Model 365
Low Cost HF VCXO
CTS Reeves
FREQUENCY PRODUCTS
Features:
• Frequency Range 2 to 160 MHz
• Low Cost
• PLL Technology above 30 MHz
• HCMOS/TTL Compatible
• 14 Pin DIP Compatible Package
• Standard Frequencies
• Stabilities to ±25 ppm
The CTS Reeves Model 365 is a low cost VCXO,
enclosed in a 14 Pin DIP Package for use in Phase Lock Loop Applications. The use of PLL
technology above 30 MHz and its small size means more application flexibility. The Model 365
is available with a variety of pullability and stability options and is useful in almost any VCXO
application. Low noise means superior jitter performance in communication applications.
Electrical Specifications:
Absolute Maximum Ratings
Parameter
Symbol
VDD
Vc
Min
-0.5
-0.5
Max
7.0
Unit
Volts
Volts
Parameter
Symbol
Min
4.5
Typical Max
Unit
Volts
Supply Voltage
Voltage Control
Supply Voltage
VDD
5.0
5.5
12.0
Supply Current
2 to 30 MHz
30 to 160 MHz
Output Voltage Levels
Logic '1' Level:
I
I
DD
DD
35
75
mA
mA
VCXO Specifications
Parameter
Symbol Min Nominal Max Unit
V
V
OH
4
Volts
Volts
Control Voltage
Deviation range
Linearity
Vc
0.5
2.5
4.5 Volts
Logic '0' Level:
OL
0.5
100
±ppm
Output Transition Times
Rise & Fall Time 2 to 30 MHz
Rise & Fall Time 30 to 160 MHz
Symmetry or Duty Cycle
*2.0 to 16.0 MHz
10
%
TR,F
TR,F
8
5
nS
nS
Transfer Function
Input Impedance
Modulation Rate
@ -3db
Positive
50
KΩ
45
40
45
40
55
60
55
60
%
%
%
%
10 kHz
16.0 to 30.0 MHz
730.0 to 100 MHz
Over 100 MHz
Test Conditions
CMOS
50% of waveform
TTL
Output Short-Circuit Current
1 minute max. duration
Fanout
Symmetry
Load
1.5 Level
IOS
150
mA
2 to 30 MHz
50pF
30pF
10 TTL Loads
10 TTL Loads
10 TTL Loads
.5V to 2.5V
>30 to 100 MHz
>100 to 160 MHz
CMOS Load 2 to 30 MHz
CMOS Load >30 to 100 MHz
CMOS Load >100 to 160 MHz
TTL Load
50
30
15
10
10
pF
pF
pF
Loads
mS
15pF
Rise & Fall Time
10% to 90%
of waveform
Start Up Time
Period Jitter (pk-pk)
2 to 30 MHz
30 to 160 MHz
30 to 160 MHz
Output Clock Frequency
Operational Temp Range
Frequency Stability
TS
fo
Maximum Current Ratings
50
200
pS
pS
Current (mA) @ Vcc=5.50V
Range in MHz
No Load 15pF
30pF
45
10TTL
35
0.01 Unit Interval
160 MHz
>30
>50
to
to
50
80
35
35
35
40
45
40
40
45
50
65
2
50
35
See Ordering Information
See Ordering Information
>80
to 100
to 1301
to 160
55
35
>100
>130
N/A
N/A
40
* 40/60% for TTL load applications
55
67
171 COVINGTON DRIVE • BLOOMINGDALE, IL 60108
Phone: 630-924-3500 • Fax: 630-924-6610