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參數資料
| 型號： | T-3254-12.288MHZ |
| 廠商： | VALPEY FISHER CORP |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 12.288 MHz, CMOS/LSTTL OUTPUT |
| 封裝： | ROHS COMPLIANT, HERMETIC SEALED, SMD, 4 PIN |
| 文件頁數： | 1/3頁 |
| 文件大?。?/td> | 220K |
| 代理商： | T-3254-12.288MHZ |
75 South Street, Hopkinton, MA 01748 800-982-5737 508-435-6831 FAX 508-435-5289 www.valpeyfisher.com RevD0910
1
Extended Temperature/COTS
XO, 5.0V
20KHz to 100MHz
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Note
Frequency
Range
F
0.02
100
MHz
Frequency
Stability
F/F
Overall including calibration,
temperature, voltage and load
variation
75
±500
ppm
See Chart
Operating
Temperature
T
-55
+200
C
See Chart
Aging
First Year
After First Year
3
1
ppm
ppm/yr
Supply
Voltage
Vcc
4.5
5.0
5.5
V
Supply
Current
40
mA
Output
All units, full range
Loads 3 TLL loads, or 10 LSTTL loads, or 15pF CMOS
Symmetry
TTL and LSTTL @ 1.4V
CMOS, @ 50% VDD
40/60
%
Rise and Fall
Times
TTL and LSTTL from 0.4 to 2.4V
CMOS, 15 pF, from 0.4 to (VDD -0.4) V
CMOS, 30 pF, from 0.4 to (VDD -0.4) V
8
10
ns
Input
requirement
for pin.1
Output enable -
pin 1 may float or 2.8V min
Output disable (Tristate)
pin 1 requires 0.4V max
Features
Tiny 5 x 7 SMD form factor
Hermetically sealed for rugged environmental
conditions
Extremely wide operating temperature range
accommodates harsh environments
All crystals are processed in-house with tight angle
control to assure best frequency-temperature
characteristics
All units are vacuum baked before sealing at 175°C
for 16 hours to eliminate moisture traces and pre-age
units for superior stability
Applications
Thru-hole PCB applications that require an
HCMOS/TTL 5V clock and that might be
exposed to extremely harsh environmental
conditions.
RoHS Status
Electrical Specifications
Description
Owing to their small size, light weight, and
rugged characteristics, these 5V HCMOS
extended temperature/COTS oscillators fulfill
tasks not previously feasible. They are used in
applications that take advantage of their
extended temperature range and high
performance. Twenty four different models (with
and without tristate) cover -55°C to +200°C
operation and provide frequency selection from
20 KHz to 100 MHz. They combine excellent
long-term reliability, loading characteristics, and
superior startup performance.
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