CDC340DWR

Overview

The CDC340DWR is a single-channel fanout buffer manufactured by Texas Instruments, designed for clock distribution in digital systems. It accepts TTL input signals and provides eight TTL outputs with a 1:8 ratio. The device operates within a supply voltage range of 4.75V to 5.25V and supports a maximum frequency of 80 MHz. Packaged in a 20-SOIC surface-mount case (0.295" width), it functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Single circuit configuration providing one-to-eight signal distribution
• TTL-compatible input and output logic levels
• Maximum operating frequency of 80 MHz
• Standard 20-pin SOIC surface-mount package

Applications

• Clock signal distribution in synchronous digital systems
• Fanout buffering for control signals
• General-purpose logic level translation and distribution

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact packaging type, as 'DWR' typically indicates tape and reel but official datasheets should be consulted for definitive handling specifications. Ensure the application environment remains within the specified 0°C to 70°C operating temperature range to maintain performance reliability.

Selection Notes

Select this component when a single-input, eight-output TTL buffer is required for frequencies up to 80 MHz. It is suitable for applications needing standard 5V logic operation. Consider alternative packages if board space constraints differ from the 20-SOIC footprint or if industrial temperature ranges (-40°C to 85°C) are necessary.

Part Context

This part belongs to the family of clock buffers and drivers from Texas Instruments. It serves as a distribution element for timing signals, distinct from line drivers which focus on transmission line termination. The 20-SOIC package allows for automated surface-mount assembly processes.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pin compatibility and electrical parameters with potential alternatives before implementation.