MC74F827DW

Overview

The MC74F827DW is an octal buffer and line driver manufactured by onsemi, designed for high-speed digital signal transmission. It features a wide operating voltage range from 2.0 V to 6.0 V, ensuring compatibility with various logic families. The device provides balanced propagation delays of approximately 15 ns at 5 V, supporting data rates up to 33 MHz. It includes three-state outputs controlled by an output enable input, allowing multiple drivers to share a bus without interference. Packaged in a 20-pin SOIC-20W surface-mount case, it operates reliably across a temperature range of -55°C to +125°C.

Feature Summary

• Octal buffer architecture providing eight independent non-inverting channels for parallel data handling
• Three-state output capability enabled by a dedicated control input for efficient bus sharing
• Wide supply voltage operation supporting both 5V and 3.3V logic systems
• High-speed performance with balanced propagation delays suitable for demanding digital applications

Applications

• Clock buffering and distribution in high-speed digital systems
• Bus-oriented transmissions requiring isolated signal driving
• Memory address and data register interfacing
• Mobile communications equipment signal routing

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-20W package and tape-and-reel or tube availability as required. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure thermal management aligns with the specified junction temperature limits during operation. Cross-reference ordering information directly with onsemi authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this component when designing circuits requiring simultaneous driving of eight lines with minimal skew. Consider the three-state feature if the design involves shared data buses where multiple sources must drive the same lines. Evaluate the 2.0V to 6.0V supply range against system power constraints. Verify that the SOIC-20W footprint fits within the available PCB area and matches existing assembly capabilities.

Part Context

This part belongs to the 74F series of high-speed CMOS logic devices, known for faster switching speeds compared to standard TTL counterparts. The F827 variant specifically addresses the need for octal buffering in complex digital architectures. It serves as a critical interface component between microprocessors, memory arrays, and peripheral devices in industrial and consumer electronics.

Replacement Considerations

Direct substitutes include other octal buffers with three-state outputs such as the MC74F245 for bidirectional applications or MC74F374 for latching needs. Verify pinout compatibility and electrical characteristics before substitution. Alternative packages like TSSOP may require adapter solutions if space constraints differ.