357SAI-45M0000 [CTS]
Oscillator;
CTS 
¨ Stability to ±25 PPM
¨ +3.3Vdc or +5.0Vdc Operation
¨ HCMOS Output
¨ Operating Temperature to –40°C to +85°C
¨ Output Enable
Model 357
5x7mm Low Cost
Surface Mount VCXO
¨ Tape & Reel
Electrical Characteristics
(Load = 15 pF)
Symbol
VCC
Parameter
Min
Typical
Max
Unit
Supply Voltage
Model 357S
Model 357L
4.5
2.97
5.0
3.3
5.5
3.63
V
V
Operating Supply Current
Model 357S
Model 357L
ICC
-
-
-
-
40
50
mA
mA
Output Voltage Levels
Model 357S
Logic '1' Level
VOH
VOL
0.9 * Vcc
-
-
-
-
V
V
Logic '0' Level
Model 357L
0.1 * Vcc
-
Logic '1' Level
Logic '0' Level
VOH
VOL
0.9 * Vcc
-
-
-
0.1 * Vcc
V
V
Output Transition Times
Rise Time
TR
TF
-
-
-
-
-
-
5.0
5.0
nS
nS
mS
%
Fall Time
Start Up Time
-
-
10.0
55
Output Duty Cycle (@ 50% Level)
SYM
45
Phase Jitter (Bandwidth 12K – 20M Hz)
-
-
< 1
-
pS RMS
Output Clock Frequency
Model 357S
Model 357L
fO
1.5
1.5
-
-
45
45
MHz
MHz
Control Voltage
Model 357S
Model 357L
VC
0.5
0.3
2.5
1.65
4.5
3.0
V
V
Absolute Pull Range (Note 1)
Model 357L, 357S
-
32,50,80 or
-
-
± PPM
(See Ordering Information)
100
Linearity
L
-
-
-
10
-
%
-
Transfer Function
Input Impedance
Modulation Roll-off (@ -3dB)
-
Positive
ZC
-
50
10
-
-
-
KOhms
KHz
-
Notes
1. Minimum guaranteed (voltage controlled) frequency shift over all conditions (temperature, aging, power supply and
load) for the required lifetime at the average effective ambient operating temperature.
¨ ¨ ¨ CTS Frequency Products ¨ 171 Covington Drive ¨ Bloomingdale, IL 60108 ¨ 630-924-3500 ¨ ¨ ¨
Rev. X6
Model 357
5x7mm Low Cost
Surface Mount VCXO
MECHANICAL SPECIFICATIONS
Suggested Pad Geometry
Dimensions in Inches [MM]
.100 [2.54]
.071 [1.80]
CTS ** YYWW
357LAC
38M8800
.079 [2.00]
·
.173 [4.40]
.079 [2.00]
.200 [5.08]
Pin Symbol
Functional Description
Control Voltage
Tri-State Enable
Circuit and Package Ground
RF Output
Not Connected Internally
Supply Voltage
** Manufacturing Site Code.
Frequency shall be marked
With 4 significant digits to the
Right if the “M”.
Enable Truth Table
1
2
3
4
5
6
VC
EOH
GND
Output
N.C.
Pin 2
“1”
Pin 4
Output
“0”
Open
High Imp.
Output
Vcc
ENVIRONMENTAL SPECIFICATIONS
§
§
Storage Temperature:
Temperature Cycle:
-55°C to +125°C
400 cycles, -55°C to +125°C, 10 min dwell, 1 min
transfer
§
§
§
§
§
Mechanical Shock:
Sinusoidal Vibration:
Gross Leak:
1,500g’s, 0.5mS, ½ sinewave, 3 shocks each
direction, in 3 planes
0.06” D.A., 10 to 55 Hz and 20g’s, 55 to 2,000 Hz,
3 cycles per plane
No leak shall appear while immersed in an FC40 or
equivalent liquid at 125°C for 20 seconds
Mass spectrometer leak rates less than 2x10-8
cc/sec air equivalent
Product must survive 3 reflows of 260°C peak, 10 seconds
maximum
Fine Leak:
Resistance to Soldering Heat:
§
§
High Temperature Operating Bias:
Frequency Aging:
2,000 hours at 125°C, disregarding frequency shift
< 5 ppm shift in 1,000 hours at 85°C
ORDERING INFORMATION
357
- ___M________
Example: 357LAC – 38M8800
Frequency in MHz
M – Indicates decimal point.
Frequency shall be recorded
with 4 significant digits minimum
to the right of the “M”.
Absolute Pull Range
A = ±32 PPM
B = ±50 PPM
C = ±80 PPM
D = ±100 PPM
Supply Voltage
L = +3.3Vdc
S = +5.0Vdc
Operating Temperature Range
C = 0°C to +70°C
I = -40°C to +85°C
¨ ¨ ¨ CTS Frequency Products ¨ 171 Covington Drive ¨ Bloomingdale, IL 60108 ¨ 630-924-3500 ¨ ¨ ¨
Rev. X6
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