CY29940AXC

Clock Buffers, Drivers Overview

The CY29940AXC is a low-voltage clock distribution buffer manufactured by Cypress Semiconductor Corp. It supports frequencies up to 200 MHz and operates with a supply voltage range of 2.375 V to 3.465 V. The device provides a 1:18 fanout ratio, accepting LVCMOS, LVPECL, or LVTTL inputs and generating LVCMOS or LVTTL outputs. Packaged in a 32-LQFP (7x7 mm) surface-mount case, it functions as a fanout buffer and multiplexer within the Clock Buffers and Drivers category.

Clock Buffers, Drivers Feature Summary

• Supports clock frequencies up to 200 MHz
• Provides 1:18 output fanout ratio
• Compatible with LVCMOS, LVPECL, and LVTTL input signals
• Operates on a single supply voltage between 2.375 V and 3.465 V

Clock Buffers, Drivers Applications

• Clock distribution in synchronous digital systems
• Buffering primary system clocks for multiple loads
• Nested clock tree architectures requiring high fanout

Clock Buffers, Drivers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Ensure storage conditions meet humidity requirements to prevent damage before soldering. Check for end-of-life notifications or obsolescence warnings from Infineon Technologies, the current owner of the Cypress portfolio.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:18 fanout is required for LVCMOS, LVPECL, or LVTTL sources. Ensure the design environment stays within the 0°C to 70°C operating temperature range. Verify that the PCB layout accommodates the 32-LQFP package dimensions. Compare against similar models like the CY29940AXIT if industrial temperature ratings are necessary instead of commercial ranges.

Clock Buffers, Drivers Part Context

This part belongs to the CY29940 series of clock buffers. Cypress Semiconductor was acquired by Infineon Technologies, which now manages the product line. The CY29940AXC is the commercial temperature variant, while suffixes like 'I' denote industrial temperature grades. These devices are designed for low-power, high-performance clock distribution applications.

Clock Buffers, Drivers Replacement Considerations

The CY29940AXIT serves as a functional replacement offering an extended -40°C to +85°C operating range. Other family members such as the CY29942 or CY29943 provide different fanout ratios but share similar electrical characteristics and pinouts.