The 551 is a low cost, high-speed single input to four output clock buffer. Part of IDT's ClockBlocksTM family, this is our lowest cost, small clock buffer. See the 552-02B for monolithic dual version of the 551 in a 20 pin QSOP. IDT makes many non-PLL and PLL based low skew output devices as well as Zero Delay Buffers to synchronize clocks. Contact IDT for all of your clocking needs.

Features

  • Low skew (250 ps) outputs
  • Pb-free packaging
  • Low cost clock buffer
  • Packaged in 8-pin SOIC
  • Input/Output clock frequency up to 160 MHz
  • Non-inverting output clock
  • Ideal for networking clocks
  • Operating Voltages of 3.3 and 5.0 V
  • Output Enable mode tri-states outputs
  • Advanced, low power CMOS process
  • Commercial and industrial temperature versions

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active SOIC 8 I Yes Tube
Availability
Active SOIC 8 I Yes Reel
Availability
Active SOIC 8 C Yes Tube
Availability
Active SOIC 8 C Yes Reel
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
551 Datasheet Datasheet PDF 235 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-804 IDT Clock Buffers Offer Low Additive Phase Jitter Application Note PDF 246 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
IDT Clock Buffers Offers Ultra Low Additive Phase Jitter Application Note PDF 1.28 MB
PCNs & PDNs
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PDN# : CQ-14-02R2 Product Discontinuation Notice PDF 549 KB
PDN# : CQ-14-02R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 545 KB
PDN# : CQ-14-02 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 544 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB
Downloads
551 3.3V IBIS Model Model - IBIS ZIP 4 KB
Other
Clock Distribution Overview 日本語 Overview PDF 217 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB