Preliminary W78E378/W78C378/W78C374
PACKAGE DIMENSIONS
32-pin P-DIP
Dimension in inches
Dimension in mm
Symbol
A
Nom.
Nom.
Min.
Max. Min.
0.210
Max.
5.33
0.010
0.25
A
A
B
1
0.150 0.155 0.160 3.81
3.94
0.46
1.27
0.25
4.06
0.56
1.37
0.36
2
0.016 0.018
0.41
1.22
0.20
0.022
0.054
0.050
0.048
0.008
B1
c
D
E
0.010 0.014
1.650 1.660
D
17
32
41.91 42.16
15.49
14.10
2.79
0.590 0.600 0.610 14.99 15.24
13.84
2.29
3.05
0
13.97
2.54
3.30
0.545 0.550 0.555
E
1
0.110
0.140
15
0.090 0.100
0.120 0.130
0
e
L
a
1
E1
3.56
15
0.630 0.650 0.670 16.00 16.51 17.02
0.085
eA
S
2.16
16
1
Notes:
E
S
1. Dimensions D Max. & S include mold flash or
tie bar burrs.
c
2. Dimension E1 does not include interlead flash.
3. Dimensions D & E1 include mold mismatch and
are determined at the mold parting line.
4. Dimension B1 does not include dambar
protrusion/intrusion.
2
A
A
L
A1
Base Plane
Seating Plane
5. Controlling dimension: Inches
B
e1
eA
a
6. General appearance spec. should be based on
B1
final visual inspection spec.
40-pin DIP
Dimension in inch
Dimension in mm
Symbol
A
Min. Nom. Max. Min. Nom. Max.
5.334
0.210
0.010
0.150 0.155 0.160
0.254
3.81
1
A
3.937 4.064
A
B
2
0.016 0.018
0.406 0.457 0.559
0.022
0.054
0.050
1.219 1.27
1.372
0.356
0.048
0.008
1
B
c
0.203
0.010 0.014
2.055 2.070
0.254
52.20
15.24
D
52.58
D
E
E
e
L
a
40
21
15.494
0.610
0.590 0.600
14.986
13.72
0.540
13.84 13.97
2.54 2.794
0.545
0.550
0.110
1
1
0.090 0.100
2.286
3.048
0
0.120 0.130 0.140
3.302 3.556
15
1
E
0
15
0.630
0.670 16.00
0.090
17.01
2.286
0.650
16.51
e
S
A
20
1
Notes:
E
1. Dimension D Max. & S include mold flash or
tie bar burrs.
S
c
2. Dimension E1 does not include interlead flash.
3. Dimension D & E1 include mold mismatch and
are determined at the mold parting line.
4. Dimension B1 does not include dambar
protrusion/intrusion.
5. Controlling dimension: Inches.
A2
A
L
Base Plane
1
A
.
Seating Plane
B
e1
eA
a
B 1
6. General appearance spec. should be based on
final visual inspection spec.
Publication Release Date: December 1999
Revision A1
- 37 -
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