CRYSTAL OSCILLATORS
ECLPS PECL 5V
FULL SIZE D.I.L.
M package
M2910, M2954,
M2955, M2958
Thru-Hole / Gull Wing
Commercial: 0º to 70ºC
10 MHz to 410 MHz
Generates complementary 5V ECLPS PECL output waveform
optimized for low jitter for telecom applications.
FEATURES
•
Super low jitter output – 2 ps RMS typical
•
Frequency range is 10-410 MHz
•
Four stability choices to 20 ppm
•
Start up time less than 5 ms
•
Guaranteed start-up with ramping DC Supply
TYPICAL APPLICATIONS
•
High-speed data communications
Description
These 5 volt thru hole ECLPS PECL
models feature jitter of 20 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 sup-
ported by the ECLPS PECL logic. Two
outputs support differential drive at 50
ohms each, assuring signal integrity even
when transmitted over long paths. They
are compatible, and produce the same
waveshapes as our M2911 VCXOs.
They are available in the full size (M)
package with or without gull wing.
Four stability options are available
from ±100 ppm thru ±20 ppm.
ECLPS PECL 5V
DOT
DENOTES
PIN 1
DOT
DENOTES
PIN 1
Model
.800 – .005
Frequency
Stability
±100 ppm
±25 ppm
±50 ppm
±20 ppm
.800 – .005
M2910
M2954
.200 MAX
.270 MAX
.200 MAX
.215 MAX
.018 – .001
.060 TYP
.300 – .005
.400
.600 – .005
Pin 1
.100 – .005
Pin 7
.300 –. 005
.500 – .005
.150
Pin 14
Pin 8
.250 MAX
Pin 14
.600 – .005
Pin 1
.008/025 .15 MIN
.018 – .001
M2955
M2958
Pin 7
.520 – .005
.300 –. 005
Pin 8
GLASS INSULATORS (4)
on .48 x .18 ctrs.
GLASS INSULATORS (4)
Fig. 1
“M-1” Package
Fig. 2
“M-1” Package
with Gull Wing
CONNECTIONS
Pin 1. ECLPS PECL Output
Pin 7. Ground, Case
Pin 8. ECLPS PECL Output Complement
Pin 14. VDD, 5 V
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:sales@mfelectronics.com
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CRYSTAL OSCILLATORS
ECLPS PECL 5V
Thru-Hole /Gull Wing
Commercial: 0º TO 70ºC
10 MHz to 410 MHz
FULL SIZE D.I.L.
M package
M2910, M2954,
M2955, M2958
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.
Input Voltage, V
DD
Input Current,
Maximum
Output Levels,
with Output
returned to (VDD-2)V thru 50
Ω
“0” Level
“1” Level
(VDD-0.98)
225
350
(VDD-1.63) volts
volts
ps
MIN
4.75
TYP
5.0
MAX
5.25
70
UNITS
volts
ma
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
– Epoxy ink or laser engraved
Resistance to Solvents
– MIL STD 202, Method 215
Termination, Load
Both outputs should be terminated with 50 ohms to (VDD-2) volts
Rise and Fall Times,
with Output
returned to (VDD-2)V thru 50
Ω
(from 20 to 80%)
Jitter,
Positive Edge to Pos Edge,
RMS
Peak to peak
Symmetry
at (VDD-1.3)V
Aging
First year
After first year
2
14
3.5
20
45/55
ps
ps
percent
ppm
ppm/yr
3
1
50 ohm load
+5V
Power
Supply
GND
COAX or PCB with
50 ohm Characteristic
Impedance
(Vdd-2)V
8
MA
IMF
1
7
M2910
M2954
M2955
M2958
14
DIFFERENTIAL
OUTPUT
50 ohm load
CASE IS
ON GROUND
TEST CIRCUIT FOR M2910, M2954, M2955, M2958
Fig. 4 Test Circuit
HOW TO ORDER
For Part Number, put package type before model number,
and add frequency in MHz, for example:
M 2958 - 250M
Fig. 3 Jitter for M2954-155.52 M
Oscillogram showing jitter from leading
edge taken with Tek 11801B with SD22
Sampling Head. Peak-to-peak jitter is 16
ps; RMS jitter is 2.551 ps.
“M” is full size DIL
“2958”
is model
type
“250 M”
frequency
in MHz
Leave blank
for straight leads
Add “G” for
gullwing
SS#
M2910
Rev.
A
ELECTRONICS
10 Commerce Dr • New Rochelle NY 10801
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
International Sales: +1.914-712-2200
•
USA Sales: +1.800.331.1236
•
Fax: 914.712.2290
•
www.mfelectronics.com
•
email:sales@mfelectronics.com
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