Data Sheet

FULL SIZE D.I.L.
M package
CRYSTAL
OSCILLATORS
ECLPS LVPECL 3.3V
M2980, M2984,
M2985, M2988
Thru-Hole / Gull Wing
Description
Commercial: 0º to 70ºC
10 MHz to 410 MHz
Generates complementary 3.3V LVPECL output waveform which
is optimized for low jitter for telecom applications
GUARANTEED SUPER-LOW JITTER
These oscillators use fundamental or overtone crystals to achieve jitter of less
than 10 ps RMS, and 35 ps pk-pk, from positive edge to positive edge.
Multiplying techniques are not used.
FEATURES
• Frequency range is 10-410 MHz
• Stability options from ±100 ppm to ±20 ppm
• Start up time less than 5 ms
• Guaranteed start-up with ramping DC Supply
• Internal bypass capacitor delivers superior waveform characteristics
• Complementary LVPECL outputs
• 5x7mm SMD version of this product is available in our R2980 models
These 3.3 volt thru hole LVPECL models
feature jitter of 35 ps, peak-to-peak from
positive edge to positive edge. This is
accomplished by using AT-cut crystals
operating in their fundamental or overtone
modes. No frequency doubling, tripling
or phase-lock-loop multipliers are used,
ensuring the very lowest jitter limited only
by the LVPECL logic.Two outputs support
differential drive at 50 ohms, assuring
signal integrity even when transmitted
over long paths.
TYPICAL APPLICATIONS
• Super-low jitter minimizes data loss and dropped packets in telecom and data networking
applications
LVPECL 3.3 V
DOT
DENOTES
PIN 1
DOT
DENOTES
PIN 1
.800 – .005
.800 – .005
.200 MAX
.215 MAX
.018 – .001
.060 TYP
.300 – .005
.008/025 .15 MIN
Model
Frequency
Stability
M2980
±100 ppm
M2984
±25 ppm
M2985
±50 ppm
M2988
±20 ppm
.200 MAX
.270 MAX
.018 – .001
.400
.600 – .005
Pin 1
.600 – .005
.100 – .005
Pin 7
Pin 1
Pin 7
.520 – .005
.300 –. 005
.500 – .005
.300 –. 005
.150
Pin 14
Pin 8
.250 MAX
GLASS INSULATORS (4)
Fig. 1
“M-1” Package
Pin 14
Pin 8
GLASS INSULATORS (4)
on .48 x .18 ctrs.
CONNECTIONS
Pin 1. LVPECL Output Complement
Pin 7. Ground, Case
Pin 8. LVPECL Output
Pin 14. VDD, 3.3 V
Fig. 2
“M-1” Package
with Gull Wing
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
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CRYSTAL OSCILLATORS
ECLPS LVPECL 3.3V
Thru-Hole /Gull Wing
FULL SIZE D.I.L.
M package
M2980, M2984,
M2985, M2988
Commercial: 0º to 70ºC
10 MHz to 410 MHz
ELECTRICAL SPECIFICATIONS
Frequency Range 10 MHz to 410 MHz
Frequency Stability Includes calibration at 25°C, operating temperature,
change of input voltage, change of load, shock and
vibration.
MIN
3.0
Input Voltage, VDD
Input Current, Maximum
Jitter, Positive Edge to Pos Edge,
RMS
Peak to peak
TYP
3.3
MAX
3.6
UNITS
volts
45
60
ma
5
26
10
35
ps
ps
Output Levels, with Output
returned to (VDD-2)V thru 50 Ω
“0” Level
(VDD-1.595) volts
“1” Level
(VDD-1.020)
Rise and Fall Times, with Output
returned to (VDD-2)V thru 50 Ω
volts
225
350
ps
45/55
percent
ENVIRONMENTAL SPECIFICATIONS
Temperature
Operating
0° to 70°C
Storage
-55° to +125°C
Shock – 1000 Gs, 0.35 ms, 1/2 sine wave, 3 shocks in each plane
Vibration – 10-2000 Hz of .06" d.a. or 20 Gs, whichever is less
Humidity – Resistant to 85° R.H. at 85°C
MECHANICAL SPECIFICATIONS
Leak – MIL STD 883, Method 1014, condition A1
Pins – Kovar, nickel plated with 60/40 solder coat
Bend Test – Will withstand two bends of 90° from reference
Header – Steel, with nickel plate
Case – Stainless steel, type 304
Marking – Printing is black epoxy ink
Resistance to Solvents – MIL STD 202, Method 215
(from 20 to 80%)
Symmetry at (VDD-1.3)V
Aging
First year
After first year
3
1
ppm
ppm/yr
50 ohm load
+3.3V
Termination, Load
Both outputs should be terminated with 50 ohms to (VDD-2) volts
MA
Power
Supply
1
IMF
7
GND
M2980
M2984
M2985
M2988
14
COAX or PCB with
50 ohm Characteristic
Impedance
DIFFERENTIAL
OUTPUT
(Vdd-2)V
50 ohm load
8
CASE IS
ON GROUND
TEST CIRCUIT FOR M2980, M2984, M2985, M2988
Fig. 3 Test Circuit
HOW TO ORDER
For Part Number, put package type before model number,
and add frequency in MHz, for example:
M 2984 - 410M
Fig. 4 Jitter for M2984-210M
Oscillogram showing jitter from leading
edge taken with Tek 11801B with SD22
Sampling Head. Peak-to-peak jitter is 31 ps;
RMS jitter is 4.089 ps. The distribution is
unimodal, because the crystal is operating
in the fundamental mode.
SS#
Rev.
M2980
A
M is full size DIL
ELECTRONICS
2984
is model
type
410M
frequency
in MHz
Leave blank
for straight leads
Add G for
gullwing
Unless customer-specific terms and conditions
are signed by an officer of MF Electronics, the
sale of this and all MF Electronics products are
subject to terms and conditions set forth at
www.mfelectronics.com/terms
10 Commerce Dr • New Rochelle NY 10801
International Sales: +1.914-712-2200 • USA Sales: +1.800.331.1236 • Fax: 914.712.2290 • www.mfelectronics.com • email:[email protected]
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