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8T49N285A-991NLGI8 +BOM

Clock Synthesizer / Jitter Cleaner

Produttore:

Renesas Electronics
ProduttorePart #:

8T49N285A-991NLGI8
Scheda dati:

8T49N285A-991NLGI8 Scheda dati (PDF)
Series:

8T49N285A
Height:

0.85 mm
Length:

8 mm
Tradename:

FemtoClock

8T49N285A-991NLGI8 Descrizione generale

The 8T49N285 has one fractional-feedback PLL that can be used as a frequency translator with jitter attenuation or a frequency synthesizer. It is equipped with six integer and two fractional output dividers, allowing the generation of up to eight different output frequencies, ranging from 8 kHz to 1 GHz. Output frequencies can be completely independent of the input frequencies, and up to three of these frequencies can be completely independent of each other.The eight outputs may select among LVPECL, LVDS, HCSL or LVCMOS output levels.

The 8T49N285 is ideal for use in a wide range of equipment, including 10G/40G/100G SONET/SDH and Ethernet network line cards, wireless base station baseband units, broadcast video, carrier Ethernet switches, OTN, or in test and measurement applications. For example, the 8T49N285 can be used in GbE/10GbE/100GbE Synchronous Ethernet line card applications in order to preserve the G.8262 compliance from the Synchronous Equipment Timing Source (SETS) on the timing card.

IDT’s third generation Universal Frequency Translator family also includes the 8T49N286 (4-in / 2-PLL / 8-out), and 8T49N287 (2-in / 2-PLL / 8-out), and the 8T49N242 (2-in / 1-PLL / 4-out). These devices are complemented by the 82P33714 and 82P33731 synchronous equipment timing source (SETS) for Synchronous Ethernet (SyncE) and 10G-40G SyncE, respectively.

To see other devices in this product family, visit the Universal Frequency Translators page.

Caratteristiche principali

Supports GR.1244 Stratum 3 stability in holdover mode
Compliant with the requirements outlined in Telcordia GR-253-CORE (SONET) & ITU-T G.813/G.8262 (SDH/SONET & SyncE) when paired with a Synchronous Equipment Timing Source (SETS ) device
Generates up to 8 LVPECL / LVDS/HCSL or 16 LVCMOS output clocks ranging from 8 kHz up to 1.0 GHz (diff), 8 kHz to 250 MHz (LVCMOS), that meet jitter limits for 10G up to 100G Ethernet and STM-256/OC-768 applications
- 0.3ps RMS (including spurs), 12 kHz to 20 MHz
- Accepts up to two LVPECL, LVDS, LVHSTL, HCSL or LVCMOS input clocks ranging from 8 kHz up to 875 MHz
- Auto and manual input clock selection with hitless switching
- Clock input monitoring, including support for gapped clocks
Phase-Slope Limiting and Fully Hitless Switching options to control output phase transients
Operates from a 10 MHz to 40 MHz fundamental-mode crystal
Register programmable through I2C / SPI or via external I2C EEPROM
8T49N285-998 “Boot from EEPROM”
8T49N285-999 “powers up disabled”
Supported by IDT Timing Commander Software

Specifiche

Product Category	Clock Synthesizer / Jitter Cleaner	Series	8T49N285A
Height	0.85 mm	Length	8 mm
Product Type	Clock Synthesizers / Jitter Cleaners	Subcategory	Clock & Timer ICs
Tradename	FemtoClock	Width	8 mm

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