486pga_temp4 Comparision
Ceramic Packages Only
AMD486DE2, DX2, DX4 & DX5
in PGA Packages
AMD486DE2, DX2, DX4 & DX5
in PGA Packages
with Heat Sink
without Heat Sink
100.0
80.0
60.0
40.0
20.0
0.0
100.0
80.0
84.8
76.9
DE2
DE2
77.1
69.8
DX2 (Commercial)
DX2 (Industrial)
DX2 (Commercial)
DX2 (Industrial)
DX4 (Commercial)
DX4 (Industrial)
DX5 (Commercial)
65.4
63.2
61.9
62.1
54.3
52.3
60.0
40.0
20.0
0.0
50.4
38.9
DX4 (Commercial)
DX4 (Industrial)
DX5 (Commercial)
Max. Ambient Temp. at 3.3V
Max. Ambient Temp. at 3.3V
Equations:
Tj = Tcase + P * ThetaJC
TA = Tj - P * ThetaJA
Tcase = TA + P * (ThetaJA - ThetaJC)
TA = Tcase - P * (ThetaJA - ThetaJC)
Enhanced Am486DX Data Sheet Specifications
168 Pin Ceramic PGA without Heat Spreader
168 Pin Ceramic PGA with Heat Sink
AMD
Voltage Icc Spec. Frequency Total Icc
Power
Case Temp.
Theta JC
Junction
Theta JA
Ambient
Theta JC
Junction
Theta JA
Ambient
Am486
(3.0-3.6V) (mA/MHz)
(MHz)
(mA)
(Watts)
(degrees C) (deg. C/Watt) Temp.(C) (deg. C/Watt)
Temp.(C)
(deg. C/Watt) Temp.(C) (deg. C/Watt) Temp.(C)
DE2
Typ.
3.3
3.3
3.6
8.0
10.0
10.0
66
66
66
528.0
660.0
660.0
1.74
2.18
2.38
85
85
85
1.5
1.5
1.5
87.6
88.3
88.6
16.5
16.5
16.5
58.9
52.3
49.4
2.0
2.0
2.0
88.5
89.4
89.8
12.0
12.0
12.0
67.6
63.2
61.2
Commercial Max.
Max.
DX2
Industrial
Typ.
Max.
Max.
3.3
3.3
3.6
6.2
7.0
7.0
66
66
66
409.2
462.0
462.0
1.35
1.52
1.66
100
100
100
1.5
1.5
1.5
102.0
102.3
102.5
16.5
16.5
16.5
79.7
77.1
75.1
2.0
2.0
2.0
102.7
103.0
103.3
12.0
12.0
12.0
86.5
84.8
83.4
DX2
Typ.
3.3
3.3
3.6
6.2
7.0
7.0
66
66
66
409.2
462.0
462.0
1.35
1.52
1.66
85
85
85
1.5
1.5
1.5
87.0
87.3
87.5
16.5
16.5
16.5
64.7
62.1
60.1
2.0
2.0
2.0
87.7
88.0
88.3
12.0
12.0
12.0
71.5
69.8
68.4
Commercial Max.
Max.
DX4
Industrial
Typ.
Max.
Max.
3.3
3.3
3.6
6.2
7.0
7.0
100
100
100
620.0
700.0
700.0
2.05
2.31
2.52
100
100
100
1.5
1.5
1.5
103.1
103.5
103.8
16.5
16.5
16.5
69.3
65.4
62.2
2.0
2.0
2.0
104.1
104.6
105.0
12.0
12.0
12.0
79.5
76.9
74.8
DX4
Typ.
3.3
3.3
3.6
6.2
7.0
7.0
100
100
100
620.0
700.0
700.0
2.05
2.31
2.52
85
85
85
1.5
1.5
1.5
88.1
88.5
88.8
16.5
16.5
16.5
54.3
50.4
47.2
2.0
2.0
2.0
89.1
89.6
90.0
12.0
12.0
12.0
64.5
61.9
59.8
Commercial Max.
Max.
DX5
Industrial
Typ.
Max.
Max.
3.3
3.3
3.6
6.2
7.0
7.0
133
133
133
824.6
931.0
931.0
2.72
3.07
3.35
100
100
100
DX5 is Not Supported in Industrial Temp,,
168 PGA package
DX5 is Not Supported in Industrial Temp,,
168 PGA package
DX5
Typ.
3.3
3.3
3.6
6.2
7.0
7.0
133
133
133
824.6
931.0
931.0
2.72
3.07
3.35
85
85
85
1.5
1.5
1.5
89.1
89.6
90.0
16.5
16.5
16.5
44.2
38.9
34.7
2.0
2.0
2.0
90.4
91.1
91.7
12.0
12.0
12.0
57.8
54.3
51.5
Commercial Max.
Max.
Table #1
Page 1