The 87021I is a high performance ÷1/÷2 Differential-to-LVCMOS/LVTTL Clock Generator and a member of the family of High Performance Clock Solutions from IDT. The CLK, nCLK pair can accept most standard differential input levels. Guaranteed part-to-part skew characteristics make the 87021I ideal for those clock distribution applications demanding well defined performance and repeatability.

Features

  • Two single-ended LVCMOS/LVTTL outputs
  • One differential CLK, nCLK input pair
  • CLK, nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
  • Maximum output frequency: 250MHz
  • Additive phase jitter, RMS: 0.18ps (typical)
  • Output skew: 50ps (maximum)
  • Part-to-part skew: 450ps (maximum)
  • Propagation delay: 3.4ns (maximum)
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Availalbe in lead-free (RoHS 6) package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
87021AMILF Last Time Buy DCG8 SOIC 8 I Yes Tube
Availability
87021AMILFT Last Time Buy DCG8 SOIC 8 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
87021I Datasheet Datasheet PDF 223 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-845 Termination - LVCMOS Application Note PDF 62 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
PCNs & PDNs
PDN# : CQ-19-01(R1) Quarterly Market Declined PDN Product Discontinuation Notice PDF 1014 KB
PDN# : CQ-19-01 Quarterly Market Declined PDN Product Discontinuation Notice PDF 537 KB
PCN# : A1807-01 Gold wire to Copper Wire Product Change Notice PDF 32 KB
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# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 363 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 209 KB
Other
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB

Software & Tools

Title Other Languages Type Format File Size Date
87021i IBIS Model - IBIS ZIP 74 KB