SY89851 Series

Catalog

CLOCK BUFFER, FANOUT, TRANSLATOR, 3 GHZ TO 2 OUTPUTS, 3 V TO 3.6 V, 16 PINS, QFN-EP

Part	Type	Operating Temperature [Max]	Operating Temperature [Min]	Number of Circuits	Input	Differential - Input:Output [custom]	Differential - Input:Output [custom]	Voltage - Supply [Max]	Voltage - Supply [Min]	Ratio - Input:Output [custom]	Mounting Type	Frequency - Max [Max]	Package / Case	Output
Microchip Technology SY89851UMG-TR
Microchip Technology SY89851UMG-TR	Fanout Buffer (Distribution), Translator	85 °C	-40 °C	1	CML, LVDS, PECL			3.6 V	2.375 V	1:2	Surface Mount	4 GHz	16-MLF®, 16-VFQFN Exposed Pad	LVPECL

Catalog

Key Features

• + Precision 1:2, 800mV LVPECL fanout buffer

• + Low power consumption: 80mW typ. (2.5V)

• + – DC to >3GHz clock throughput

• + – <340ps propagation delay

• + – <180ps rise/fall time

• + – <20ps output-to-output skew

• + – <1psRMS random jitter

• + – <10psPP deterministic jitter

• + – <10ps PP total jitter (clock)

• + Unique, patented input termination and VT pin accepts DC- and AC-coupled inputs (CML, LVPECL, LVDS)

• + 100K LVPECL-compatible outputs

• + Power supply 2.5V ±5% or 3.3V ±10%

• + –40°C to +85°C industrial temperature range

• + Available in 16-pin (3mm x 3mm) MLF® package

Description

The SY89851U is a low jitter, low skew, high-speed 1:2 differential fanout buffer optimized for precision telecom and enterprise server distribution applications. The SY89851U distributes clock frequencies from DC to >3GHz, and data rates to 2.5Gbps guaranteed over temperature and voltage.The SY89851U differential input includes Micrel's unique, 3-pin input termination architecture that directly interfaces to any differential signal (AC- or DC-coupled) as small as 100mV (200mVpp) without any level shifting or termination resistor networks in the signal path. The outputs are 800mV, 100Kcompatible LVPECL with extremely fast rise/fall time guaranteed to be less than 180ps.The SY89851U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of –40°C to +85°C. The SY89851U is part of Micrel's high-speed, Precision Edge® product line.