IDT2309B-1HPGI8

Clock Generators, PLLs, Frequency Synthesizers Overview

The IDT2309B-1HPGI8 is a 3.3V zero-delay clock buffer featuring an on-chip phase-lock loop (PLL). It accepts one reference input and drives two banks of four low-skew outputs, totaling eight true outputs. The -1H suffix indicates high drive capability, supporting frequencies up to 133MHz with a typical cycle-to-cycle jitter of 50ps at 66MHz. It operates within commercial (0°C to +70°C) and industrial (-40°C to +85°C) temperature ranges. The device enters power-down mode without an input clock, drawing less than 25µA.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Zero-delay PLL clock distribution aligns output phase with the REF input
• High drive outputs support frequencies up to 133MHz
• Low skew (<250ps) and low jitter (<175ps cycle-to-cycle)
• Separate output enable control for Bank A and Bank B

Clock Generators, PLLs, Frequency Synthesizers Applications

• SDRAM clock distribution
• PC motherboards and workstations
• Telecom and datacom systems
• Critical path delay designs

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify package type TSSOP-16 and ordering suffix 'I' for Industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status as non-green parts have end-of-life dates. Check for lead-free specifications in current distributor listings.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the -1H variant for high drive requirements up to 133MHz. Ensure load capacitance matches design constraints: 30pF for <100MHz or 10pF for 100-133MHz. Use the CLKOUT pin for internal PLL feedback; maintain equal loading on all outputs for zero I/O delay.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This component belongs to the IDT2309B series of zero-delay clock buffers. It serves as a 16-pin version of the IDT2305B, providing similar functionality with specific packaging options. The -1H designation distinguishes it from standard drive versions by offering higher output current capabilities.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.