Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

SY89112U

Status: In Production

Features:

  • Selects between 1 of 2 inputs, and provides 12 precision, low skew LVPECL output copies
  • DC to >2GHz throughput
  • <550ps propagation delay CLK-to-Q
  • <220ps rise/fall time
  • <25ps output-to-output skew
  • 50fsRMS phase jitter (typ.)
  • <0.7psRMS crosstalk induced jitter
  • Unique, patent-pending input termination and VT pin accepts DC-coupled and AC-coupled differential inputs
  • Unique, patent-pending 2:1 input MUX provides superior isolation to minimize channel-to-channel crosstalk
  • 800mV, 100K LVPECL output swing
  • Power supply 2.5V +5% or 3.3V +10%
  • Industrial temperature range -40°C to +85°C
  • Available in 44-pin (7mm x 7mm) QFN package
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

The SY89112U is a low-jitter, low-skew, high-speed LVPECL 1:12 differential fanout buffer optimized for precision telecom and enterprise server distribution applications. The input includes a 2:1 MUX for clock switchover application. Unlike other multiplexers, this input includes a unique isolation design to minimize channel-to-channel crosstalk. The SY89112U distributes clock frequencies from DC to >2GHz guaranteed over temperature and voltage. The SY89112U incorporates a synchronous output enable (EN) so that the outputs will only be enabled/disabled when they are already in the LOW state. This reduces the chance of generating "runt" clock pulses.The SY89112U differential input includes Micrel's unique, patent-pending 3-pin input termination architecture that directly 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, an on-board output reference voltage (VREF-AC) is provided to bias the center-tap (VT) pin. The outputs are 800mV, 100K-compatible LVPECL with fast rise/fall times guaranteed to be less than 220ps.The SY89112U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89112U is part of Micrel's high-speed, Precision Edge® product line.

Additional Features
    • Selects between 1 of 2 inputs, and provides 12 precision, low skew LVPECL output copies
    • Guaranteed AC performance over temperature and voltage:
      • DC to >2GHz throughput
      • <550ps propagation delay CLK-to-Q
      • <220ps rise/fall time
      • <25ps output-to-output skew
    • Ultra-low jitter design:
      • 50fsRMS phase jitter (typ.)
    • <0.7psRMS crosstalk induced jitter
    • Unique, patent-pending input termination and VT pin accepts DC-coupled and AC-coupled differential inputs
    • Unique, patent-pending 2:1 input MUX provides superior isolation to minimize channel-to-channel crosstalk
    • 800mV, 100K LVPECL output swing
    • Power supply 2.5V +5% or 3.3V +10%
    • Industrial temperature range -40°C to +85°C
  • Available in 44-pin (7mm x 7mm) QFN package
Parametrics
Name
Value
Product Type
Fanout & Buffer and Drivers
Description
2:12
Input
ANY
Output
LVPECL
Supply Voltage
2.5/3.3
Max Freq (GHz)
3
Max Prop Delay (ps)
550
Icc (mA)
95
Max Within Device Skew (ps)
25
OE
False
RPE
False
FSI
False
Input Mux
True
Input EQ
False
Output Type
LVPECL

Documents

Jump to:

Data Sheets

  
899KB

User Guides


Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY89112UMY-TR
0.127600
0.620478
44
VQFN
7x7x0.9mm
Matte Tin
e3
SY89112UMY
0.127600
0.722685
44
VQFN
7x7x0.9mm
Matte Tin
e3
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.

Buy from Microchip

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy