CSBLA455KEC8-B0 Murata, CSBLA455KEC8-B0 Datasheet - Page 29

• Manufacturer Part Number: CSBLA455KEC8-B0
• Description: Resonators 455kHz 0.5%
• Manufacturer: Murata
• Series: CSBLAr

Specifications of CSBLA455KEC8-B0

• Tolerance: 0.5 %
• Termination Style: Through Hole
• Operating Temperature Range: - 20 C to + 80 C
• Dimensions: 7 mm W x 9 mm L x 3.5 mm H
• Frequency Stability: 0.3 %
• Frequency: 455 KHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

!Note
Oscillation rise time means the time when oscillation
develops from a transient area to a steady state
condition, at the time the power of the IC is activated.
With a CERALOCK
90% of the oscillation level under steady state
conditions as shown in Fig. 5-3.
Rise time is primarily a function of the oscillation circuit
design. Generally, smaller loading capacitance, higher
frequency of ceramic resonator, and lower mechanical Q
of ceramic resonator cause a faster rise time. The effect
of load capacitance becomes more apparent as the
capacitance of the resonator decreases.
Fig. 5-4 shows how the rise time increases as the load
capacitance of the resonator increases. Also, Fig. 5-4
shows how the rise time varies with supply voltage.
It is noteworthy that the rise time of the ceramic
resistor is one or two decades faster than a quartz
crystal.
Fig. 5-5 shows comparison of rise time between the two.
3. Characteristics of Oscillation Rise Time
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specificaions before ordering.
Fig. 5-3 Definition of Rise Time
0.9 Vp-p
0V
®
, this is defined as the time to reach
t=0
ON
Rise Time
Time
Vp-p
V
DD
Characteristics of CERALOCK
Fig. 5-4 Examples of Characteristics of Oscillation Rise Time
Fig. 5-5 Comparison of the Rise Time of
( IC: TC74HCU04, CERALOCK
a Ceramic Resonator vs. a Quartz Crystal
IC : TC74HCU04AP
V
DD
2.0V/div.
0.1msec./div.
=+5V, C
®
Oscillation Circuit
L1
=C
L2
=6pF
®
: CSACW33M8X51–B0)
P17E14.pdf 04.8.24
CRYSTAL
(33.868MHz)
CSACW33M8X51–B0
5
27
5