W24257AJ-8N Datasheet, PDF (7/8 Pages) Winbond – 32K X 8 High Speed CMOS Static RAM

W24257AJ-8N
ORDERING INFORMATION
PART NO.
ACCESS
TIME
(nS)
W24257AJ-8N
8
OPERATING
CURRENT
MAX. (mA)
180
STANDBY
CURRENT
MAX. (mA)
10
PACKAGE
300 mil SOJ
Notes:
1. Winbond reserves the right to make changes to its products without prior notice.
2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in
applications where personal injury might occur as a consequence of product failure.
PACKAGE DIMENSIONS
28-pin Small Outline J Band
28
15
E HE
1
14
D
s
b
b1
e
Seating Plane
c
A2 _A
L
£c
A1
e1
y
Dimension in Inches Dimension in mm
Symbol _{Min. Nom. Max. Min. Nom. Max.}
A
0.140
3.56
A¹
0.027
0.69
A2
0.095 0.100 0.105 2.41 2.54 2.67
b1
0.026 0.028 0.032 0.66 0.71 0.81
b
0.016 0.018 0.022 0.41 0.46 0.56
c
0.008 0.010 0.014 0.20 0.25 0.36
D
0.710 0.730
18.03 18.54
E
0.295 0.300 0.305 7.49 7.62 7.75
e
0.044 0.050 0.056 1.12 1.27 1.42
e1
0.245 0.265 0.285 6.22 6.73 7.24
HE
0.327 0.337 0.347 8.31 8.56 8.81
L
0.077 0.087 0.097 1.96 2.21 2.46
S
0.045
1.14
y
0.004
0.10
θ
0
10
0
10
Notes:
1. Dimensions D Max. & S include mold flash
or tie bar burrs.
2. Dimension b does not include dambar
protrusion/intrusion.
3. Dimensions D & E include mold mismatch
and are determined at the mold parting line.
4. Controlling dimension: Inches.
5. General appearance spec. should be based
on final visual inspection spec.
Publication Release Date: February 1998
-7-
Revision A2