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SY89847U

Status: In Production

Features:

  • Selects between two sources, and provides 5 precision LVDS copies
  • Prevents outputs from oscillating when input is invalid
  • DC-to >1.5GHz throughput
  • <1000ps Propagation Delay (IN-to-Q)
  • <210ps Rise/Fall times
  • 150fsRMS phase jitter (typ.)
  • <0.7psRMS MUX crosstalk induced jitter
  • Unique, patented MUX input isolation design minimizes adjacent channel crosstalk
  • Unique, patented internal termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
  • Wide input voltage range VCC to GND
  • 2.5V ±5% supply voltage
  • -40°C to +85°C industrial temperature range
  • Available in 32-pin (5mm x 5mm) QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The SY89847U is a 2.5V, 1:5 LVDS 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. The outputs are LVDS compatible with very fast rise/fall times guaranteed to be less than 210ps.The SY89847U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89847U is part of Micrel's high-speed, Precision Edge® product line.

Additional Features
    • Selects between two sources, and provides 5 precision LVDS 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
      • <1000ps Propagation Delay (IN-to-Q)
      • <210ps Rise/Fall times
    • Ultra-low jitter design:
      • 150fsRMS phase jitter (typ.)
      • <0.7psRMS MUX crosstalk induced jitter
    • Unique, patented MUX input isolation design minimizes adjacent channel crosstalk
    • Unique, patented internal termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
    • Wide input voltage range VCC to GND
    • 2.5V ±5% supply voltage
    • -40°C to +85°C industrial temperature range
    • Available in 32-pin (5mm x 5mm) QFN package
Parametrics
Name
Value
Product Type
Fanout & Buffer and Drivers
Description
2:5
Input
ANY
Output
LVDS
Supply Voltage
2.5
Max Freq (GHz)
1.5
Max Prop Delay (ps)
1000
Icc (mA)
90
Max Within Device Skew (ps)
20
OE
True
RPE
False
FSI
True
Input Mux
True
Input EQ
False
Output Type
LVDS

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY89847UMG-TR
0.064100
0.214000
32
VQFN
5x5x0.9mm
NiPdAu
e4
SY89847UMG
0.064100
0.230833
32
VQFN
5x5x0.9mm
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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