CDC337DWR

Overview

The CDC337DWR is a single-channel clock buffer and driver manufactured by Texas Instruments, designed for high-speed digital systems. It functions as a fanout buffer with a 1:8 input-to-output ratio, distributing TTL input signals to eight CMOS outputs. The device supports a maximum operating frequency of 80 MHz and operates within a supply voltage range of 4.75 V to 5.25 V. It is housed in a 20-SOIC package (0.295 inch width) and is rated for an industrial temperature range of -40°C to +85°C. The component is supplied in Tape & Reel or Bulk packaging.

Feature Summary

• 1:8 Fanout Buffer Configuration
• TTL Input to CMOS Output Conversion
• 80 MHz Maximum Frequency
• 20-SOIC Surface Mount Package

Applications

• Clock distribution in synchronous digital systems
• Control signal distribution
• High-speed data acquisition systems

Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the Tape & Reel or Bulk packaging option required for the assembly process. Confirm that the 20-SOIC footprint matches the PCB design guidelines. Ensure the TTL input logic levels are compatible with the source signal generator before integration into the circuit design.

Selection Notes

Select this component when a single clock source needs to drive up to eight downstream loads requiring CMOS logic levels. The 80 MHz speed rating suits moderate-speed digital applications. Consider the 20-SOIC package constraints for board space. Verify that the 4.75V to 5.25V power supply rail is stable within the specified operating temperature range of -40°C to +85°C.

Part Context

The CDC337DWR belongs to the CDC337 family of clock drivers and buffers from Texas Instruments. This series provides solutions for distributing clock and control signals in digital systems. The 'DWR' suffix typically indicates the specific tape and reel packaging variant of the standard CDC337DW part, facilitating automated surface-mount assembly processes.

Replacement Considerations

The CDC337DW is a parameter-equivalent alternative available in tube packaging. Other members of the CDC33x family may offer similar functionality but require verification of pin compatibility and electrical specifications.