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SY89854U

Status: In Production

Features:

  • Precision 1:4, LVPECL fanout buffer
  • Low power: 137mW (2.5V typ)
  • DC- to >2GHz Clock fMAX
  • <340ps tpd
  • <180ps tr/tf time
  • <20ps max. skew
  • Ultra-low jitter design:
  • <1psrms random jitter
  • <10pspp deterministic jitter
  • <10pspp total jitter (clock)
  • Unique patent pending input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, PECL, LVDS)
  • Typical 800mV (100k) LVPECL output swing
  • Power supply 2.5V ±5% or 3.3V ±10%
  • Industrial temperature range -40°C to +85°C
  • Available in ultra-small (3mm x 3mm) 16-pin QFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The SY89854U is a 2.5V/3.3V precision, high-speed, fully differential 1:4 LVPECL fanout buffer. Optimized to provide four identical output copies with less than 20ps of skew and less than 10pspp total jitter, the SY89854U can process clock signals as fast as 2GHz.The differential input includes Micrel's unique, patent pending 3-pin input termination architecture that interfaces 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. For AC-coupled input interface applications, an on-board output reference voltage (VREF-AC) is provided to bias the center-tap (VT) pin. The outputs are 800mV LVPECL, with fast rise/fall times guaranteed to be less than 180ps.The SY89854U operates from a 2.5V ±5% supply or a 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89854U is part of Micrel's high-speed, Precision Edge® product line.

Additional Features
    • Precision 1:4, LVPECL fanout buffer
    • Low power: 137mW (2.5V typ)
    • Guaranteed AC performance over temperature and supply voltage:
      • DC- to >2GHz Clock fMAX
      • <340ps tpd
      • <180ps tr/tf time
      • <20ps max. skew
    • Ultra-low jitter design:
      • <1psrms random jitter
      • <10pspp deterministic jitter
      • <10pspp total jitter (clock)
    • Unique patent pending input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, PECL, LVDS)
    • Typical 800mV (100k) LVPECL output swing
    • Power supply 2.5V ±5% or 3.3V ±10%
    • Industrial temperature range -40°C to +85°C
    • Available in ultra-small (3mm x 3mm) 16-pin QFN package
Parametrics
Name
Value
Product Type
Fanout & Buffer and Drivers
Description
1:4
Input
ANY
Output
LVPECL
Supply Voltage
2.5/3.3
Max Freq (GHz)
3.5
Max Prop Delay (ps)
340
Icc (mA)
55
Max Within Device Skew (ps)
20
OE
False
RPE
False
FSI
False
Input Mux
False
Input EQ
False
Output Type
LVPECL

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY89854UMG-TR
0.021300
0.801700
16
VQFN
3x3x1.00mm
NiPdAu
e4
SY89854UMG
0.021300
0.050000
16
VQFN
3x3x1.00mm
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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