CY29947AXCT

Clock Buffers, Drivers Overview

The CY29947AXCT is a low-voltage clock distribution buffer manufactured by Cypress Semiconductor Corp. It supports 2.5 V or 3.3 V operation with a maximum frequency of 200 MHz. The device features a 1:9 fanout ratio, accepting two LVCMOS/LVTTL-compatible inputs and providing nine LVCMOS/LVTTL-compatible outputs. It operates within a supply voltage range of 2.375 V to 3.63 V and an industrial temperature range of 0°C to 70°C. Packaged in a 32-TQFP (7x7 mm) surface-mount case, it includes synchronous output enable and three-state control capabilities.

Clock Buffers, Drivers Feature Summary

• 200 MHz clock support with 1:9 distribution ratio
• Dual LVCMOS/LVTTL compatible inputs for primary and test clocks
• Nine LVCMOS/LVTTL compatible outputs driving up to 18 traces
• Synchronous output enable eliminates glitching

Clock Buffers, Drivers Applications

• Nested clock trees in synchronous systems
• Primary system clock distribution
• Test clock routing

Clock Buffers, Drivers Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm tape-and-reel packaging versus bulk. Ensure the operating temperature range matches the industrial specification (0°C to 70°C) rather than commercial variants. Cross-reference the pinout with the official datasheet to confirm compatibility with existing PCB layouts.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:9 fanout is required with low skew performance. Verify that the input signals are LVCMOS or LVTTL compatible. Ensure the design utilizes series or parallel termination for the 50-ohm transmission lines driven by the outputs. Confirm power supply stability within the 2.375 V to 3.63 V range.

Clock Buffers, Drivers Part Context

This part belongs to the CY29947 family of clock buffers. It is functionally similar to the MPC947 and MPC9447, offering pin compatibility. The device is designed for demanding synchronous systems requiring precise clock distribution with minimal output-to-output skew.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers include MPC947 and MPC9447 due to pin compatibility.