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TMS320 SECOND-GENERATION
DEVICES
SPRS010B — MAY 1987 — REVISED NOVEMBER 1990
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77001
55
MECHANICAL DATA
68-pin GB grid array ceramic package (TMS32020, TMS320C25)
ALL LINEAR DIMENSIONS ARE IN MILLIMETERS AND PARENTHETICALLY IN INCHES
28,448 (1.120)
27,432 (1.080)
4,953 (0.195)
2,032 (0.080)
3,302 (0.130)
2,794 (0.110)
0,508 (0.020)
0,406 (0.016)
1,575 (0.062)
1,473 (0.058)
Dia
2,54
(0.100)
T.P.
2,54
(0.100)
T.P.
1,524 (0.060)
Nom
4 Places
1,27
(0.050)
Nom
1,397 (0.055)
Max
17,02
(0.670)
Nom
17,02 (0.670)
Nom
28,448 (1.120)
27,432 (1.080)
R
θJA
Junction-to-free-air
thermal resistance
36 °C/W
R
θJC
Junction-to-case
thermal resistance
6 °C/W
PARAMETER MAX UNIT
Thermal Resistance Characteristics
L
K
J
H
G
F
E
D
C
B
A
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