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X28HC256
Plastic Leaded Chip Carrier Packages (PLCC)
0.042 (1.07)
0.048 (1.22)
PIN (1)
IDENTIFIER
CL
0 .042   (1.07 )
0.056 (1.42)
0.050 (1.27) T P
ND
0.004 (0.10)
0 .025   (0.64 )
0.045 (1.14)
C
R
N32.45x55 (JEDEC MS-016AE ISSUE A)
32 LEAD PLASTIC LEADED CHIP CARRIER PACKAGE
INCHES MILLIMETERS
SYMBOL
A
MIN
0.125
MAX
0.140
MIN
3.18
MAX
3.55
NOTES
-
D2/E2
A1
D
0.060
0.485
0.095
0.495
1.53
12.32
2.41
12.57
-
-
NE
E1 E
CL
D2/E2
VIEW “A”
D1
D2
E
E1
E2
0.447
0.188
0.585
0.547
0.238
0.453
0.223
0.595
0.553
0.273
11.36
4.78
14.86
13.90
6.05
11.50
5.66
15.11
14.04
6.93
3
4, 5
-
3
4, 5
-C- PLANE
0.020 (0.51) MAX
3 PLCS
D1
D
0.050 (1.27)
MIN
A1
A
0.026 (0.66)
0.032 (0.81)
0.015 (0.38)
MIN
SEATING
N 28 28 6
ND 7 7 7
NE 9 9 7
Rev. 0 7/98
NOTES:
1. Controlling dimension: INCH. Converted millimeter dimen-
sions are not necessarily exact.
2. Dimensions and tolerancing per ANSI Y14.5M-1982.
3. Dimensions D1 and E1 do not include mold protrusions. Al-
M A S -B S D S
0.025 (0.64)
MIN
0.013 (0.33)
0.021 (0.53)
(0.12)
0.005
VIEW “A” TYP.
15
lowable mold protrusion is 0.010 inch (0.25mm) per side.
Dimensions D1 and E1 include mold mismatch and are mea-
sured at the extreme material condition at the body parting
line.
4. To be measured at seating plane -C- contact point.
5. Centerline to be determined where center leads exit plastic
body.
6. “N” is the number of terminal positions.
7. ND denotes the number of leads on the two shorts sides of the
package, one of which contains pin #1. NE denotes the num-
ber of leads on the two long sides of the package.
FN8108.3
September 21, 2011
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