CDC391DR

Overview

The CDC391DR is a fanout buffer manufactured by Texas Instruments, designed for clock distribution applications. It provides a single circuit with a 1:6 input-to-output ratio, converting TTL inputs to TTL outputs. The device supports a maximum frequency of 100 MHz and operates within a supply voltage range of 4.75 V to 5.25 V. It is housed in a 16-SOIC package (0.154 inch width) suitable for surface mount installation. The component functions without differential signaling capabilities and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Single circuit fanout buffer with 1:6 distribution ratio
• TTL input and output logic levels
• Maximum operating frequency of 100 MHz
• Operates on 4.75 V to 5.25 V supply voltage

Applications

• Clock signal distribution in digital systems
• Buffering TTL logic signals
• High-speed data transmission interfaces

Procurement Notes

Verify the specific ordering suffix 'DR' against the manufacturer's official documentation to confirm the exact packaging type, such as Tape & Reel or Bulk. Ensure that the selected variant matches the required reel quantity and handling specifications for the intended manufacturing process.

Selection Notes

Select this component when a 1:6 fanout buffer is required for TTL-compatible circuits. Confirm that the system power supply remains strictly within the 4.75 V to 5.25 V range to ensure proper operation. Verify that the 100 MHz frequency limit meets the application requirements and that the 16-SOIC package fits the PCB layout constraints.

Part Context

This part belongs to the category of clock buffers and drivers from Texas Instruments. It serves as a signal conditioning component for distributing clock signals across multiple loads while maintaining signal integrity at frequencies up to 100 MHz.

Replacement Considerations

Consult official cross-reference lists for compatible parts. Ensure any substitute maintains the 1:6 ratio, TTL compatibility, and 16-SOIC footprint.