DB1065 Datasheet, PDF (19/23 Pages) CML Microcircuits – CTCSS Encoder / Decoder Development Kit

8.2 External Components Comparison
Figure 6: Comparison of External Components for Older CTCSS ICs
EXTERNAL
COMPONENTS
MX365
MX365A
MX165A
MX165B
MX165C
MX465
R1
1M
1M
1M
1M
4.7M
4.7M
R2
560k
560k
560k
560k
560k
560k
R3
820k
820k
820k
820k
820k
820k
X1
1MHz
1MHz
1MHz
1MHz
1MHz
4MHz
C1
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C2
68pF
68pF
68pF
68pF
18pF
18pF
C3
33pF
33pF
33pF
33pF
33pF
33pF
C4
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C5
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C6
0.47uF
0.47uF
0.47uF
0.47uF
0.47uF
0.47uF
C7
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C8
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C9
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C10
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C11
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
D1
Small signal Small signal Small signal Small signal Small signal Small signal
Resistors 10%, Capacitors 20%, Xtal 100ppm max
Note : The values specified for R1, C2 and C3 have been found to be satisfactory when used with a
crystal (X1) whose equivalent series resistance is to 1000 ohms. The crystal manufacturer should be
consulted to determine optimum values for different crystals.
20480150.001 MX-COM
1996
Page 19