CTS
Reeves
FREQUENCY PRODUCTS
Model 385/386
Low Cost SM VCXO
CRYSTALS
Features:
• Frequency Range up to 100.0 MHz
• Surface Mount Package
• Low Cost
• ACMOS/TTL Compatible
• Optional Disable Feature
• Standard Frequencies
The CTS Reeves Model 385/386 is a small size
VCXO, which uses ASIC Technology to achieve
superior cost performance in a true SMT Package.
Used in Phase Lock Loop Applications, its small size means more application flexibility.
The Model 385/386 is useful in almost any VCXO application. The Model 386 disable
feature is perfect for automated testing.
CLOCKS
Electrical Specifications:
(Vcc = +5.0V
±10%,
Load = 30 pF)
Symbol
IDD
VOH
VOL
Tr
Tf
SYM
SYM
Min
Max
85
Unit
mA
Volts
Volts
nSeconds
nSeconds
%
%
pS
Unit Interval
mSeconds
MHz
VCXOs
Parameter
Operating Supply Current*
Output Voltage Levels
Logic '1' Level (I
OH
= 8 mA)
Logic '0' Level (I
OL
= -8 mA)
Output Transition Times
Rise Time
Fall Time
Output Duty Cycle (below 100 MHz)
Output Duty Cycle (above 100 MHz)
Period Jitter (pk-pk)
Start Up Time
Output Clock Frequency
0.9*Vcc
0.4
5.0
5.0
55
60
200
0.01
10.0
160
TCXOs
45
40
fo
1.65
* Supply Current varies with Frequency and Load. Consult Factory with specific requirements.
Voltage Control Specifications
Parameter
Control Voltage
Deviation Range
Average Tuning Sensitivity
Linearity
Transfer Function
Input Impedance
Modulation Roll-off
(+25°C)
Min
0.5
100
50
Nominal
2.5
125
62.5
4
Positive
15
Max
4.5
150
75
10
Unit
Volts
±PPM
PPM/V
%
KOhms
kHz
Symbol
Vc
OCXOs
50
10
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
69
CTS
Reeves
CRYSTALS
FREQUENCY PRODUCTS
Equivalent Test Load:
Vcc
Vcc
Out
Ground
Test
Point
HI-Z
Probe
5 TTL LOADS
5V
CR1
500 OHM
NOM.
CR2
CR3
15 pf
CR4
Model 385/386
Low Cost SM VCXO
Waveform Conditions:
Period (100%)
% Uptime
TTL
CMOS
(100%)
+2.4V
(90%)
+1.5V
(50%)
+0.5V
(10%)
t
f
t
f
Voh
Vol
.01uF
CLOCKS
CR1-CR4 are IN3064
Note: Do Not Use TTL Load For CMOS Measurements
Outline Drawing and
Pin Connections:
.457
±.051
Typ
.017
±.002
COPLANARITY
±.051
±.002
.889
±.203
.035
±.008
Pin Description
PIN
1
2
3
4
5
6
FUNCTION
V CONTROL
OEH (OPTIONAL
Model 386
CASE/CKT GND
OUTPUT
N/C
Vcc
9.246 Typ
.364
7.336
±.508
.290
±.020
5.080
.200
14.249 MAX
.561
REF
4.699
.185
MAX
2.540
.100
VCXOs
KEY MM
INCH
Environmental Specifications:
Shock:
2000 G’s 0.5 mS, 3 shocks per direction,
Per MIL-STD-883, Method 2002
Sinusoidal Vibration:
0.06” DA, 10 to 55 Hz and 15 G’s, 55 to
2000 Hz, Per MIL-STD-883, Method 2007
Random Vibration:
20 G’s rms. 20 to 2000 Hz, Per MIL-STD-883,
Method 2026
Moisture:
10 cycles, per MIL-STD-883, Method 1004
(Omit sub-cycle 7)
Seal:
3 x 10
-8
ATM-cc/sec, Per MIL-STD-883,
Method 1014, Conditions B1 +B2
Marking Permanency:
Per MIL-STD-883, Method 2015
Electro-Static Discharge:
Per MIL-STD-883, Method 3016 2KV
Class 1 (Sensitivity)
Attachment Method:
Per MIL-STD-202, Method 210
Condition K (250°C
±5°C
maximum
peak, 90 to 120 seconds over 183°C)
M
A
A
Frequency (M represents decimal)
_M_ _ _ _ _ _ (8M192000 FOR 8.192000 MHz)
_ _M_ _ _ _ _ (16M38400 FOR 16.38400 MHz)
_ _ _M_ _ _ _ (155M5200 for 155.5200 MHz)
TCXOs
OCXOs
Configuring The Part Number...
Model/Lead Options
85A Std Output
J-Lead
85B Std Output
Loadless
86A Tristate Output J-Lead
86B Tristate Output Leadless
Frequency Tolerance
3 =
±0.005%
(±50 ppm)
5 = 0.0025% (±25 ppm)
Op. Temp. Range
C = 0°C to +70°C
I = 40°C to +85°C
Factory Use
AA = Standard
* Inclusive of initial tolerance at time of shipment, changes in supply voltage, load, temperature,
and first year aging.
70
400 REIMANN AVE.
•
SANDWICH, IL 60548
Phone: 815-786-8411
•
Fax: 815-786-3600
•
E-Mail: www.ctsreeves.com
PCB Design
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