SMD Oscillators
Series Number Package Description Last Modified
494 6 Pad PCB J-Lead PECL Output Jan. 01 2007
FEATURES
- Wave form symmetry of 40/60%
- PECL output
- Industry standard 6 Pad PCB J-Lead SMD Package
- RoHs / Lead Free compliant Rohs compliant smd oscillator
6 pad pcb base j lead crystal oscillator
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS CONDITIONS CHARACTERISTICS UNITS
Output Logic - Positive ECL Square Wave (PECL) -
Input Voltage (VDD) - 3.3 ±10%  5.0 ±10%  VDC
Frequency Range (fO) - 19.440 ~ 180.0 (Fund, Third, Fifth / UM-1) MHz
Operating Temperature (TOPR) - 0 ~ +70 (Std.) / -40 ~ 85 (Option) °C
Storage Temperature (TSTG) - -55 ~ +125 °C
Overall Frequency Stability - ±20 (0 ~ +70°C Only), ±25, ±50, ±100 max. PPM
(a) Frequency Tolerance Inclusive of Overall Stability -
(b) Temperature Stability Inclusive of Overall Stability (Operating Temperature) -
(c) Input Voltage Stability Inclusive of Overall Stability (VDD ±5%) -
(d) Load Stability Inclusive of Overall Stability (RL ±5%) -
Input Current (IDD) - 80 max. 120 max. mA
Aging @ 25°C ±1 max. PPM/Y
Rise Time (TR) 20% to 80% of Waveform 2 max. nS
Fall Time (TF) 20% to 80% of Waveform 2 max. nS
Output Voltage High "1" VOH PECL VDD - 1.025 min. VDC
Output Voltage Low "0" VOL PECL VDD - 1.620 max. VDC
Load - 50 Ohms
Duty Cycle 50% of Waveform 50 ±10 (Std.) / 50 ±5 (Option) %
Start-Up Time (TS) - 10 max. mS
Jitter RMS 3.5 max. ps
specification 6 pad pcb oscillator
crystal oscillator pad layout
PIN CONNECTIONS
#1 Complimentary Output
#2 Tri-State Enable Low
#3 Ground
#4 Output
#5 N.C.
#6 Vdd
PART NUMBER GUIDE
Series
Number		 Frequency Voltage Supply Option Frequency Tolerance & Stability (max.) Operating Temp. (°C) Duty Cycle Pin 1 Connection
494 - 28.0 M - 3 E N - T CO
Oscilent
SMD Oscillators
Enter your freq.
e.g. 28.0M =28.00 MHz
5 = 5VDC
3 = 3.3VDC
D =  ±100 PPM
E = ±50 PPM
F = ±25 PPM
G = ±20 PPM
Blank* = 0~+70
N = -40~+85
Blank*= 50±10%
T = -50±5%
CO = Complimentary Output
NOTE: - Deviations on all parameters available.  Please consult Oscilent for details.
DEFINITIONS: - Click on the characteristic names above, for definitions of the particular characteristic.
*STANDARDS: - "Blank" part number selections, indicate standard variables for the particular characteristic.
PACKAGING: - Add -TR for Tape/Reel. Click here for tape/reel specifications
Series No.:
494

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