Product Data Sheet
TC-350 Series Low Profile TCXO
s
Temperature Compensated Crystal Oscillators
Features
0
-35
TC
7
to 7
1
Frequency from 1 to 77.76 MHz
± ppm, -40º to +85º
1.0
C
C
Low Profile: 3.81 mm (0.15 Ht.
)
Aging to <5 ppm for Ten Years
3.3 Vdc or 5 Vdc operation
TTL / HCMOS Output
O
z
CX
6 MH
T
.7
SMC Clock
SONET/SDH Network Timing Sources
Wireless Communications
Satellite Communications
Portable Test Equipment
Vectron International has introduced a series of low
profile surface mount, Temperature Compensated
Crystal Oscillators (TCXO available in frequencies
s)
from 1 to 77.76 MHz.
The TC-350 series surface mount TCXO can be
mounted using the standard convection reflow process.
Current drain to less than 5 mA is available upon
request. Aging <5 ppm for ten years.
For additional information about TCXO visit our
s
website at:
www.tcxo.com
Standard Frequencies:
Package:
(Other options are available upon request)
10.00, 12.80, 13.00, 16.384, 19.44, 20.00, 20.48, 27.00
MHz
Available from 1.0 MHz to 77.76 MHz
22.86 x 17.78 x 3.81 mm (0.90x 0.70x 0.15
)
C
= 5.0 Vdc ±5%
D
= 3.3 Vdc ±
5%
Current draw will vary greatly depending on frequency and output type.
For this series TCXO typical current draw will be about 10 mA. Please
consult the factory about your exact current requirements.
A
= HCMOS / ACMOS
0.8 Vdd
0.5 Vdc
5 ns max.
50% ±
10%
100k ohm // 10 pF
B-507
= ± x 10
-7
5.0
B-106
= ± x
1.0
10
-6
C-507
= ± x 10
-7
5.0
C-106
= ± x 10
-6
1.0
D-757
= ± x 10
-7
7.5
D-156
= ± x 10
-6
1.5
F-106
= ±1.0 x 10
-6
F-206
= ±2.0 x 10
-6
G-156
= ±1.5 x 10
-6
G-256
= ±2.5 x 10
-6
over
over
over
over
over
over
over
over
over
over
0º to +50º
C
C
0º to +50º
C
C
0º to +70º
C
C
0º to +70º
C
C
-20º to +70º
C
C
-20º to +70º
C
C
-40º to +85º
C
C
-40º to +85º
C
C
-55º to +85º
C
C
-55º to +85º
C
C
B
= 10 TTL
2.4 Vdc
0.5 Vdc
10 ns max.
50% ±
10%
10 TTL
NOTE: Tighter
stabilities and wider
temperature ranges
are available, please
consult the factory.
Supply Voltage (Vdd):
Current:
Output:
Voh min:
Voh max:
Rise/Fall Time:
Symmetry (Duty Cycle):
Load:
Temperature Stability:
Note:
Not all stabilities are
available with all frequency /
Output combinations. Please
consult the factory.
Aging (typical):
Frequency vs Supply:
Electrical Frequency Adjust:
<5 ppm for ten years @ +70º
C
<± ppm for a ±5% change in Supply Voltage
0.1
± ppm minimum via external voltage, 0 to Vdd
5
22.86
( .900)
2.54
( .100)
1
2
17.78
( .700)
4
7.62
( .300)
3
3.81
( .15)
.100
2.54
( .100)
(in.)
.045R
.100
4 places
3.175 SQ.
( .125)
7.62
( .300)
17.78
( .700)
12.7
( .500)
(in.)
pre-heating
60 to 90 sec.
a t 1 5 0 º to 170º
C
C
reflow
20 to 40 sec.
at >
200º
C
Note: TCXO are precision subsystems with tolerances measured to ±0.01 ppm. Non-Hermetically sealed TCXO should
s
s
not be subjected to a wash process that will immerse the TCXO in solvents. NO CLEAN is the recommended procedure.
The TC-350 series of TCXO has been designed for pick and place reflow soldering. The suggested reflow profile is
s
shown above. The TCXO may be reflowed one time in the non-inverted state. Typical frequency shift as a result of reflow
is <1.0 ppm per reflow. VI recommends waiting at least two hours after reflow before measuring the unit.
Vdd
Vdd
.01µF
.01µF
PROBE
DUT
OUT
D1
R2
270Ω
R1
6k
D2
D3
D4
C1
.01µF
PROBE
Vdd
DUT
OUT
CL
RL
(A)
HCMOS / ACMOS
(B)
TTL
The Standard ship method for volume production of the TC-350 series is in a matrix tray. These
trays are 100% recyclable. The trays also offer the added feature that they can be continuously
feed into a pick-n-place machine eliminating the down time required with tape-n-reel.
12 15/16
0.44
0.44
0.20 Deep
VI Logo
0.25
4.00
0.15
0.95
0.25
0.15
0.75
3 x 13 Array / 39 units per tray
Pin 1
this corner
Although protection circuitry has been
designed into this device, proper precautions
should be taken to avoid exposure to
electrostatic discharge (ESD) during handling
and mounting. VI employs a human-body
model (HBM) and a charged-device model
(CDM) for ESD-susceptibility testing and
protection design evaluation. ESD voltage
thresholds are dependent on the circuit
parameters used to define the mode.
Although no industry-wide standard has been
adopted f or the CDM, a standard HBM
(resistance = 1500 ohms, capacitance =
100pf) is widely used and therefore can be
used for comparison purposes. The HBM
ESD threshold presented here was obtained
by using these circuit parameters.
ESD Threshold Voltage
Model
Human-Body (HBM)
Charged-Device
Threshold
500
500
Unit
V min
V min
Automotive Electronics
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