NOTICE - The following device(s) are recommended alternatives:

The 5V991A is a high fanout 3.3V PLL based clock driver intendedfor high performance computing and data-communications applications. Akey feature of the programmable skew is the ability of outputs to lead or lagthe REF input signal. The 5V991A has eight programmable skewoutputs in four banks of 2. Skew is controlled by 3-level input signals thatmay be hard-wired to appropriate HIGH-MID-LOW levels.When the GND/sOE pin is held low, all the outputs are synchronouslyenabled. However, if GND/sOE is held high, all the outputs except 3Q0 and3Q1 are synchronously disabled.Furthermore, when the VCCQ/PE is held high, all the outputs aresynchronized with the positive edge of the REF clock input. When VCCQ/PE is held low, all the outputs are synchronized with the negative edge ofREF. Both devices have LVTTL outputs with 12mA balanced drive outputs.

Features

  • REF is 5V tolerant
  • 4 pairs of programmable skew outputs
  • Low skew: 200ps same pair, 250ps all outputs
  • Selectable positive or negative edge synchronization:Excellent for DSP applications
  • Synchronous output enable
  • Output frequency: 3.75MHz to 85MHz
  • 2x, 4x, 1/2, and 1/4 outputs
  • 3 skew grades:IDT5V991A-2: tSKEW0<250psIDT5V991A-5: tSKEW0<500psIDT5V991A-7: tSKEW0<750ps
  • 3-level inputs for skew and PLL range control
  • PLL bypass for DC testing
  • External feedback, internal loop filter
  • 12mA balanced drive outputs
  • Low Jitter: <200ps peak-to-peak
  • Available in 32-pin PLCC Package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
5V991A-2JG Obsolete PLG32 PLCC 32 C Yes Tube
Availability
5V991A-2JG8 Obsolete PLG32 PLCC 32 C Yes Reel
Availability
5V991A-2JGI Obsolete PLG32 PLCC 32 I Yes Tube
Availability
5V991A-5JGI Obsolete PLG32 PLCC 32 I Yes Tube
Availability
5V991A-5JGI8 Obsolete PLG32 PLCC 32 I Yes Reel
Availability
5V991A-7JGI Obsolete PLG32 PLCC 32 I Yes Tube
Availability
5V991A-7JGI8 Obsolete PLG32 PLCC 32 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-831 The Crystal Load curve Application Note PDF 308 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-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-801 Crystal-High Drive Level Application Note PDF 109 KB
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB
PCNs & PDNs
PDN# : CQ-13-02 (R1) PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 601 KB
PDN# : CQ-13-02 Q2FY14 Quarter PDN for Manufacturing Discontinuance Product Discontinuation Notice PDF 327 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
PCN#: TB-0512-01 Reel Color Changed from Blue to Black Product Change Notice PDF 729 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
PCN#: A-0504-02, Transfer assembly facility IDT-Manila to OSE-Ph Product Change Notice PDF 47 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB
PCN#: A-0309-04, new mold compound G600 material Product Change Notice PDF 134 KB
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 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