EMSL12L2H-78.125M
Series
RoHS Compliant (Pb-free) 2.5V 6 Pad 5mm x 7mm
Plastic SMD HCSL MEMS Oscillator
Frequency Tolerance/Stability
±100ppm Maximum over -20°C to +70°C
Duty Cycle
50 ±5(%)
RoHS
Pb
EMSL12 L 2 H -78.125M
Nominal Frequency
78.125MHz
Logic Control / Additional Output
Output Enable (OE) and Complementary Output
ELECTRICAL SPECIFICATIONS
Nominal Frequency
Frequency Tolerance/Stability
78.125MHz
±100ppm Maximum over -20°C to +70°C (Inclusive of all conditions: Calibration Tolerance at 25°C,
Frequency Stability over the Operating Temperature Range, Supply Voltage Change, Output Load Change,
1st Year Aging at 25°C, Reflow, Shock, and Vibration)
±1ppm First Year Maximum
+2.5Vdc ±0.125Vdc
65mA Maximum (Excluding Load Termination Current)
750mVdc Typical, 600mVdc Minimum
25mVdc Typical, 50mVdc Maximum
300pSec Typical, 350pSec Maximum (Measured over 20% to 80% of waveform)
50 ±5(%) (Measured at 50% of waveform)
50 Ohms to ground (Output and Complementary Output)
HCSL
Output Enable (OE) and Complementary Output
Vih of 70% of Vcc Minimum or No Connect to Enable Output and Complementary Output, Vil of 30% of Vcc
Maximum to Disable Output and Complementary Output (High Impedance)
60mA Maximum (OE) Without Load
0.2pSec Typical
2.0pSec Typical
1.5pSec Typical, 3.0pSec Maximum
20pSec Typical, 25pSec Maximum
10pSec Typical
1.7pSec Typical
0.8pSec Typical
0.7pSec Typical
10mSec Maximum
-55°C to +125°C
Aging at 25°C
Supply Voltage
Input Current
Output Voltage Logic High (Voh)
Output Voltage Logic Low (Vol)
Rise/Fall Time
Duty Cycle
Load Drive Capability
Output Logic Type
Logic Control / Additional Output
Output Control Input Voltage
Output Enable Current
Period Jitter (Deterministic)
Period Jitter (Random)
Period Jitter (RMS)
Period Jitter (pk-pk)
Period Jitter (Cycle to Cycle)
RMS Phase Jitter (Fj = 637kHz to
10MHz; Random)
RMS Phase Jitter (Fj = 1.5MHz to
22MHz; Random)
RMS Phase Jitter (Fj = 1.875MHz to
20MHz; Random)
Start Up Time
Storage Temperature Range
ENVIRONMENTAL & MECHANICAL SPECIFICATIONS
ESD Susceptibility
Flammability
Mechanical Shock
Moisture Resistance
Moisture Sensitivity Level
Resistance to Soldering Heat
Resistance to Solvents
Solderability
Temperature Cycling
Thermal Shock
Vibration
MIL-STD-883, Method 3015, Class 2, HBM 2000V
UL94-V0
MIL-STD-883, Method 2002, Condition G, 30,000G
MIL-STD-883, Method 1004
J-STD-020, MSL 1
MIL-STD-202, Method 210, Condition K
MIL-STD-202, Method 215
MIL-STD-883, Method 2003 (Six I/O Pads on bottom of package only)
MIL-STD-883, Method 1010, Condition B
MIL-STD-883, Method 1011, Condition B
MIL-STD-883, Method 2007, Condition A, 20G
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 8/11/2010 | Page 1 of 5
EMSL12L2H-78.125M
OUTPUT WAVEFORM & TIMING DIAGRAM
TRI-STATE INPUT
V
IH
V
IL
CLOCK OUTPUTS
V
OH
80%
50%
20%
V
OL
Q
OUTPUT DISABLE
(HIGH IMPEDANCE
STATE)
Q
t
PLZ
Fall
Time
Rise
Time
T
W
T
Duty Cycle (%) = T
W
/T x 100
t
PZL
Test Circuit for Tri-State and Complementary Output
Oscilloscope
Frequency
Counter
50 Ohms
Supply
Voltage
(V
DD
)
R
S
(Note 4)
Output
Probe 2
(Note 2)
Probe 1
(Note 2)
Current
Meter
Power
Supply
Voltage
Meter
0.01µF
(Note 1)
0.1µF
(Note 1)
Complementary
Output
Tri-State
No
Connect
Ground
R
S
(Note 4)
Switch
50
Ohms
Power
Supply
Note 1: An external 0.01µF ceramic bypass capacitor in parallel with a 0.1µF high frequency
ceramic bypass capacitor close (less than 2mm) to the package ground and supply voltage
pin is required.
Note 2: A low capacitance (<12pF), 10X attenuation factor, high impedance (>10Mohms), and high
bandwidth (>500MHz) passive probe is recommended.
Note 3: Test circuit PCB traces need to be designed for a characteristic line impedance of 50 ohms.
Note 4: A 10 ohm to 33 ohm series resistor is required to limit overshoot. Rs value is circuit layout dependant.
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 8/11/2010 | Page 3 of 5
EMSL12L2H-78.125M
Recommended Solder Reflow Methods
T
P
Critical Zone
T
L
to T
P
Ramp-up
Ramp-down
Temperature (T)
T
L
T
S
Max
T
S
Min
t
S
Preheat
t 25°C to Peak
t
L
t
P
Time (t)
Low Temperature Infrared/Convection 240°C
T
S
MAX to T
L
(Ramp-up Rate)
Preheat
- Temperature Minimum (T
S
MIN)
- Temperature Typical (T
S
TYP)
- Temperature Maximum (T
S
MAX)
- Time (t
S
MIN)
Ramp-up Rate (T
L
to T
P
)
Time Maintained Above:
- Temperature (T
L
)
- Time (t
L
)
Peak Temperature (T
P
)
Target Peak Temperature (T
P
Target)
Time within 5°C of actual peak (t
p
)
Ramp-down Rate
Time 25°C to Peak Temperature (t)
Moisture Sensitivity Level
5°C/second Maximum
N/A
150°C
N/A
60 - 120 Seconds
5°C/second Maximum
150°C
200 Seconds Maximum
240°C Maximum
240°C Maximum 1 Time / 230°C Maximum 2 Times
10 seconds Maximum 2 Times / 80 seconds Maximum 1 Time
5°C/second Maximum
N/A
Level 1
Low Temperature Manual Soldering
185°C Maximum for 10 seconds Maximum, 2 times Maximum.
High Temperature Manual Soldering
260°C Maximum for 5 seconds Maximum, 2 times Maximum.
www.ecliptek.com | Specification Subject to Change Without Notice | Rev B 8/11/2010 | Page 5 of 5
PCB设计
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