SY89843U Datasheet Precision LVPECL Runt Pulse Eliminator 2:1 MUX

Manufacturer: Micrel Semiconductor

SY89843U precision lvpecl runt pulse eliminator 2:1 mux by Micrel Semiconductor - Datasheet Preview

Datasheet Details

Part number	SY89843U
Manufacturer	Micrel Semiconductor
File Size	769.36 KB
Description	Precision LVPECL Runt Pulse Eliminator 2:1 MUX
Download	SY89843U Download (PDF)

General Description

The SY89843U is a low jitter PECL, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications.

Unlike standard multiplexers, the SY89843U 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).

Overview

SY89843U Precision LVPECL Runt Pulse Eliminator 2:1 MUX with 1:2 Fanout and Internal Termination.

Key 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:.
65fs RMS phase jitter (Type).
0.7psRM.

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