mpc961p Integrated Device Technology, mpc961p Datasheet - Page 8

• Manufacturer Part Number: mpc961p
• Description: Lvpecl-input Lvcmos-ouput 200-mhz Low Voltage Clock Zero Delay Buffer
• Manufacturer: Integrated Device Technology

IDT™ Low Voltage Zero Delay Buffer
Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc
MPC961P
Low Voltage Zero Delay Buffer
(junction to ambient) and T
According to
junction temperature can be used to estimate the long-term
device reliability. Further, combining equation 1 and equation 2
results in a maximum operating frequency for the MPC961P in
a series terminated transmission line system.
Table 10. Thermal Package Impedance of the 32ld LQFP
FREESCALE SEMICONDUCTOR ADVANCED CLOCK DRIVERS DEVICE DATA
Where R
Figure 9. Maximum MPC961P Frequency, V
200
180
160
140
120
100
80
60
40
20
Convection, LFPM
0
500
MTBF 9.1 Years, Driving Series Terminated
thja
100 lfpm
200 lfpm
300 lfpm
400 lfpm
500 lfpm
Table 9.Die Junction Temperature and
Still air
is the thermal impedance of the package
400
Transmission Lines
Safe operation
Figure 11. TCLK MPC961P AC Test Reference for V
I
A
FPM
Generator
Z = 50 Ω
300
is the ambient temperature.
Pulse
, CONVECTION
f
MAX
R
(AC)
thja
200
(1P2S board), K/W
T
A
= 85°C
80
70
61
57
56
55
Z
100
CC
O
MTBF, the
= 50 Ω
R
= 3.3 V,
T
= 50 Ω
V
0
TT
MPC961P DUT
8
requirements and
R
Impedance of the 32ld
on 1S2P boards, using 2S2P boards will result in a lower
thermal impedance than indicated below.
becomes the upper clock speed limit for the given application
conditions. The following two derating charts describe the safe
frequency operation range for the MPC961P. The charts were
calculated for a maximum tolerable die junction temperature of
110°C, corresponding to an estimated MTBF of 9.1 years, a
supply voltage of 3.3 V and series terminated transmission line
or capacitive loading. Depending on a given set of these
operating conditions and the available device convection a
decision on the maximum operating frequency can be made.
There are no operating frequency limitations if a 2.5 V power
supply or the system specifications allow for a MTBF of 4 years
(corresponding to a max. junction temperature of 120°C.
thja
T
If the calculated maximum frequency is below 200 MHz, it
J,MAX
200
180
160
140
120
100
can be derived from
80
60
40
20
0
V
500
CC
Figure 10. Maximum MPC961P Frequency,
should be selected according to the MTBF system
CC
= 3.3 V, MTBF 9.1 Years, 4 pF Load per Line
= 3.3 V and V
Z
O
Table 9.Die Junction Temperature and
400
= 50 Ω
Safe operation
LQFP. The R
R
T
Table 10.Thermal Package
I
= 50 Ω
FPM
CC
300
f
, CONVECTION
MAX
= 2.5 V
V
(AC)
TT
thja
T
A
200
= 85°C
represent data based
T
A
= 75°C
MPC961P
100
NETCOM
MTBF.
MPC961P
499
0