IDT2309NZ-1HDCI8

Clock Buffers, Drivers Overview

The IDT2309NZ-1HDCI8 is a nine-output, 3.3V clock buffer designed for high-speed clock distribution in mobile and desktop PC systems with SDRAM support. It operates at frequencies from DC to 133.33MHz with an input-to-output propagation delay of 8.7ns and output-to-output skew under 250ps. The device features high drive capability, low power consumption (less than 32mA at 66.6MHz), and multiple VDD/VSS pins for noise reduction. Packaged in a 16-pin SOIC, it supports industrial temperature ranges (-40°C to +85°C) and includes one additional output for external PLL feedback.

Clock Buffers, Drivers Feature Summary

• Nine outputs: eight drive DIMMs/SO-DIMMs, one for PLL feedback
• High drive capability with rise/fall times under 1.5ns
• Low power consumption (<32mA at 66.6MHz, unloaded)
• Industrial temperature range (-40°C to +85°C)

Clock Buffers, Drivers Applications

• Mobile PC system clock distribution
• Desktop PC systems with SDRAM support
• Driving two DIMMs or four SO-DIMMs

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'I' confirms the -40°C to +85°C industrial temperature rating. Confirm the 'DCI8' suffix indicates tape-and-reel packaging in a 16-pin SOIC package. Ensure compatibility with 3.3V logic levels and check for RoHS compliance status as per manufacturer documentation.

Clock Buffers, Drivers Selection Notes

Select this component when driving up to nine loads with low skew requirements. The -1H variant provides higher drive strength compared to standard versions. Ensure load capacitance does not exceed 15pF for frequencies above 100MHz. Verify that the single BUF_IN input meets system timing constraints.

Clock Buffers, Drivers Part Context

The IDT2309NZ belongs to the 2309 series of nine-output 3.3V clock buffers. The '-1H' designation specifies the high-drive version with faster transition times. Renesas Electronics acquired IDT, and this part remains relevant for legacy SDRAM-based system designs requiring robust clock distribution.

Clock Buffers, Drivers Replacement Considerations

Direct replacements include other 2309 series variants like IDT2309NZ-1HPGI8 (TSSOP package). Cross-vendor alternatives require matching the 1:9 ratio, 3.3V operation, and <250ps skew specifications.