SN74F27DR

Overview

The SN74F27DR is a triple 3-input positive-NOR gate integrated circuit manufactured by Texas Instruments. It belongs to the SN74F logic series, utilizing Schottky TTL technology for high-speed performance. The device operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 5 ns. It is housed in a 14-pin SOIC (Narrow) surface-mount package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Provides three independent 3-input NOR logic functions within a single package
• Utilizes Schottky TTL technology to achieve high-speed signal processing capabilities
• Designed for surface-mount assembly using a standard narrow SOIC footprint

Applications

• High-speed digital logic circuits requiring NOR operations
• Data routing and switching systems
• Industrial control logic interfaces

Procurement Notes

Verify the specific suffix 'D' confirms the SOIC-14 package type and tape-and-reel shipping configuration. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure input voltage levels match the specified 4.5 V to 5.5 V range for reliable operation.

Selection Notes

Select this component when Schottky TTL speed is required over standard 74-series alternatives. Compare against SN74HC27DR if lower power consumption or wider voltage ranges are necessary. Verify pin compatibility and thermal requirements for the target PCB layout design.

Part Context

This part is part of the SN74F family, known for fast switching speeds compared to standard 74LS devices. It serves as a direct functional replacement for other triple 3-input NOR gates in legacy designs while offering improved performance metrics suitable for modern high-frequency applications.

Replacement Considerations

SN74HC27DR offers similar functionality with CMOS characteristics.