| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Nominal Frequency | 1.000MHz to 155.520MHz |
The specified reference or "center" frequency of the oscillator. Typically specified in megahertz (MHz)or kilohertz (kHz). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Frequency Tolerance/Stability | (Inclusive of all conditions: Calibration Tolerance at 25°C, Frequency Stability over the Operating Temp. Range, Supply Voltage Change, Output Load Change, First Year Aging @25°C, Shock, and Vibration)
±100ppm Maximum (Standard)
±50ppm Maximum
±25ppm Maximum
±20ppm Maximum |
This "inclusive" specification is the amount of frequency deviationfrom the center frequency associated with a set of operatingconditions. These conditions include: Operating Temperature Range,Supply Voltage, and Output Load. This parameter is specified with amaximum and minimum frequency deviation, expressed in percent (%)or parts per million (ppm). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Operating Temperature Range | 0°C to +70°C (Standard)
-40°C to +85°C (Optional) |
The maximum and minimum temperatures that the oscillator device can be exposed to during oscillation. Over thistemperature range, all of the specified device operatingparameters are guaranteed. |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Supply Voltage (VDD) | 5.0VDC ±10% |
The DC input voltage necessary for oscillator operation, specified involts. |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Input Current | 50mA Maximum (Unloaded) |
The amount of current consumption by an oscillator from the powersupply, typically specified in milliamps (mA). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Output Voltage Logic High (VOH) | 2.4VDC Minimum with TTL Load (IOH=-16mA)
VDD-0.4VDC Minimum with HCMOS Load (IOH=-16mA) |
Defined as the Output Voltage Logic High or "Logic 1" (Figure 1 in oscillator glossary of terms). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Output Voltage Logic Low (VOL) | 0.4VDC Maximum with TTL Load (IOL=+16mA)
0.5VDC Maximum with HCMOS Load (IOL=+16mA) |
Defined as the Output Voltage Logic Low or "Logic 0" (Figure 1 in oscillator glossary of terms). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Duty Cycle | 50 ±10(%) (Standard) Measured at 1.4VDC with TTL Load or at 50% of waveform with HCMOS Load from 1MHz to 70MHz. Measured at 50% of waveform above 70MHz. 50 ±5(%) (Optional) Measured at 50% of waveform. |
The measure of output waveform uniformity. This term, also referredto as symmetry, is a measurement of the time that the outputwaveform is in a logic high state, expressed as a percentage (%).This parameter is measured at a specified voltage threshold or at apercentage of the output waveform amplitude (Figure 1 in the oscillator glossary of terms). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Rise Time/Fall Time | Measured over 0.8VDC to 2.0VDC with TTL load or from 20% to 80% of waveform with HCMOS load. 6nSec Maximum from 1.000MHz to 70.000MHz
4nSec Maximum from 70.001MHz to 155.520MHz |
The Rise Time, measured in nanoseconds (nSec), is defined as thetransition time from an output logic low to an output logic high.Conversely, the Fall Time, also measured in nanoseconds (nSec), isdefined as the transition time from an output logic high to an outputlogic low. This transition time is measured at specified voltagethresholds or at specified percentages of the output waveformamplitude (Figure 1 in the oscillator glossary of terms). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Load Drive Capability | 10 TTL Load or 50pF HCMOS Load Maximum from 1.000MHz to 70.000MHz
5 TTL Load or 15pF HCMOS Load Maximum from 70.001MHz to 155.520MHz |
The maximum load the oscillator can drive specified in terms of thenumber of gates or the type of load circuit (Figures 2, 3 and 4 in oscillator glossary of terms). |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Aging (at 25°C) | ±5ppm/year Maximum |
The systematic change in frequency with time due to internal changes in the crystal. Aging is often expressed as a maximum value in parts per million per year (ppm/yr). The rate of aging is typically greatest during the first 30 to 60 days after which time the aging rate decreases. The following factors effect crystal aging: adsorption and desorption of contamination on the surfaces of the quartz, stress relief of the mounting and bonding structures, material outgassing, and seal integrity. |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Storage Temperature | -55°C to +125°C |
The minimum and maximum temperatures that the device can be stored or exposed to when in a non-oscillation state. After exposing or storing the device at the minimum or maximum temperatures for a length of time, all of the operating specifications are guaranteed over the specified Operating Temperature Range. |
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| Output Control Function | Tri-State Enable High |
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| Input Voltage | VIH of 2.2VDC or greater or No Connection to enable output. VIL of 0.8VDC or less to disable output (High Impedance State). |
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| Jitter | Absolute: ±250pSec Maximum, ±100pSec Typical
One Sigma: ±50pSec Maximum, ±30pSec Typical |
| 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> |
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram"> Start Up Time | 10mSec Maximum |
The specified time from oscillator power-up to the time the oscillatorreaches steady state oscillation. |
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EH25 Data Sheet
