X O
VF640
VF640
CMOS/TTL Compatible Clock Oscillator
Miniature 6 Pin Ceramic Package
*Not recommended for new designs
F E AT U R E S
Storage Temp.
Frequency
Range
TE
Ts
F
–55
2.0
+125
130
∆F/F
Overall conditions
including:
calibration, temp.,
aging 10 yrs,
shock, vibration
±100
Vcc
Icc
4.75
3.15
5.00
3.30
5.25
3.45
40
15pF load, 50MHz
10 TTL gates or 50pF Max
40
50
60
4.0
1.5
0.9Vcc
0.1Vcc
2
1σ
Input HIGH (>2.5V) or floating:
Input LOW (<0.5V):
Te/Td
10
1
@1.4V
Tr/Tf
Voh
Vol
Ts
20% to 80%
0.4V to 2.4V
Max Load
Max Load
100
0°C to +70°C (–40°C to +85°C available)
Per MIL–STD–202, Method 213, Cond. E
Per MIL–STD–883, Method 1011, Cond. A
Per MIL–STD–883, Method 2007, Cond. A
260°C, for 10s, Max. or 230°C for 90s, Max
Leak rate less than 5 x 10
–8
atm.cc/s of helium
Pin #1–N/C
Pin #3–Ground, Case
Pin #5–N/C
Pin #2–Tristate Control
Pin #4–Output
Pin #6–Vcc
Very Low Phase Jitter
•
Tristate Output Control
•
Tight Duty Cycle Available
•
0.335"
(8,51)
#6
#5
#4
Absolute
Max. Ratings
Parameter
Input Break
Down Voltage
Symb
Vcc
Condition
Min
–0.5
Typ
Max
7.0
Unit
V
°C
MHz
ppm
Note
Frequency
Stability
1
0.310"
(7,87mm)
LE
Input Current
Load
Electrical
VF640
19.44MHZ
BO1H
Input Voltage
V
mA
Std.
LV Opt.
2
#1
#2
#3
Duty Cycle
%
ns
V
V
ms
ps
3
0.132"
±
0.010"
(3,35mm
±
0,254mm)
0.250" REF
(6,35mm)
Rise/Fall Time
Logic “1” Level
Logic “0” Level
Start–up Time
Phase Jitter
Tristate
Function
0.100"
(2,54mm)
O
0.010"
±
0.002"
(0,254mm
±
0,05mm)
0.018"
±
0.002"
(0,457mm
±
0,05mm)
fj>1KHz
BS
#1
#2
#3
0.200"
(5,08mm)
ACTIVE
INFINITE IMPEDANCE
ns
Enable/
Disable Time
Operating
Temperature Range
Mechanical Shock
Thermal Shock
Vibration
#6
#5
#4
Environmental
and Mechanical
Electrical
Connections
0.300"
(7,62mm)
Soldering Conditions
Hermetic Seal
Pin Out
O
VF640
Specification
±20
±25
±50
±100
±500
ppm
ppm
ppm
ppm (std.)
ppm
All dimensions are typical unless otherwise specified.
Creating a Part Number
FREQ.
OPERATIONAL TEMP. RANGE
FREQUENCY STABILITY
Code
S
A
B
C
Code
1
Specification
0°C to +70°C (std.)
-40°C to +85°C
Notes:
1. Standard frequency stability, others available.
2. Current is load and frequency dependent.
3. Standard symmetry, tighter available.
4. Surface mount available, see VF640–G, VF640–L.
All specifications are subject to change without notice.
INPUT VOLTAGE
DUTY CYCLE
Code
H
Code
L
Specification
3.3 Volt
5.0 Volt (std.)
Specification
±5%
±10%
(std.)
Example: VF640BHL-1-19.44MHz: Frequency Stability
±25ppm,
Duty Cycle
±1.5%,
Input Voltage 3.3 Volt
±5%,
Operating
Temperature -40°C to +85°C, Frequency 19.44MHz.
75 South Street, Hopkinton, MA 01748
800-982-5737
508-435-6831
Fax: 508-435-5289 www.valpeyfisher.com
65
Embedded System
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