VFT540LCNT-250.0MHZ [CTS]
Oscillator,;
CTS 
VFT540 Series SMD CLOCK
Product Data Sheet
COOL…TO THE TOUCH
Features
• Small, Low Profile SMD Package
• Very Low Phase Jitter and Phase Noise
• Excellent Frequency Stability
• Low Aging, Vacuum sealed Crystal
• SONET/SDH stability available
• High Frequency, no multiplication
0.55 (14 mm)
0.35 (9 mm)
SMD Reflow Profile
250
200
150
100
50
0.24 (6.1 mm)
0
0
50
100
150
200
Time, s
3
4
1
6
2
5
0.300 (7.62 mm)
0.200 (5.08 mm)
Creating a Part Number
FREQUENCY, MHz
VFT540
Temperature Range
Supply Voltage
Frequency Stability
Tristate Control
Code
A
Specification
-10°C to 60°C
0°C to 70°C
Code
Specification
5V ±5%
Code
N
Specification
±50 ppm
±20 ppm
Code
T
Specification
S
L
Pin #2
N/A
B
C
3.3V ±5%
S
N
-40°C to 85°C
VF Technologies • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
VFT540 Series SMD CLOCK
Specifications
Symb
Condition
Min
Typ
Max
Unit
Note
Parameter
Absolute Maximum Ratings
Vcc
-0.5
7.0
V
Input Break
Down Voltage
Storage temp.
Contr. Voltage
Ts
Vc
-40
-1
125
9
° C
V
Electrical
F
8
250
MHz
V
Frequency
Range
Vcc
3.135
4.75
3.30
5.0
3.465
5.25
50
L
S
Input Voltage
Icc
∆F/F
∆F/F
No Load
Overall
mA
@ 155 MHz
See chart
Input Current
Frequency Stab.
Frequency
Stability for
SONET
vs. Temperature
±10
±1
ppm
ppm/V
ppm/year
ppm
vs. Vcc
aging
±1
First Year
Overall
±20
55
@Vc = 1.65 V
15 pF max
45
Load
Duty cycle
@50%
20 to 80 %
50
2
%
ns
Tr/Tf
Voh
Vol
Ts
Rise/Fall time
Logic "1" level
Logic "0" level
Start up time
Phase jitter
SSB Phase Noise
0.9Vcc
V
0.1Vcc
10
1
V
2
ms
0.4
ps
fj>100 Hz
@155 MHz
1σ
@10 Hz
-70
dBc/Hz
@100 Hz
@1 KHz
@10 KHz
@100 KHz
-100
-130
-150
-160
Input HIGH (>2.5V),or floating: ACTIVE
Tristate
Input LOW (<0.5V) :
Te/Td
INFINITE IMPEDANCE
100
Function
ns
Enable/disable
Time
Environmental and Mechanical
0°C to 70°C , -40°C to 85°C
Operating temp.
range
Per MIL-STD-202, Method 213, Cond. E
Mechanical Shock
Thermal Shock
Vibration
Per MIL-STD-883, Method 1011, Cond. A
Per MIL-STD-883, Method 2007, Cond. A
230°C for 90s Max
Soldering Conditions
Hermetic Seal
-8
Leak rate less than 5x10 atm.cc/s of helium (crystal only)
Electrical Connections
Pin Out
Pin #1- N/C
Pin #2 – Tristate control (code “T”), or N/C, (code “N”)
Pin #3 - Case, Gnd
Pin #4 - Output
Pin #5 – N/C
Pin #6 - Vcc
VF Technologies • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
相关型号：
©2020 ICPDF网 联系我们和版权申明