KBR-3.58M-203 AVX Corporation, KBR-3.58M-203 Datasheet - Page 29

• Manufacturer Part Number: KBR-3.58M-203
• Description: Timing Devices / Resonators / Crystals Oscillators
• Manufacturer: AVX Corporation

AVX/Kyocera Clock Oscillators
GENERAL DESCRIPTION
to control the timing and operation of logic circuitry. They
differ from other components used to control the timing of
logic circuits, such as quartz crystals and ceramic resona-
tors, in that clock oscillators need a power supply but no
additional external circuitry to operate. Clock oscillators are
usually made by combining in a single package a frequency
control device such as a quartz crystal, and a hybrid circuit
of resistors, capacitors, and either transistors or an inte-
grated circuit. The package is often either a welded steel
can or ceramic package hermetically sealed which protects
the crystal and electronics from environmental effects and
also reduces the unwanted electromagnetic and radio-fre-
quency emissions which oscillators can generate.
OSCILLATION DEVICES
ing waveforms for electronic devices. The simplest of these
is a simple circuit using capacitors, inductors and an active
element such as a transistor or operational amplifier. This
is an easy, low cost solution but the frequency is not very
stable due to temperature and individual component varia-
tions. A more stable circuit would utilize a ceramic resona-
tor, which has the advantage of better frequency tolerance,
but resonators are only available in certain frequency ranges
and stability of ±0.5% is the best that can be achieved. If
better frequency stability is needed, then the most popular
method is to use a circuit which relies on the piezoelectric
properties of quartz crystals to stabilize the oscillation.
polished quartz crystal, the crystal lattice will deform due
†
28
Will also drive TTL. See catalog for details – page 31.
Cordless & Cellular Phones
Temperature Compensated
Series
TTL
K50 -HC* -C †
KXO -01
KXO -HC* -T (KHO -HC* -T)
HCMOS
K50 -HC* -C †
K50 -CS* -SE
KXO -HC* -C (KHO -HC* -C)
386 -HC
Low Voltage
K50 -3C (3.3V)
Clock oscillators are devices which generate the pulses
Various types of circuits can be used to generate tim-
If an alternating electrical field is applied to a cut and
KT11
KT12
KT14
VCO
13.0, 14.4, 14.85, 16.8, 19.2, 19.44, 19.68, 19.8
Frequency (MHz)
12.8, 13.0, 14.4, 14.85, 15.36, 16.8, 19.2
24,32,40,50
12.8, 13.0, 14.4, 16.8, 19.2, 19.68
Output
1 to 72
8 to 68
8 to 50
8 to 68
8 to 50
1 to 72
8 to 68
Frequency (MHz)
200~2000
Fan Out
10 TTL
10 TTL
50 pF
7 TTL
50pF
50pF
15pF
15pF
to what is is called the piezoelectric effect. At one particu-
lar frequency, which is determined by the geometry and
size of the crystal, vibration will occur much more easily
than at any other frequency. This is called the “resonant”
frequency. If an oscillation circuit is built around this crys-
tal, the mechanical vibrations can be used to control the
electrical oscillations very precisely.
from the substrate up. The whole module is hermetically
sealed into an all-metal welded package to protect it from
humidity. The case is directly grounded into a pin to help
minimize RF radiation and meet FCC’s EMI specifications.
AVX/Kyocera. These extend from 1 MHz up to 72 MHz and
include TTL and HCMOS compatible drive levels. AVX/
Kyocera also offers special low power consumption clocks
for long life battery applications. (See chart page 28.) Ap-
plication specific designs for critical requirements of today’s
high-speed, 32-bit microprocessors are available.
WAVEFORM
clock oscillator with an explanation of the parameters im-
portant for correct selection of the appropriate device.
a measure of how close to being equal the high and low
parts of a waveform are. A perfectly symmetrical waveform
will have duty cycle of 50%. We usually specify the mini-
mum and maximum variations of the duty cycle as, for
example: 60/40%. This is computed from the times shown
on the diagram below as A /A+B.
AVX/Kyocera builds its high quality clock oscillators
A full range of clock oscillators are manufactured by
The diagram below shows a typical waveform of a
Often called the symmetry of a waveform, duty cycle is
V
V
0.9 V
0.9 V
0.9 V
0.9 V
0.9V
OH
DD
2.4
2.4
-0.5
Output Level
Min
1Vp-p/10kΩ /10pF
1Vp-p/10kΩ /10pF
1Vp-p/10kΩ /10pF
DD
DD
DD
DD
DD
Output
V
0.1 V
0.1 V
0.1 V
0.1 V
0.1 V
OL
0.4
0.4
0.5
Max
DD
DD
DD
DD
DD
High Performance Surface Mount
Ultra Low Profile Surface Mount
Features
CMOS/TTL Drive
Cost Performance
Versatile Drive Capabilities
CMOS/TTL Drive
Low Power Consumption
Versatile Drive Capabilities
Drives 80386
Low Supply Voltage
Miniature Surface Mount
Surface Mount
Features