74HC4516 查看數據表（PDF） - Philips Electronics
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74HC4516 Datasheet PDF : 14 Pages
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Philips Semiconductors
Binary up/down counter
Product specification
74HC/HCT4516
Use the following formulae to calculate
Ntotal:
i
Ntotal =
π
( 16
×
Ni)
+
N0
1
fout = fin/Ntotal
Fig.14 State diagram.
Fig.15 Programmable cascaded frequency divider.
parallel inputs
D3
D2
D1 D0
0
0
00
0
0
01
0
0
10
0
0
11
0
1
00
0
1
01
0
1
10
0
1
11
1
0
00
1
0
01
1
0
10
1
0
11
1
1
00
1
1
01
1
1
10
1
1
11
count-up count-down
n
n
15
(1)
14
1
13
2
12
3
11
4
10
5
9
6
8
7
7
8
6
9
5
10
4
11
3
12
2
13
1
14
(1)
15
Note
1. no count; fout is HIGH.
PACKAGE OUTLINES
See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.
December 1990
14
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