參數(shù)資料
型號(hào): W24257AS-20
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): SRAM
英文描述: 32K X 8 High Speed CMOS Static RAM
中文描述: 32K X 8 STANDARD SRAM, 20 ns, PDSO28
封裝: 0.330 INCH, SOP-28
文件頁(yè)數(shù): 9/11頁(yè)
文件大?。?/td> 226K
代理商: W24257AS-20
W24257A
Publication Release Date: May 1997
- 9 -
Revision A14
PACKAGE DIMENSIONS
28-pin P-DIP Skinny
1. Dimensions D Max. & S include mold flash or
2. Dimension E1 does not include interlead flash.
3. Dimensions D & E1 include mold mismatch and
4. Dimension B1 does not include dambar
5. Controlling dimension: Inches.
6. General appearance spec. should be based on
1.63
1.47
0.064
0.058
Notes:
Symbol
Min. Nom. Max.
Max.
Nom.
Min.
Dimension in Inches
Dimension in mm
A
A
A
B
B
1
c
D
E
E
1
e
L
a
A
S
1
2
0.060
1.52
0.175
4.45
0.010
0.125
0.016
0.130
0.018
0.135
0.022
3.18
0.41
0.25
3.30
0.46
3.43
0.56
0.008
0.120
0.370
0.010
0.130
0.014
0.140
0.20
3.05
0.25
3.30
0.36
3.56
0.293
0.288
0.283
7.44
7.32
7.19
9.40
7.87
7.62
8.13
0.310
0.300
0.320
2.29
2.54
2.79
0.090
0.100
0.110
1
e
1.388
1.400
35.26
35.56
0
°
15
°
0.055
1.40
0.350
0.330
8.38
8.89
15
°
0
°
e
A
A
a
c
E
Base Plane
Mounting Plane
1
A
1
e
L
A
S
1
E
D
1
B
B
28
15
1
14
2
28-pin Small Outline J Band
1
y
1
e
s
1
b
b
c
L
e
Seating Plane
1
2
A
A
A
D
E
H
E
14
15
28
£c
0.36
0.20
0.014
0.008
Symbol
Min. Nom. Max.
Max.
Nom.
Min.
Dimension in Inches
Dimension in mm
A
A
A
b
1
b
c
D
E
e
e
H
E
L
S
y
1
1
2
0.010
0.25
0.140
3.56
0.027
0.095
0.016
0.100
0.018
0.105
0.022
2.41
0.41
0.69
2.54
0.46
2.67
0.56
0.077
0.004
0
10
0.710
0.087
0.730
0.097
1.96
18.03
2.21
18.54
2.46
0.285
0.265
0.245
7.24
6.73
6.22
0
0.10
7.75
7.62
7.49
0.305
0.300
0.295
8.31
8.56
8.81
0.327
0.337
0.347
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
Notes:
0.81
0.71
0.66
0.032
0.028
0.026
0.044
0.050
0.056
1.12
1.27
1.42
0.045
1.14
10
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