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

SY89844U

Status: In Production

Features:

  • Selects between two sources, and provides a glitch-free, stable LVDS output
  • wide operating frequency: 1kHz to >1.5GHz
  • <870ps In-to-Out tpd
  • <150ps tr/tf
  • Unique patent-pending input isolation design minimizes crosstalk
  • Fail-Safe Input prevents oscillations
  • <1psRMS random jitter
  • <1psRMS cycle-to-cycle jitter
  • <10psPP total jitter (clock)
  • <0.7psRMS MUX crosstalk induced jitter
  • Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
  • 325mV LVDS output swing
  • 2.5V +5% power supply
  • -40°C to +85°C industrial temperature range
  • Available in 24-pin (4mm x 4mm) QFN package
View More
Overview
Documents
Development Environment
RoHS Information
Add to Cart

Device Overview

Summary

The SY89844U is a low jitter LVDS, 2:1 input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89844U 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 100mV).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 100mV (200mVpp) without any level shifting or termination resistor networks in the signal path. The outputs are 325mV LVDS with fast rise/fall times guaranteed to be less than 150ps.The SY89844U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89844U is part of Micrel's high-speed, Precision Edge® product line.

Additional Features
    • Selects between two sources, and provides a glitch-free, stable LVDS output
    • Guaranteed AC performance over temperature and supply voltage:
      • wide operating frequency: 1kHz to >1.5GHz
      • <870ps In-to-Out tpd
      • <150ps tr/tf
    • Unique patent-pending input isolation design minimizes crosstalk
    • Fail-Safe Input prevents oscillations
    • Ultra-low jitter design:
      • <1psRMS random jitter
    • <1psRMS cycle-to-cycle jitter
    • <10psPP total jitter (clock)
    • <0.7psRMS MUX crosstalk induced jitter
    • Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
    • 325mV LVDS output swing
    • 2.5V +5% power supply
    • -40°C to +85°C industrial temperature range
    • Available in 24-pin (4mm x 4mm) QFN package
Parametrics
Name
Value
Product Type
Multiplexers
Description
2:01
Input
ANY
Supply Voltage
2.5V
Max Prop Delay (ps)
870
Icc (mA)
105
Max Within Device Skew (ps)
20
OE
False
RPE
True
FSI
True
Input Mux
False
Input EQ
False
Channels
Single
Output Type
LVDS
Output Voltage
2.5V

Documents

Jump to:

Data Sheets

  
619KB

User Guides


Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
SY89844UMG-TR
0.042200
0.204000
24
VQFN
4x4x0.9mm
NiPdAu
e4
SY89844UMG
0.042200
0.074667
24
VQFN
4x4x0.9mm
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