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

SY89838U

Status: In Production

Features:

  • Selects between two clocks, and provides 8 precision, low skew LVDS output copies
  • 2:1 MUX input provides a glitch-free, stable LVDS output
  • Wide operating frequency: 1kHz to >1.5GHz
  • <150ps tr/tf
  • <40ps output-to-output skew
  • Unique patent-pending input isolation design minimizes crosstalk
  • Fail-safe input prevents oscillation
  • 150fs RMS phase jitter
  • <0.7psRMS MUX crosstalk-induced jitter
  • Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
  • 350mV LVDS output swing
  • Power supply 2.5V ±5%
  • -40°C to +85°C industrial temperature range
  • Available in 32-pin (5mm x 5mm) QFN package
View More
Overview
Documents
Development Environment
RoHS Information
Add To Cart

Device Overview

Summary

The SY89838U is a low jitter, low skew, high-speed 1:8 fanout buffer with a unique, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89838U 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 200mV). The SY89838U distributes clock frequencies from 1kHz to 1.5GHz, guaranteed, over temperature and voltage.

The differential input includes Micrel's unique, 3-pin input termination architecture that allows customers to interface to any differential signal (AC- or DC-coupled) as small as 200mV (400MvPP) without any level shifting or termination resistor networks in the signal path. The outputs are 350mV compatible LVDS with fast rise/fall times guaranteed to be less than 150ps.The SY89838U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. For applications that require 800mV LVPECL outputs, consider the SY89837U. The SY89838U is part of Micrel's high-speed, Precision Edge® product line.

Additional Features
    • Selects between two clocks, and provides 8 precision, low skew LVDS output copies
    • 2:1 MUX input provides a glitch-free, stable LVDS output
    • Guaranteed AC performance over temperature and supply voltage:
      • Wide operating frequency: 1kHz to >1.5GHz
      • <150ps tr/tf
      • <40ps output-to-output skew
    • Unique patent-pending input isolation design minimizes crosstalk
    • Fail-safe input prevents oscillation
    • Ultra-low jitter design:
      • 150fs RMS phase jitter
      • <0.7psRMS MUX crosstalk-induced jitter
    • Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
    • 350mV LVDS output swing
    • Power supply 2.5V ±5%
    • -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
2:8
Input
ANY
Output
LVDS
Supply Voltage
2.5
Max Freq (GHz)
1.5
Max Prop Delay (ps)
950
Icc (mA)
250
Max Within Device Skew (ps)
40
OE
False
RPE
True
FSI
True
Input Mux
True
Input EQ
False
Output Type
LVDS

Documents

Jump to:

Data Sheets

  
989KB

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
SY89838UMG
0.064100
0.230833
32
VQFN
5x5x0.9mm
NiPdAu
e4
SY89838UMG-TR
0.064100
0.214000
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.

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