74F401PC

Overview

The Fairchild Semiconductor 74F401PC is a CRC Generator Circuit belonging to the F/FAST series. It is designed for 1-bit operations using TTL logic technology. The device is housed in a CDIP14 package, which is a ceramic dual-in-line configuration with slim profile and glass-sealed construction. Key electrical parameters include a propagation delay of 15 ns. The circuit operates within a supply voltage range of 4.75 V to 5.25 V, with a nominal rating of 5 V. It supports eight selectable polynomials for cyclic redundancy check generation.

Feature Summary

• Supports eight selectable polynomials for flexible CRC generation
• Utilizes F/FAST series TTL technology for high-speed operation
• Features ceramic DIP packaging suitable for robust environments

Applications

• Data integrity verification in digital communication systems
• Error detection circuits in microprocessor interfaces
• Digital signal processing applications requiring checksum calculation

Procurement Notes

Verify the specific package variant when ordering, as the 74F401 is available in multiple form factors including plastic DIP and ceramic DIP. Confirm that the required polynomial selection matches the application needs, as this function is fixed per device instance. Check for end-of-life status or alternative sourcing options from authorized distributors, given the age of the F/FAST product line. Ensure compatibility with existing 5V TTL logic levels in the target design.

Selection Notes

Select the 74F401PC specifically when a ceramic DIP-14 package is required for environmental durability or thermal stability. This component is appropriate for designs utilizing the F/FAST logic family where 15 ns propagation delay is acceptable. Consider the 8 selectable polynomials feature if the system requires specific CRC standards without external logic. Compare against other CRC generators in the 74F series for pinout and speed compatibility.

Part Context

The 74F401 is part of Fairchild's F/FAST (Fast Advanced Schottky TTL) logic family, known for improved speed over standard 74S series devices. It serves as a specialized functional block for error checking, distinct from general-purpose gates or flip-flops. The PC suffix denotes the Plastic Dual-In-Line package, though datasheets often reference the broader CDIP14 ceramic specification for the core device characteristics. It complements other F-series components like the 74F402 CRC checker.