECL MULTIPLEXER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
2.5V, 3.3V, 5V LVPECL MULTIPLEXER
CC_MAX
CC_MAX
OH_MAX
– (V
– (V
- V
- V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
) = 1.67V
) = 0.935V
- 2V))/R
CC
OUT
- 2V))/R
OUT
- 2V.
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
] * (V
= V
= V
Figure 4. LVPECL Driver Circuit and Termination
CC_MAX
CC_MAX
CC_MAX
CC_MAX
- V
- V
– 1.67V
– 0.935V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
CC _MAX
CC _MAX
Q1
VCC
- V
10
- V
OL_MAX
OH_MAX
)) /R
)) /R
L
] * (V
L
] * (V
RL
50
CC_MAX
CC _MAX
VCC - 2V
- V
VOUT
- V
OL_MAX
OH_MAX
) =
) =
ICS853052AG REV. B JANUARY 16, 2008
load, and a
PRELIMINARY