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SY89846U Datasheet LVPECL 1:5 Fanout

Manufacturer: Micrel Semiconductor

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Datasheet Details

Part number SY89846U
Manufacturer Micrel Semiconductor
File Size 764.59 KB
Description LVPECL 1:5 Fanout
Download SY89846U Download (PDF)

General 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.

Overview

SY89846U 1.5GHz Precision, LVPECL 1:5 Fanout with 2:1 MUX and Fail Safe Input with Internal Termination Precision Edge®.

Key Features

  • Precision Edge®.
  • Selects between two inputs, and provides 5 precision LVPECL copies.
  • Fail-Safe Input.
  • Prevents outputs from oscillating when input is invalid.
  • Guaranteed AC performance over temperature and supply voltage:.
  • DC-to >1.5GHz throughput.
  • < 900ps Propagation Delay (IN-to-Q).
  • < 250ps Rise/Fall times.
  • Ultra-low jitter design:.
  • 150fs RMS phase jitter (Typ).
  • 0.7psRMS MUX crosstalk induced jitter.
  • Unique, paten.

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