SMD Oscillators

Series Number

Package

Description

Last Modified

491

4 Pad PCB

PECL Output

Jan. 01 2002

FEATURES

- Wave form symmetry of 40/60%

- PECL output

- Industry standard 4 Pad PCB SMD Package

- RoHs / Lead Free compliant

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

-

19.440 ~ 180.0 (Fund, Third, Fifth / UM-1)

MHz

-

0 ~ +70 (Std.) / -40 ~ 85 (Option)

°C

-

-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%)

-

-

80 max.

120 max.

mA

Aging

@ 25°C

±1 max.

PPM/Y

20% to 80% of Waveform

2 max.

nS

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)

%

-

10 max.

mS

Jitter

RMS

3.5 max.

ps

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Oscilent Corporation | 491 Series SMD Crystal Oscillators