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SY89840U - Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer

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.

Features

  • Precision Edge ®.
  • Selects between two sources, and provides a glitch-free, stable LVPECL output.
  • Guaranteed AC performance over temperature and supply voltage:.
  • Wide operating frequency: 1kHz to >1.5GHz.
  • < 880ps In-to-Out tpd.
  • < 190ps tr/tf.
  • Unique patent-pending input isolation design minimizes crosstalk.
  • Fail-safe input prevents oscillations.
  • Ultra-low jitter design:.
  • 140fs RMS phase jitter (Typ).
  • 0.7psrms MUX crosstalk in.

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Datasheet Details

Part number SY89840U
Manufacturer Micrel Semiconductor
File Size 611.74 KB
Description Precision LVPECL Runt Pulse Eliminator 2:1 Multiplexer
Datasheet download datasheet SY89840U Datasheet
Additional preview pages of the SY89840U datasheet.

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Full PDF Text Transcription

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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).
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