This website uses cookies. By using this site, you consent to the use of cookies. For more information, please take a look at our Privacy Policy.

Images are for reference only,

See Technical Specifications

8440259EKI-45LFT

Clock Synthesizer / Jitter Cleaner FemtoClock Crystal LVCMOS-to-LVDS

Manufacturer:

Renesas Electronics
Mfr.Part #:

8440259EKI-45LFT
Datasheet:

8440259EKI-45LFT Datasheet (PDF)
Series:

8440259EK
Height:

0.9 mm
Length:

5 mm
Moisture Sensitive:

Yes

Email: [email protected]

Skype: live:.cid.ab6b29428937b76

Tel: +852 95804164

8440259EKI-45LFT General Description

The 8440259I-45 is a nine output synthesizer optimized to generate Gigabit and 10 Gigabit Ethernet clocks. Using a 25MHz, 18pF parallel resonant crystal, the device will generate 156.25MHz, 125MHz and 3.90625MHz clocks with mixed LVDS and LVCMOS/ LVTTL output levels. The 8440259I-45 uses IDT's 3RD generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Ethernet jitter requirements. The 8440259I-45 is packaged in a small, 5mm x 5mm VFQFN package that is optimum for applications with space limitations.

Key Features

One differential LVDS output at 156.25MHz or 125MHz Four differential LVDS outputs at 125MHz Three LVCMOS/LVTTL single-ended outputs at 125MHz One LVCMOS/LVTTL single-ended output at 3.90625MHz
Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input and PLL bypass from a single select pin
VCO range: 560MHz - 690MHz
RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.45ps (typical), LVDS outputs
RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.45ps (typical), Q0, nQ0 output
Full 3.3V supply mode
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package

Specifications

Product Category	Clock Synthesizer / Jitter Cleaner	Series	8440259EK
Height	0.9 mm	Length	5 mm
Moisture Sensitive	Yes	Product Type	Clock Synthesizers / Jitter Cleaners
Factory Pack Quantity	2500	Subcategory	Clock & Timer ICs
Tradename	FemtoClock	Width	5 mm
Part # Aliases	8440259I-45