™
A C T
1 S e r i e s F P G A s
T im in g De r a t in g
“standard speed” timing parameters, and must be multiplied
by the appropriate voltage and temperature derating factors
for a given application.
A best case timing derating factor of 0.45 is used to reflect
best case processing. Note that this factor is relative to the
T i m i n g D e r a t i n g F a c t o r ( T e m p e r a t u r e a n d V o l t a g e )
Industrial
Military
Min.
Max.
Min.
Max.
(Commercial Minimum/Maximum Specification) x
0.69
1.11
0.67
1.23
T i m i n g D e r a t i n g F a c t o r f o r D e s i g n s a t T y p i c a l T e m p e r a t u r e ( T = 2 5 °C ) a n d
J
V o l t a g e ( 5 . 0 V )
(Commercial Maximum Specification) x
0.85
T e m p e r a t u r e a n d V o l t a g e D e r a t i n g F a c t o r s
( n o r m a l i z e d t o W o r s t -C a s e C o m m e r c i a l , T = 4 . 7 5 V , 7 0 °C )
J
–55
–40
0
25
70
85
125
4.50
4.75
5.00
5.25
5.50
0.75
0.71
0.69
0.68
0.67
0.79
0.75
0.72
0.69
0.69
0.86
0.82
0.80
0.77
0.76
0.92
0.87
0.85
0.82
0.81
1.06
1.00
0.97
0.95
0.93
1.11
1.05
1.02
0.98
0.97
1.23
1.16
1.13
1.09
1.08
Junction Temperature and Voltage Derating Curves
(normalized to Worst-Case Commercial,TJ = 4.75 V, 70°C)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
125°C
85°C
70°C
25°C
0°C
–40°C
–55°C
4.50
4.75
5.00
5.25
5.50
Voltage (V)
Note: This derating factor applies to all routing and propagation delays.
1 -2 9 3
ACTEL [ Actel Corporation ]
