The 2308 is a high-speed phase-lock loop (PLL) clock multiplier. It is designed to address high-speed clock distribution and multiplication applications. The zero delay is achieved by aligning the phase between the incoming clock and the output clock, operable within the range of 10 to 133MHz. The 2308 has two banks of four outputs each that are controlled via two select addresses. By proper selection of input addresses, both banks can be put in tri-state mode. In test mode, the PLL is turned off, and the input clock directly drives the outputs for system testing purposes. In the absence of an input clock, the 2308 enters power down, and the outputs are tri-stated. In this mode, the device will draw less than 25uA. The 2308 is available in six unique configurations for both prescaling and multiplication of the Input REF Clock. (See available options table.) The PLL is closed externally to provide more flexibility by allowing the user to control the delay between the input clock and the outputs. The 2308 is characterized for both Industrial and Commercial operation.

Features

  • Phase-Lock Loop Clock Distribution for Applications ranging from 10MHz to 133MHz operating frequency
  • Distributes one clock input to two banks of four outputs
  • Separate output enable for each output bank
  • External feedback (FBK) pin is used to synchronize the outputs to the clock input
  • Output Skew <200 ps
  • Low jitter <200 ps cycle-to-cycle
  • 1x, 2x, 4x output options (see table): - IDT2308-1 1x - IDT2308-2 1x, 2x - IDT2308-3 2x, 4x - IDT2308-4 2x - IDT2308-1H, -2H, and -5H for High Drive
  • No external RC network required
  • Operates at 3.3V VDD
  • Available in SOIC and TSSOP packages

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
2308-1DCG Active DCG16 SOIC 16 C Yes Tube
Availability
2308-1DCG8 Active DCG16 SOIC 16 C Yes Reel
Availability
2308-1DCGI Active DCG16 SOIC 16 I Yes Tube
Availability
2308-1DCGI8 Active DCG16 SOIC 16 I Yes Reel
Availability
2308-1HPGG Active PGG16 TSSOP 16 C Yes Tube
Availability
2308-1HPGG8 Active PGG16 TSSOP 16 C Yes Reel
Availability
2308-1HPGGI Active PGG16 TSSOP 16 I Yes Tube
Availability
2308-1HPGGI8 Active PGG16 TSSOP 16 I Yes Reel
Availability
2308-2DCG Active DCG16 SOIC 16 C Yes Tube
Availability
2308-2DCG8 Active DCG16 SOIC 16 C Yes Reel
Availability
2308-2DCGI Active DCG16 SOIC 16 I Yes Tube
Availability
2308-2DCGI8 Active DCG16 SOIC 16 I Yes Reel
Availability
2308-4DCG Last Time Buy DCG16 SOIC 16 C Yes Tube
Availability
2308-4DCG8 Last Time Buy DCG16 SOIC 16 C Yes Reel
Availability
2308-4DCGI Last Time Buy DCG16 SOIC 16 I Yes Tube
Availability
2308-4DCGI8 Last Time Buy DCG16 SOIC 16 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
2308 Datasheet Datasheet PDF 255 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
AN-229: Zero Delay Buffers Application Note PDF 120 KB
AN-82 Clock Distribution with Guaranteed Skew Application Note PDF 214 KB
PCNs & PDNs
PDN#: CQ-19-04 Product Discontinuance Notice Product Discontinuation Notice PDF 1010 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# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB
PCN# : A1403-03 Gold wire to Copper wire Product Change Notice PDF 42 KB
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB
PDN# : U-12-03R4 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 72 KB
PDN# : U-12-03R3 Product Discontinuation Notice PDF 72 KB
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB
PCN# : A1208-06 Changed of Assembly Location and Crystal Product Change Notice PDF 1.06 MB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 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#: TB-0504-01, Transfer Test & Backend from IDT-Manila to IDT Product Change Notice PDF 35 KB
PCN # L-0501-03 Die Revision Change from CD/CD4 to Z Product Change Notice PDF 156 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB
PCN # A-0406-07Rev.1, Qualify OSE-Taiwan for SSOP & TSSOP Product Change Notice PDF 21 KB
PCN # A-0406-06 Qualify OSE Philippines for SOIC Product Change Notice PDF 100 KB
PCN#:A-0401-01, new m/c G600 & 8290 d/a material Product Change Notice PDF 196 KB
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB
PCN#: G-0303-04, new m/c G700 & 8290 d/a material Product Change Notice PDF 130 KB
PCN Addendum # L0203-10R1 Fab 2 to Fab 4 Transfer Product Change Notice PDF 110 KB
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB
PCN# L0203-10 Fab Transfer from Fab 2 to Fab 4 Product Change Notice PDF 27 KB
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 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
2308_8 IBIS Model Model - IBIS ZIP 14 KB
2308_12 IBIS Model Model - IBIS ZIP 14 KB
2308_8 IBIS Model - IBIS ZIP 14 KB
2308_12 IBIS Model - IBIS ZIP 15 KB
2308 Hspice Model Model - HSPICE ZIP 89 KB