SY89846U Series

Catalog

1:5 LVPECL FANOUT BUFFER W/ 2:1 FSI INPUT MUX 32 VQFN 5X5X0.9MM TUBE ROHS COMPLIANT: YES

Part	Mounting Type	Ratio - Input:Output	Number of Circuits	Frequency - Max [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Output	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Input	Supplier Device Package
Microchip Technology SY89846UMG
Microchip Technology SY89846UMG
Microchip Technology SY89846UMG	Surface Mount	2:5	1	2 GHz	3.6 V	2.375 V	Fanout Buffer (Distribution), Multiplexer	LVPECL	32-VFQFN Exposed Pad	85 °C	-40 °C	CML, LVDS, PECL	32-QFN (5x5)
Microchip Technology SY89846UMG-TR	Surface Mount	2:5	1	2 GHz	3.6 V	2.375 V	Fanout Buffer (Distribution), Multiplexer	LVPECL	32-VFQFN Exposed Pad	85 °C	-40 °C	CML, LVDS, PECL	32-QFN (5x5)
Microchip Technology SY89846UMG-TR
Microchip Technology SY89846UMG-TR

Catalog

Key Features

• + Selects between two inputs, and provides 5 precision LVPECL copies

• + Prevents outputs from oscillating when input is invalid

• + DC-to >1.5GHz throughput

• + <900ps Propagation Delay (IN-to-Q)

• + <250ps Rise/Fall times

• + 150fsRMS phase jitter (typ.)

• + <0.7psRMS MUX crosstalk induced jitter

• + Unique, patented MUX input isolation design minimizes adjacent channel crosstalk

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

• + Wide input voltage range. VCC to GND

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

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

• + Available in 32-pin (5mm x 5mm) QFN package

Description

The SY89846U is a 2.5/3.3V, 1:5 LVPECL fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe Input (FSI) protection prevents metastable output conditions when the selected input clock fails to a DC voltage (voltage between the pins of the differential input drops significantly below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that can interface 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, LVPECL with fast rise/fall times guaranteed to be less than 250ps.The SY89846U 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 SY89846U is part of Micrel's high-speed, Precision Edge® product line.