CDC208DWR

Overview

The CDC208DWR is a dual-channel clock buffer and driver manufactured by Texas Instruments. It provides two independent 1-to-4 fanout buffers, totaling eight outputs, designed for distributing clock signals in high-speed digital systems. The device operates with a maximum frequency of 60 MHz and accepts TTL inputs while providing CMOS outputs. It functions within a supply voltage range of 4.5 V to 5.5 V and supports an industrial operating temperature range from -40°C to +85°C. The component is housed in a 20-SOIC package.

Feature Summary

• Dual-channel architecture providing two independent 1:4 fanout buffers
• TTL input compatibility with CMOS output levels
• Maximum operating frequency of 60 MHz
• Wide supply voltage range of 4.5 V to 5.5 V

Applications

• Clock distribution networks in synchronous digital systems
• Fanout buffering for control signals
• High-speed data acquisition systems requiring signal integrity

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm packaging details such as tape and reel specifications or bulk quantities. Ensure that the selected variant matches the required RoHS compliance status and moisture sensitivity level for the intended assembly process. Cross-reference the part number with current availability lists to confirm active production status.

Selection Notes

Select this component when a dual-channel solution is required to drive multiple loads from a single source without external logic. The 1:4 ratio per channel allows for efficient expansion of clock trees. Consider the 60 MHz frequency limit and TTL input requirements to ensure compatibility with the upstream driver circuitry and system timing constraints.

Part Context

The CDC208 belongs to the family of low-power Schottky TTL clock drivers. It serves as a specialized buffer for expanding clock signals in complex digital designs. The DWR suffix indicates the surface-mount SOIC package variant, distinguishing it from through-hole or other package options within the same functional series.

Replacement Considerations

The CDC339DW is listed as a parameter-equivalent alternative. Verify pin compatibility and electrical specifications before substitution.