SY89464 Series

Catalog

2:1 RPE MUX W/ 1:10 LVPECL FANOUT 44 VQFN 7X7X0.9MM T/R ROHS COMPLIANT: YES

Part	Number of Circuits	Supplier Device Package	Input	Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Output	Frequency - Max [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Ratio - Input:Output [custom]	Ratio - Input:Output [custom]	Package / Case
Microchip Technology SY89464UMY-TR	1	44-MLF® (7x7)	CML, LVDS, PECL	Multiplexer	3.6 V	2.375 V	LVPECL	2 GHz	Surface Mount	85 °C	-40 °C	10	2	44-MLF®, 44-VFQFN Exposed Pad
Microchip Technology SY89464UMG	1	44-MLF® (7x7)	CML, LVDS, PECL	Multiplexer	3.6 V	2.375 V	LVPECL	2 GHz	Surface Mount	85 °C	-40 °C	10	2	44-MLF®, 44-VFQFN Exposed Pad
Microchip Technology SY89464UMY	1	44-MLF® (7x7)	CML, LVDS, PECL	Multiplexer	3.6 V	2.375 V	LVPECL	2 GHz	Surface Mount	85 °C	-40 °C	10	2	44-MLF®, 44-VFQFN Exposed Pad
Microchip Technology SY89464UMG TR	1	44-MLF® (7x7)	CML, LVDS, PECL	Multiplexer	3.6 V	2.375 V	LVPECL	2 GHz	Surface Mount	85 °C	-40 °C	10	2	44-MLF®, 44-VFQFN Exposed Pad

Catalog

Key Features

• + Selects between two sources, and provides 10 precision LVPECL copies

• + Wide operating frequency: 1kHz to >1.5GHz

• + <1100ps In-to-Out tpd

• + <220ps tr/tf

• + Unique, patent-pending MUX input isolation design minimizes adjacent channel crosstalk

• + Fail-Safe Input prevents oscillations

• + Ultra-low jitter design:

• + <1psRMS random jitter

• + <1psRMS cycle-to-cycle jitter

• + <10psPP total jitter (clock)

• + <0.7psRMS MUX crosstalk induced jitter

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

• + 800mV LVPECL output

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

• + Output enable

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

• + Available in 44-pin (7mm x 7mm) QFN package

Description

The SY89464U is a low jitter 1:10 LVPECL fanout buffer with a 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89464U's unique 2:1 Runt Pulse Eliminator (RPE) MUX prevents any short cycles or "runt" pulses during switchover. In addition, 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 below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that allows customers to 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, 100K-compatible LVPECL with fast rise/fall times guaranteed to be less than 220ps.The SY89464U 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 SY89464U is part of Micrel's high-speed, Precision Edge® product line.