MPC9448AC Integrated Device Technology (Idt), MPC9448AC Datasheet - Page 8

• Manufacturer Part Number: MPC9448AC
• Description: Clock Driver 2-IN LVCMOS 32-Pin TQFP Tray
• Manufacturer: Integrated Device Technology (Idt)

Specifications of MPC9448AC

• Package: 32TQFP
• Configuration: 1 x 2:1
• Input Signal Type: LVCMOS/LVPECL
• Maximum Output Frequency: 350 MHz
• Maximum Quiescent Current: 2 mA
• Operating Supply Voltage: 2.5|3.3 V

IDT™ / ICS™ LVCMOS 1:12 CLOCK FANOUT BUFFER
MPC9448
3.3V/2.5V LVCMOS 1:12 CLOCK FANOUT BUFFER
requirements, and
Figure
Using 2S2P boards will result in a lower thermal impedance
than indicated below.
Table 10. Thermal Package Impedance of the 32ld LQFP
Figure 7. Maximum MPC9448 Frequency, V
Convection, LFPM
T
J,MAX
Figure 9. No maximum Frequency Limitation for
Terminated Transmission Lines, 2s2p Board
100 lfpm
200 lfpm
300 lfpm
400 lfpm
500 lfpm
10. The R
MTBF 9.1 Years, Driving Series Terminated
Still air
V
CC
should be selected according to the MTBF system
= 3.3 V, MTBF 4 Years, Driving Series
transmission lines, 2s2p board
thja
Figure 9
represent data based on 1S2P boards.
R
thja
(1P2S board),
R
°C/W
thja
86
76
71
68
66
60
can be derived from
R
thja
(2P2S board),
CC
°C/W
61
56
54
53
52
49
= 3.3 V,
8
becomes the upper clock speed limit for the given application
conditions. The following eight derating charts describe the
safe frequency operation range for the MPC9448. The charts
were calculated for a maximum tolerable die junction
temperature of 110°C (120°C), corresponding to an
estimated MTBF of 9.1 years (4 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.
Figure 10. Maximum MPC9448 Frequency, V
Figure 8. Maximum MPC9448 frequency, V
If the calculated maximum frequency is below 350 MHz, it
MTBF 9.1 Years, 4 pF Load per Line, 2s2p Board
MTBF 4 Years, 4 pF Load per Line, 2s2p Board
MPC9448
REV 6 JULY 11, 2006
CC
CC
= 3.3 V,
= 3.3 V,