The FCT3805B is a 3.3 volt, non-inverting clock driver built using advanced dual metal CMOS technology. The device consists of two banks of drivers, each with a 1:5 fanout and its own output enable control. The device has a "heartbeat" monitor for diagnostics and PLL driving. The MON output is identical to all other outputs and complies with the output specifications in this document. The FCT3805B offers low capacitance inputs with hysteresis. The FCT3805B is designed for high speed clock distribution where signal quality and skew are critical. The FCT3805B also allows single point-to-point transmission line driving in applications such as address distribution, where one signal must be distributed to multiple recievers with low skew and high signal quality. For more information on using the FCT3805B with two different input frequencies on bank A and B, please see AN-236.

Features

  • 0.5 MICRON CMOS Technology
  • Guaranteed low skew < 500ps (max.)
  • Very low duty cycle distortion < 1.0ns (max.)
  • Very low CMOS power levels
  • TTL compatible inputs and outputs
  • Inputs can be driven from 3.3V or 5V components
  • Two independent output banks with 3-state control
  • 1:5 fanout per bank
  • "Heartbeat" monitor output
  • VCC = 3.3V ± 0.3V
  • Available in SSOP, SOIC, and QSOP packages

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
49FCT3805BPYG Active PYG20 SSOP 20 C Yes Tube
Availability
49FCT3805BPYG8 Active PYG20 SSOP 20 C Yes Reel
Availability
49FCT3805BPYGI Active PYG20 SSOP 20 I Yes Tube
Availability
49FCT3805BPYGI8 Active PYG20 SSOP 20 I Yes Reel
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
49FCT3805B Datasheet Datasheet PDF 121 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-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PCNs & PDNs
PCN# : A1809-02 Add Alternate Assembly Location on select Packages Product Change Notice PDF 25 KB
PCN# : A1808-01 Transfer Assembly Location from Amkor Philippines for select pacakges Product Change Notice PDF 39 KB
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 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# : TB1503-01R1 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 333 KB
PCN# : TB1503-01 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 291 KB
PCN# : A1403-03 Gold wire to Copper wire Product Change Notice PDF 42 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
PCN# : A-0605-05 AIT as Alternate Assembly Facility for SOIC/QSOP/SSOP/TSSOP/PDIP Product Change Notice PDF 298 KB
PCN# A-0508-02: OSET Alternate Assembly Location for Green Product Change Notice PDF 18 KB
PCN# A-0504-02R2: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 38 KB
PCN#A-0504-02R1: Assembly Transfer IDT-Manila to OSE-Ph Product Change Notice PDF 16 KB
Downloads
49FCT3805B IBIS Model Model - IBIS ZIP 9 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
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB
High-Performance, Low-Phase Noise Clocks Buffers product brief Product Brief PDF 378 KB

Boards & Kits