CY29946AXC

Clock Buffers, Drivers Overview

The CY29946AXC is a low-voltage clock distribution buffer manufactured by Cypress Semiconductor Corp, now part of Infineon Technologies. It supports 2.5 V or 3.3 V operation with a maximum frequency of 200 MHz. The device features two LVCMOS/LVTTL-compatible inputs and ten LVCMOS/LVTTL-compatible outputs in a 32-pin TQFP package. It provides configurable 1× or 1/2× output ratios, three-state control, and a maximum output-to-output skew of 250 ps. The component operates within a commercial temperature range of 0°C to +70°C.

Clock Buffers, Drivers Feature Summary

• Supports 200 MHz clock frequencies with 2.5 V or 3.3 V supply voltages
• Features ten LVCMOS/LVTTL-compatible outputs capable of driving up to 20 clock lines
• Includes configurable 1× or 1/2× output divider options via DSEL(A:C) inputs
• Provides output three-state control via the MR/OE# input

Clock Buffers, Drivers Applications

• Nested clock tree distribution in synchronous systems
• Primary system clock generation and test clock provision
• Driving series or parallel terminated transmission lines

Clock Buffers, Drivers Procurement Notes

Verify that the CY29946AXC meets the required commercial temperature range (0°C to +70°C). Confirm the 32-TQFP package dimensions match the design footprint. Ensure compatibility with existing LVCMOS/LVTTL logic levels for both inputs and outputs before integration.

Clock Buffers, Drivers Selection Notes

Select the CY29946AXI variant if an industrial temperature range (-40°C to +85°C) is required. Consider the CY29946AXIT for tape-and-reel packaging needs. Verify that the 250 ps max skew specification satisfies the timing constraints of the target application.

Clock Buffers, Drivers Part Context

This component belongs to the CY29946 family of clock buffers. It is pin-compatible with MPC946 and MPC9446 devices. The datasheet indicates it is not recommended for new designs, suggesting potential obsolescence or replacement strategies should be evaluated.

Clock Buffers, Drivers Replacement Considerations

The CY29946AXI serves as the industrial temperature equivalent. The CY29946AXIT offers the same functionality in a tape-and-reel format. Direct pin-compatible alternatives include the MPC946 and MPC9446.