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参数资料
| 型号： | VF540H-2-40.000MHZ |
| 厂商： | VALPEY FISHER CORP |
| 元件分类： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 40 MHz, HCMOS/TTL OUTPUT |
| 封装： | HERMETIC SEALED PACKAGE-4 |
| 文件页数： | 1/1页 |
| 文件大小： | 21K |
| 代理商： | VF540H-2-40.000MHZ |
75 South Street, Hopkinton, MA 01748
800-982-5737
508-435-6831
Fax: 508-435-5289 www.valpeyfisher.com
67
XO
VF540
HCMOS/TTL Compatible
Surface Mount Clock Oscillators
FEATURES
Very Low Phase Jitter
at All Frequencies
EMI Shielded
Tight Duty Cycle Available
Tristate Control Standard
Industry Standard Footprint
Parameter
Symb
Condition
Min
Typ
Max
Unit
Note
Input Break
Vcc
–0.5
7.0
V
Down Voltage
Storage Temp.
Ts
–55
+125
°C
Frequency
F
1.5
130
MHz
Range
Frequency
F/F
Overall conditions
±100
ppm
1
Stability
including:
calibration, temp.,
aging 10 yrs,
shock, vibration
Input Voltage
Vcc
4.75
5.00
5.25
V
Standard
3.15
3.30
3.45
LV Opt.
Input Current
Icc
15pF load, 50 MHz
40
mA
2
Load
Duty Cycle
@1.4V
40
50
60
%
3
(Symmetry)
Rise/Fall Time
Tr/Tf
0.4V to 2.4V
1.5
ns
20% to 80%
4.0
Logic “1” Level
Voh
Max Load
0.9Vcc
V
Logic “0” Level
Vol
Max Load
0.1Vcc
V
Start–up Time
Ts
2
10
ms
Phase Jitter
1
σ
1
ps
fj> 1KHz
Tristate Function
Enable/
Te/Td
100
ns
Disable Time
Operating
Temperature Range
0°C to +70°C (–40°C to +85°C, –55°C to +125°C available)
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
260°C, for 10s, Max; 230°C, for 90s, Max.
Hermetic Seal
Leak rate less than 5 x 10–8 atm.cc/s of helium
Pin Out
Pin #1–Tristate Control
Pin #2–Ground, Case
Pin #3–Output
Pin #4–Vcc
10 TTL gates or 50pF max.
Absolute
Max.
Ratings
Electrical
Environmental and
Mechanical
Electrical
Connections
Notes:
1. Up to ±20ppm available.
2. Current is load and frequency dependent.
3. Standard symmetry, tighter available.
All specifications are subject to change without notice.
Input HIGH (>2.5V) or floating: ACTIVE
Input LOW (<0.5V): INFINITE IMPEDANCE
0.550" TYP
(13,97mm)
0.385"
(9,78mm)
0.018" TYP
(0,457mm)
0.200"
(5,08mm)
0.185" MAX
(4,70mm)
#4
#3
#1
#2
0.130" TYP
(3,302mm)
0.300" (7,62mm)
Mounting Center
#1
#2
#4
#3
VF540
19.44MHz
BO1H
0.350"
(8,89mm)
Creating a Part Number
VF540
FREQUENCY STABILITY
Code
Specification
S
±20
ppm
A
±25
ppm
B
±50
ppm
±100 ppm (std.)
C
±500 ppm
DUTY CYCLE
Code
Specification
HH
±2.5%
H
±5%
±10% (std.)
INPUT VOLTAGE
Code
Specification
L
3.3
±5% Volt
5.0
±5% Volt (std.)
OPERATIONAL TEMP. RANGE
Code
Specification
0
°C to +70°C (std.)
1
-40
°C to +85°C
2
-55
°C to +125°C*
*Not always available
FREQ.
Example: VF540AHH-2-19.44MHz: Frequency Stability
±25ppm,
Duty Cycle
±2.5%, Input Voltage 5.0 Volt ±5%, Operating
Temperature -55
°C to +125°C, Frequency 19.44MHz.
All dimensions are typical unless otherwise specified.
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