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ManufacturerMicrochip
SeriesSY89840U

The SY89840U is a low jitter PECL, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications

Datasheets

  • Download » Datasheet PDF, 609 Kb, File published: Nov 11, 2015
    SY89840U Data Sheet
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    SY89840U
    Precision LVPECL Runt Pulse Eliminator 2:1
    Multiplexer General Description
    The SY89840U is a low jitter PECL, 2:1 differential input
    multiplexer (MUX) optimized for redundant source
    switchover applications. Unlike standard multiplexers,
    the SY89840U unique 2:1 Runt Pulse Eliminator (RPE)
    MUX prevents any short cycles or “runt” pulses during
    switchover. In addition, a unique Fail-Safe Input
    protection prevents metastable 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
    input 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
    output is 800mV, 100K compatible LVPECL with fast
    rise/fall times guaranteed to be less than 190ps.
    The SY89840U operates from a 2.5V В±5% or 3.3V
    В±10% supply and is guaranteed over the full industrial
    temperature range of –40°C to +85°C. The SY89840U is ...

Prices

Status

SY89840UMGSY89840UMG-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

SY89840UMGSY89840UMG-TR
PackageVQFNVQFN
Pins1616

Parametrics

SY89840UMGSY89840UMG-TR
Description2:012:01
Fail-Safe Input, FSIYesYes
Input TypeANYANY
Operating Temperature Range, °C-40 to +85-40 to +85
Output Frequency, Max22
Output TypeLVPECLLVPECL
Propagation Delay, Max880880
Supply Voltage, V2.5/3.3V2.5/3.3V

Eco Plan

SY89840UMGSY89840UMG-TR
RoHSCompliantCompliant

Moldel Line

Series: SY89840U (2)

Manufacturer's Classification

  • Clock and Timing > Clock and Data Distribution > Multiplexers

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