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MC12013P Scheda tecnica(PDF) 13 Page - Motorola, Inc

Il numero della parte MC12013P
Spiegazioni elettronici  Dual Modulus Prescaler
PDF  15 Pages
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Produttore elettronici  MOTOROLA [Motorola, Inc]
Homepage  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC12013P Scheda tecnica(HTML) 13 Page - Motorola, Inc

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13
12
11
10
9
15
5
4
+
–
C
E5
E4
E3
E2
E1
Q4
Q4
2
3
7
MECL
to
MTTL
Trans–
lator
Figure 8. Divide By 10/11 (MC12013)
APPLICATIONS INFORMATION
The primary application of these devices is as a
high–speed variable modulus prescaler in the divide by N
section of a phase–locked loop synthesizer used as the
local oscillator of two–way radios.
Proper VHF termination techniques should be followed
when the clock is separated from the prescaler by any
appreciable distance.
In their basic form, these devices will divide by 5/6, 8/9,
or 10/11. Division by 5, 8, or 10 occurs when any one or all
of the five gate inputs E1 through E5 are high. Division by
6, 9, or 11 occurs when all inputs E1 through E5 are low.
(Unconnected MTTL inputs are normally high, uncon-
nected MECL inputs are normally low). With the addition
of extra parts, many different division configurations may
be obtained (20/21, 40/41, 50/51, 100/101, etc.) A few of
the many configurations are shown below, only for the
MC12013.
MC12009 MC12011 MC12013
13
MOTOROLA RF/IF DEVICE DATA
Q1
Q2
Q3
Q4
1
1
1
1
0
1
1
1
0
0
1
1
0
0
0
1
1
0
0
1
1
1
0
1
0
1
1
0
0
0
1
0
0
0
0
0
1
0
0
0
1
1
0
0



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