VFT540 Series SMD CLOCK
COOL…TO THE TOUCH
Product Data Sheet
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
SMD Reflow Profile
0
50
100
150
200
250
0 50 100 150 200
Time, s
Temperature, °C
0.55 (14 mm)
0.35 (9 mm)
0.24 (6.1 mm)
0.200 (5.08 mm)
0.300 (7.62 mm)
123
45
6
Supply Voltage
Code Specification
S 5V ±5%
L 3.3V ±5%
Temperature Range
Code Specification
A -10°C to 60°C
B 0°C to 70°C
C -40°C to 85°C
FREQUENCY, MHz
Frequency Stability
Code Specification
N ±50 ppm
S ±20 ppm
Tristate Control
Code Specification
T Pin #2
N N/A
VFT540
Creating a Part Number
VF Technologies • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
VFT540 Series SMD CLOCK
VF Technologies • 75 South Street, Hopkinton, MA 01748 • Tel. 1-800-XTALREP, 508-435-6831 • FAX 508 4355289
Specifications
Parameter Symb Condition Min Typ Max Unit Note
Absolute Maximum Ratings
Input Break
Down Voltage
Vcc -0.5 7.0 V
Storage temp. Ts -40 125 ° C
Contr. Voltage Vc -1 9 V
Electrical
Frequency
Range
F 8 250 MHz
Input Voltage Vcc 3.135
4.75
3.30
5.0
3.465
5.25
V L
S
Input Current Icc No Load 50 mA @ 155 MHz
Frequency Stab. ∆F/F Overall See chart
Frequency
Stability for
SONET
∆F/F vs. Temperature
vs. Vcc
aging
Overall
±10
±1
±1
±20
ppm
ppm/V
ppm/year
ppm
First Year
@Vc = 1.65 V
Load 15 pF max
Duty cycle @50% 45 50 55 %
Rise/Fall time Tr/Tf 20 to 80 % 2 ns
Logic "1" level Voh 0.9Vcc V
Logic "0" level Vol 0.1Vcc V
Start up time Ts 2 10 ms
Phase jitter 1σ 0.4 1 ps fj>100 Hz
SSB Phase Noise @10 Hz
@100 Hz
@1 KHz
@10 KHz
@100 KHz
-70
-100
-130
-150
-160
dBc/Hz @155 MHz
Tristate
Function
Input HIGH (>2.5V),or floating: ACTIVE
Input LOW (<0.5V) : INFINITE IMPEDANCE
Enable/disable
Time
Te/Td 100 ns
Environmental and Mechanical
Operating temp.
range
0°C to 70°C , -40°C to 85°C
Mechanical Shock Per MIL-STD-202, Method 213, Cond. E
Thermal Shock Per MIL-STD-883, Method 1011, Cond. A
Vibration Per MIL-STD-883, Method 2007, Cond. A
Soldering Conditions 230°C for 90s Max
Hermetic Seal Leak rate less than 5x10-8 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