Data Sheet

FULL SIZE D.I.L.
M package
CRYSTAL OSCILLATORS
ECLPS PECL 5V
M2910, M2954,
M2955, M2958
Thru-Hole / Gull Wing
Description
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
These 5 volt thru hole ECLPS PECL
models feature jitter of 20 ps, peak-topeak 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 supported 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
.800 – .005
.800 – .005
.200 MAX
.215 MAX
.018 – .001
.060 TYP
.300 – .005
.008/025 .15 MIN
.200 MAX
.270 MAX
Model
Frequency
Stability
M2910
±100 ppm
M2954
±25 ppm
M2955
±50 ppm
M2958
±20 ppm
.018 – .001
.400
.600 – .005
Pin 1
.600 – .005
.100 – .005
Pin 7
Pin 1
Pin 7
.300 –. 005
.520 – .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.
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:[email protected]
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CRYSTAL OSCILLATORS
ECLPS PECL 5V
Thru-Hole /Gull Wing
FULL SIZE D.I.L.
M package
M2910, M2954,
M2955, M2958
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
4.75
Input Voltage, VDD
TYP
5.0
Input Current, Maximum
MAX
5.25
UNITS
volts
70
ma
“0” Level
(VDD-1.63) volts
(VDD-0.98)
Rise and Fall Times, with Output
returned to (VDD-2)V thru 50 Ω
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
volts
225
350
ps
2
14
3.5
20
ps
ps
45/55
percent
(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
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
Output Levels, with Output
returned to (VDD-2)V thru 50 Ω
“1” Level
ENVIRONMENTAL SPECIFICATIONS
Temperature
Operating
0° to 70°C
Storage
-55° to +125°C
3
1
Termination, Load
Both outputs should be terminated with 50 ohms to (VDD-2) volts
ppm
ppm/yr
50 ohm load
+5V
MA
Power
Supply
1
IMF
7
GND
M2910
M2954
M2955
M2958
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 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.
SS#
Rev.
M2910
A
“M” is full size DIL
ELECTRONICS
“2958”
is model
type
“250 M”
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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