W24L257A WINBOND [Winbond], W24L257A Datasheet - Page 8

• Manufacturer Part Number: W24L257A
• Description: 32K X 8 High Speed CMOS Static RAM
• Manufacturer: WINBOND [Winbond]

PACKAGE DIMENSIONS
28-pin P-DIP Skinny
28-pin Small Outline J Band
E
1
A
L
A
2
28
1
S
28
1
s
Seating Plane
b
b
1
B
B
1
D
D
e
e
1
14
15
A
A
E
2
1
15
14
y
H
A
A
E
1
Base Plane
Mounting Plane
L
£c
a
- 8 -
e
e
E
A
1
c
c
Notes:
Notes:
Symbol
1. Dimensions D Max. & S include mold flash
2. Dimension b does not include dambar
3. Dimensions D & E include mold mismatch
4. Controlling dimension: Inches.
5. General appearance spec. should be based
3. Dimensions D & E1 include mold mismatch and
1. Dimensions D Max. & S include mold flash or
2. Dimension E1 does not include interlead flash.
4. Dimension B1 does not include dambar
5. Controlling dimension: Inches.
6. General appearance spec. should be based on
Symbol
A
A
A
b
b
c
D
E
e
e
H
L
S
y
protrusion/intrusion.
and are determined at the mold parting line.
on final visual inspection spec.
or tie bar burrs.
are determined at the mold parting line.
tie bar burrs.
protrusion/intrusion.
final visual inspection spec.
A
A
A
B
B
c
D
E
E
e
L
e
a
1
2
1
1
E
S
1
1
2
1
1
A
0.027
0.095
0.026
0.016
0.008
0.295
0.044
0.245
0.327
0.077
Dimension in Inches
Min. Nom. Max.
0
0.010
0.125
0.016
0.058
0.008
0.300
0.283
0.090
0.120
0.330
Dimension in Inches
Min. Nom.
0°
0.100
0.028
0.018
0.010
0.710
0.300
0.050
0.265
0.337
0.087
0.130
0.018
0.060
0.010
1.388
0.288
0.100
0.130
0.350
0.310
0.105
0.032
0.022
0.285
0.347
0.097
0.045
0.140
0.014
0.730
0.305
0.056
0.004
10
W24L257A
0.135
0.022
0.293
0.110
0.140
0.175
0.064
0.014
1.400
0.320
0.370
0.055
Max.
15°
7.49
1.12
6.22
8.31
1.96
Min.
0.69
2.41
0.66
0.41
0.20
0
Dimension in mm
0.25
3.18
0.41
1.47
0.20
Min.
7.19
2.29
3.05
8.38
7.62
Dimension in mm
0°
Nom.
18.03
7.62
1.27
6.73
8.56
2.21
2.54
0.71
0.46
0.25
35.26
Nom.
3.30
0.46
1.52
0.25
7.32
2.54
3.30
8.89
7.87
18.54
3.56
Max.
1.14
0.10
2.67
0.81
0.56
7.75
1.42
7.24
8.81
2.46
0.36
10
4.45
35.56
Max.
3.43
0.56
1.63
0.36
8.13
7.44
2.79
3.56
9.40
1.40
15°