3.3 Volt Zero Delay Low Skew Buffer

The IDT2305 is a low phase noise, high-speed PLL based, low-skew zero delay buffer. Based on the IDT proprietary low jitter Phase Locked Loop (PLL) techniques, the device provides four low skew outputs at speeds up to 133 MHz at 3.3 V. The outputs can be generated from the PLL (for zero delay), or directly from the input (for testing), and can be set to tri-state mode or to stop at a low level. The PLL feedback is on-chip and is obtained from the CLKOUT pad. The IDT2305 is available in two different versions. The IDT2305-1 is the base part. The IDT2305-1H is a high drive version with faster rise and fall times.

Features

  • Clock outputs from 10 to 133 MHz
  • Zero input-output delay
  • Four low skew (<250 ps) outputs
  • Device-to-device skew <700 ps
  • Full CMOS outputs with 25 mA output drive capability at TTL levels
  • 5 V tolerant CLKIN
  • Tri-state mode for board-level testing
  • Advanced, low power, sub-micron CMOS process
  • Operating voltage of 3.3 V
  • Industrial temperature range available
  • Packaged in 8-pin SOIC

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
2305-1DCG Active DCG8 SOIC 8 C Yes Tube Availability
2305-1DCG8 Active DCG8 SOIC 8 C Yes Reel Availability
2305-1DCGI Active DCG8 SOIC 8 I Yes Tube Availability
2305-1DCGI8 Active DCG8 SOIC 8 I Yes Reel Availability
2305-1PGG Last Time Buy PGG8 TSSOP 8 C Yes Tube Availability
2305-1PGG8 Last Time Buy PGG8 TSSOP 8 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
2305 Datasheet Datasheet PDF 140 KB Aug 15, 2012
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 12, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PCNs & PDNs
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB Nov 29, 2017
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB Aug 24, 2017
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB Oct 5, 2006
PCN# : A-0605-05 AIT as Alternate Assembly Facility for SOIC/QSOP/SSOP/TSSOP/PDIP Product Change Notice PDF 298 KB May 24, 2006
Other
The IDT Consumer Products Advantage Overview PDF 4.01 MB Jun 30, 2017
The IDT Automotive Advantage Overview PDF 3.55 MB May 26, 2017
The IDT Communications Products Advantage Overview PDF 2.54 MB Feb 13, 2017
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016

Software & Tools

Title Other Languages Type Format File Size Date
2305 Hspice Model Model - HSPICE ZIP 88 KB Feb 27, 2001
2305 IBIS Model Model - IBIS ZIP 24 KB Sep 19, 2005

News & Additional Resources