Product Data Sheet
760 Series
Features
P/N 8473 & 8500
s
Oven Controlled Crystal Oscillators
12.800 MHz output frequency
Stability: Stratum 3
Temperature Ranges: to -40º to +85º
C
C
Aging: <4.0 ppm for 20 years
Package:
1.0x 1.0x 0.52(25.4x25.4x13.2mm)
Output: HCMOS
Supply Voltage: +3.3 volts
For use with Semtech Chip ACS8510 SETS
SONET/SDH Network Timing Sources
Computer Telephony CT-BUS
The 8473 & 8500 have been optimized to work with
the Semtech Chip
ACS8510 SETS
to meet the
requirements of Bell Core specification GR-1244-
CORE.
The 8473 & 8500 have been designed to meet the
Holdover requirements for a Stratum 3 Clock source as
called out in GR-1244-CORE, per Table 3-1 as
described in Sections 5.2 and 9.1 when used with
ACS8510 SETS.
Note:
Other stability and output options are available.
technical information about additional Vectron OCXO
s
and Crystal Oscillators can be found on our web site at:
www.stratum3.com
Part Number:
Frequency:
Operating Temp Range:
Aging:
Stability vs Temperature:
vs Drift (24 hours):
Stability vs Supply:
Initial Accuracy @ +25º
C:
Supply Voltage:
Power Draw:
Output:
Symmetry (at 50% Vdd):
Rise/Fall Time (10-90%):
Short Term (Allan Variance):
Phase Noise:
(TYPICAL)
8473
(Stratum 3)
12.800 MHz
-40º to +85º
C
C
<4 ppm
for 20 years
±
280 ppb
± ppb
40
8500
(Stratum 3)
12.800 MHz
0º to +70º
C
C
<4 ppm
for 20 years
±
280 ppb
± ppb
40
± ppb per % change in Voltage
2
± ppm
1.5
+3.3 Vdc ±5%
<5W peak at turn on, <1.25W stabilized @ +25º
C
HCMOS
60/40 to 40/60, maximum
<10 nanoseconds
1x10
-11
/ second
Offset
100 Hz
1k Hz
10k Hz
100k Hz
Phase Noise
-130 dBc/Hz
-145 dBc/Hz
-150 dBc/Hz
-150 dBc/Hz
Shock:
Vibration - Sine:
Storage Temperature:
Thermal Shock:
Seal:
Size:
30G, 11 ms per MIL-STD-202, Method 213, Condition J
MIL-STD-202, Method 204, Condition A except 5G to 500 Hz
-55
o
C to +85
o
C
-55º to +85º per MIL-STD-202 Method 107 Condition A
C
C
MIL-STD-202, Method 112, Condition D
1.00" x 1.00" x 0.52" (25.40mm x 25.40mm x 13.20mm )
13.20
(.52)
.65
(.025)
STANDOFFS
(4 PLACES)
.8 Dia
(.031)
5 Places
25.7 max.
(1.01)
3
4
.254
.010)
(.750
(.720)
0.25
(.010)
2.8
(.11)
mm
(in.)
12.1
(.480)
19.05 .254
(.750 .010)
(1.01)
GND (760 Series)
N/C (760 Series)
Supply (Z5 Series)
19.05
(0.75)
9.525
(0.375)
OUT (Both Series)
2.54
(.100)
10.795
19.05
(0.75)
(.425)
6.35
(.250)
GND (Z5 Series)
25.4
(1.00)
13.97
(.550)
Supply (760 Series)
20.32
(.800)
GND (Z5 Series)
2.54
3.048 SQ
(.120
SQ )
N/C (Both Series)
(.100)
This precision oscillator contains a quartz crystal which is susceptible to damage if handled
roughly or Dropped. Transportation and handling should be carefully performed. ESD
precautions should be taken. When stored, units should be kept in conductive containers and
only handled at properly grounded workstations by operators using proper ESD procedures.
We recommend hand placing and hand soldering units into a PCB. The soldering tip and
temperature should be appropriate for 60/40 type solder. If cleaning is required then a manual
brush cleaning with an appropriate solvent is recommended. If lead trimming is required, it may
be performed either manually or by machine methods. In either case care should be given to
prevent mechanical shock to the unit.
8473
8500
(Stratum 3, -40º to +85º
C
C)
(Stratum 3,
0º to +70º
C
C)
www.vectron.com
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