LTC6954IUFF-4

Clock Buffers, Drivers Overview

The LTC6954IUFF-4 is a low phase noise clock distribution divider/driver featuring three LVDS/CMOS outputs. It operates on a single 3.15V to 3.45V supply within a 36-lead QFN package. Each output includes an individually programmable integer frequency divider (1–63) and delay (0–63 cycles). The device supports SPI control, EZSync synchronization, and jumper-selectable LVDS or CMOS logic levels.

Clock Buffers, Drivers Feature Summary

• Three independent outputs with programmable dividers (1–63) and delays (0–63)
• Jumper-selectable LVDS or CMOS output logic via OUTxSEL pins
• Low additive jitter: 21 fs RMS (LVDS, 7mA mode) at 622.08MHz input
• EZSync system for precise clock alignment across multiple devices

Clock Buffers, Drivers Applications

• Clocking high-speed/high-resolution ADCs and DACs
• Low jitter clock distribution networks
• Data acquisition systems requiring synchronized timing

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'IUFF-4' confirms the -40°C to 105°C temperature range and 36-QFN package. Confirm the '#PBF' designation indicates lead-free finish. Check current availability status as some variants may be discontinued.

Clock Buffers, Drivers Selection Notes

Select this variant for applications requiring three LVDS or CMOS outputs. Ensure the input frequency does not exceed 1.4GHz for LVDS operation. Verify power supply stability within the 3.15V–3.45V range to maintain specified phase noise performance.

Clock Buffers, Drivers Part Context

Part of the LTC6954 family, which includes variants with LVPECL outputs (-1), mixed LVPECL/LVDS (-2, -3), and all-LVDS/CMOS (-4). The IUFF-4 specifically provides the digital interface and output configuration for modern CMOS/LVDS compatible systems.

Clock Buffers, Drivers Replacement Considerations

LTC6954IUFF-4#TRPBF offers the same functionality in tape-and-reel packaging for automated assembly.