CTS
Communications Components, Inc
.
171 Covington Drive
Bloomingdale, IL 60108
630-924-3500
Document No. 008-0244-0
Page 1 of 3
Rev F (redline) ECO #
Model 357
5x7mm Low Cost
Surface Mount VCXO
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL
MIN
TYPICAL
MAX
UNIT
Output Frequency Range
Model 357S, 357W
Model 357L, 357V
f
O
1.5
1.5
-
-
80
80
MHz
MHz
Frequency Stability (Note 1)
(See Ordering Information)
-
-
-
20, 25, 50
ppm
Absolute Pull Range
(Note 2)
(See Ordering Information)
-
32, 50, 80, 100
-
-
ppm
Supply Voltage
Model 357S, 357W
Model 357L, 357V
V
CC
4.5
2.97
5.0
3.3
5.5
3.63
V
V
Operating Supply Current
C
L
= 15pf
Model 357S, 357W
Model 357L, 357V
I
CC
-
-
-
-
40
50
mA
mA
Output load
C
L
- -
15
pf
Control Voltage
Model 357S, 357W
Model 357L, 357V
V
C
0.5
0.3
2.5
1.65
4.5
3.0
V
V
Output Voltage Levels
Logic '1' Level
I
OH
= 14 mA
V
OH
0.9 * Vcc
-
-
V
Logic '0' Level
I
OL
= -14 mA
V
OL
-
-
0.1 * Vcc
V
Output Transition Times
(10% to 90%)
Rise & Fall Time
C
L
= 15pf
T
R,
T
F
- - 5.0 ns
Output Duty Cycle
(@ 50% Level)
SYM
45
-
55
%
Start Up Time
-
-
-
10.0
ms
Phase Jitter
(Bandwidth 12K 20M Hz)
-
-
< 1
-
ps RMS
Linearity
< 52 MHz
> 52 MHz
L
-
-
-
-
10
15
%
Transfer Function
-
-
Positive
-
-
Input Impedance
Z
C
50 - -
K
Ohms
Modulation Roll-off
(@ -3dB)
- 10 - -
KHz
Tri-state Oscillator Run
Enable Input Voltage
Disable Input Voltage
Enable/ Disable Time
V
IH
V
IL
t
PLZ
2.5
-
-
-
-
-
-
0.5
100
V
V
ns
Notes
1. Inclusive of initial tolerance at the time of shipment, changes in supply voltage, load and operating
temperature.
2. Minimum guaranteed frequency shift from f
o
over variations in temperature, aging, power supply and load at
an average operating temperature of +40C for 10 years.
Frequency Stability to 20 PPM
+3.3Vdc or +5.0Vdc Operation
HCMOS Output
Operating Temperature to 40C to +85C
Output Enable Standard
Tape & Reel Packaging
Pb Free
CTS
Communications Components, Inc
.
171 Covington Drive
Bloomingdale, IL 60108
630-924-3500
Document No. 008-0244-0
Page 2 of 3
Rev F (redline) ECO #
Model 357
5x7mm Low Cost
Surface Mount VCXO
.100 [2.54]
.200 [5.08]
Dimensions in Inches [MM]
Suggested Pad Geometry
.079 [2.00]
.173 [4.40]
.071 [1.80]
ORDERING INFORMATION
357
M
Supply Voltage
L = +3.3 Vdc, Pin 2 Enable (std)
S = +5.0 Vdc, Pin 2 Enable (std)
V = +3.3 Vdc, Pin 5 Enable
W = +5.0 Vdc, Pin 5 Enable
Frequency in MHz
M Indicates decimal point
and MHz. Frequency shall be
recorded with all significant
digits identified.
Absolute Pull Range
A = 32 ppm (Not Available)
B = 50 ppm (std)
C = 80 ppm
D = 100 ppm
Operating Temperature Range
C = -20C to +70C (std)
I = -40C to +85C
Frequency Stability
3 = 50 ppm (std)
5 = 25 ppm
6 = 20 ppm
Example P/N: 357LB3C019M4400
MECHANICAL SPECIFICATIONS
Marking Notes:
1. ** Manufacturing Site Code.
2. YY year, WW week.
3. Frequency shall be marked
with 4 significant digits to the
right of the "M".
Terminations plated with
0.3 1.0 um gold (Au).
QUALITY AND RELIABILITY
Quality Systems meet or exceed the requirements of ISO 9000: 2000 standards.
Reliability Audits are performed on this or similar products with results available upon request.
Enable Truth Table
Pin 2
Pin 4
"1" Output
"0" High
Imp.
Open Output
Pin Symbol Functional
Description
1 VC
Control
Voltage
2 EOH
Enable
3
GND
Circuit and Package Ground
4 Output
RF
Output
5
N.C.
Not Connected Internally
6 Vcc
Supply
Voltage
1
( 1.12 )
0.044
PIN 1 IDENTIFIER
6
4
3
Inch
( MM )
Key:
( 3.68 )
0.145
( 1.4 )
0.197
( 5.0 )
0.079
0.276
0.055
0.200
( 5.10 )
( 7.0 )
MAX
( 2.0 )
2
5
( 2.54 )
0.100
CTS ** YYWW
357LB3C
19M4400
CTS
Communications Components, Inc
.
171 Covington Drive
Bloomingdale, IL 60108
630-924-3500
Document No. 008-0244-0
Page 3 of 3
Rev F (redline) ECO #
Model 357
5x7mm Low Cost
Surface Mount VCXO
Dimensions in Millimeters
DIRECTION OF FEED
5.40
5.70
8.40
7.90
16.0
8.0
4.0
1.50
1.75
2.10
2.40
23
180
60
17.5
120
13
2.0
ENVIRONMENTAL SPECIFICATIONS
Storage Temperature:
-55C to +125C.
Temperature Cycle:
400 cycles, -55C to +125C, 10 min dwell, 1 min transfer.
Mechanical Shock:
1,500g's, 0.5mS, sinewave, 3 shocks each direction, in 3 planes.
Sinusoidal Vibration:
0.06" D.A., 10 to 55 Hz and 20g's, 55 to 2,000 Hz,
3 cycles per plane.
Gross Leak:
No leak shall appear while immersed in an FC40 or equivalent
liquid at 125C for 20 seconds.
Fine Leak:
Mass spectrometer leak rates less than 2x10
-8
ATM cc/sec air
equivalent.
Resistance to Soldering Heat:
Product must survive 3 reflows of 260C peak, 10 seconds
maximum.
High Temperature Operating Bias:
2,000 hours at 125C, disregarding frequency shift.
Frequency Aging:
< 5 ppm shift in 1,000 hours at 85C.
TAPE AND REEL INFORMATION
Device quantity shall be 1,000 pieces on a 180mm reel.
S ug g ested R eflo w P ro file
0
100
200
300
0
20
40
60
80 100 120 140 160 180 200 220 240 260 280 300
T im e (S eco nd s)
T em p .
(C )
M axim um 260 C , 10 seconds
Typical 245C
130C
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