參數(shù)資料
型號(hào): UPD4991A
廠商: NEC Corp.
英文描述: 4-BIT PARALLEL I/O CALENDAR CLOCK
中文描述: 4位并行I / O日歷鐘
文件頁(yè)數(shù): 28/32頁(yè)
文件大小: 133K
代理商: UPD4991A
μ
PD4991A
28
18PIN PLASTIC DIP (300 mil)
ITEM MILLIMETERS
A
22.86 MAX.
B
1.27 MAX.
C
2.54 (T.P.)
INCHES
0.900 MAX.
0.050 MAX.
0.100 (T.P.)
0.020
–0.005
NOTES
1) Each lead centerline is located within 0.25 mm (0.01 inch) of
its true position (T.P.) at maximum material condition.
P18C-100-300A,C-1
N
P
R
0.25
1.0 MIN.
0~15
°
0.01
0.039 MIN.
0~15
°
F
G
H
I
1.2 MIN.
3.5±0.3
0.51 MIN.
4.31 MAX.
0.047 MIN.
0.138±0.012
0.020 MIN.
0.170 MAX.
J
K
L
5.08 MAX.
7.62 (T.P.)
6.4
0.200 MAX.
0.300 (T.P.)
0.252
0.010
D
0.50
+0.004
M
0.25
+0.004
2) ltem "K" to center of leads when formed parallel.
M
R
M
P
I
H
G
F
D
N
C
B
1
9
18
10
A
L
K
J
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