m87c257-15xf7x STMicroelectronics, m87c257-15xf7x Datasheet - Page 18

• Manufacturer Part Number: m87c257-15xf7x
• Description: Address Latched 256k 32k X 8 Uv Eprom And Otp Eprom
• Manufacturer: STMicroelectronics

Package mechanical
5
18/22
Package mechanical
Figure 9.
1. Drawing is not to scale.
Table 12.
Symbol
A1
A2
A3
B1
D2
E1
eA
eB
Ø
A
B
C
D
E
S
N
e
L
FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, package outline
FDIP28WB - 28 pin Ceramic Frit-seal DIP, with window (round 0.280"),
package mechanical data
33.02
15.24
14.99
1.45
2.54
7.11
Typ
A2
B1
N
1
millimeters
S
36.50
13.06
16.18
0.51
3.91
3.89
0.41
0.23
3.18
1.52
Min
28
4°
–
–
–
–
–
–
D2
D
B
A1
e
37.34
13.36
18.03
A3
E1
Max
5.72
1.40
4.57
4.50
0.56
0.30
4.10
2.49
11°
–
–
–
–
–
–
A
L
E
0.057
1.300
0.600
0.100
0.590
0.280
Typ
eA
eB
FDIPW-a
C
inches
0.020
0.154
0.153
0.016
0.009
1.437
0.514
0.637
0.125
0.060
Min
28
4°
–
–
–
–
–
–
M87C257
0.225
0.055
0.180
0.177
0.022
0.012
1.470
0.526
0.710
0.161
0.098
Max
11°
–
–
–
–
–
–