TS68C429AMFA E2V, TS68C429AMFA Datasheet - Page 9

• Manufacturer Part Number: TS68C429AMFA
• Manufacturer: E2V

Specifications of TS68C429AMFA

• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -55C to 125C
• Operating Temperature Classification: Military
• Mounting: Surface Mount
• Pin Count: 132
• Lead Free Status / Rohs Status: Compliant

5.3.1
e2v semiconductors SAS 2008
Power Considerations
Figure 5-1.
Note:
Table 5-3.
The average chip-junction temperature, T
T
P
P
P
For most applications P
An approximate relationship between P
Solving equations (1) and (2) for K gives:
where K is a constant pertaining to the particular part K can be determined from equation (3) by measur-
ing P
solving equations (1) and (2) iteratively for any value of T
The total thermal resistance of a package (
resenting the barrier to heat flow from the semiconductor junction to the package (case), surface (
and from the case to the outside ambient (
A
JA
D
INT
I/O
CQFP 132
= Ambient Temperature,
= P
Package
= Package Thermal Resistance, Junction-to-Ambient,
PGA 68
T
P
K = P
= Power Dissipation on Input and Output Pins–User Determined
= I
D
J
D
INT
= T
(at equilibrium) for a known T
CC
= K: (T
Timing measurements are referenced to and from a low of 0.8-volt and a high voltage of 2.25 volts, unless
otherwise noted. The voltage swing through this range should start outside and pass through the range
such that the rise or fall will be linear between
0.8-volt and 2.25 volts.
D
+ P
A
x V
+ (P
(T
I/O
CC
J
A
Clock Input Timing Diagram
Thermal Characteristics
t
CR
D
, Watts–Chip Internal Power
+ 273)
+ 273) +
0.8V
2.25V
JA
Symbol
)
J-A
J-C
J-A
J-C
I/O
< P
JA
°
C
INT
P
D
2
and can be neglected.
Parameter
Thermal Resistance Junction-to-ambient
Thermal Resistance Junction-to-case
Thermal Resistance Junction-to-ambient
Thermal Resistance Junction-to-case
A
. Using this value of K, the values of P
D
and T
J
, in
CA
JA
) can be separated into two components,
).
°
C can be obtained from:
J
(if P
t
CF
t
CL
I/O
(1)
(2)
(3)
is neglected) is:
A
°
.
C/W
t
cyc
t
CH
D
and T
0848E–HIREL–02/08
J
TS68C429A
can be obtained by
Value
28
27
2
3
JC
and
°C/W
°C/W
°C/W
°C/W
CA
Unit
, rep-
JC
9
)