Texas Instruments

SN74AS27DR  

Gates and Inverters

SN74AS27DR Description

The SN74AS27DR is a 3-input NOR gate logic IC designed by Texas Instruments, part of the 74AS series. This surface-mount device is packaged in a 14-pin SOIC format, making it suitable for compact and space-efficient applications. The IC operates within a supply voltage range of 4.5V to 5.5V and is specified for an operating temperature range of 0°C to 70°C. It features a maximum propagation delay of 5.5ns at 5V with a maximum load capacitance of 50pF, ensuring high-speed performance.

SN74AS27DR Features

• Logic Type: The SN74AS27DR is a NOR gate, which is a fundamental logic gate used in digital circuits. It provides a logical NOR operation across its three inputs.
• High-Speed Performance: With a maximum propagation delay of 5.5ns at 5V and 50pF, this IC is designed for high-speed applications where rapid signal processing is critical.
• Input Logic Levels: The input logic levels are well-defined, with a low level at 0.8V and a high level at 2V, ensuring compatibility with a wide range of digital systems.
• Output Current Capability: The IC can source 2mA and sink 20mA, making it suitable for driving various types of loads.
• Compliance and Safety: The SN74AS27DR is REACH unaffected and RoHS3 compliant, meeting environmental and safety standards for electronics manufacturing.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the device is suitable for a variety of manufacturing environments without the need for special handling to prevent moisture damage.

SN74AS27DR Applications

The SN74AS27DR is ideal for a range of applications where high-speed digital signal processing is required. Its compact size and surface-mount package make it suitable for use in:

• Digital Signal Processing: In systems where rapid signal processing and decision-making are necessary, such as in microcontrollers and digital signal processors.
• Control Systems: For implementing control logic in industrial and automotive applications where space is limited.
• Communication Systems: In digital communication circuits where high-speed signal integrity is crucial.
• Consumer Electronics: In devices such as smartphones, tablets, and other portable electronics where compact and efficient logic solutions are required.

Conclusion of SN74AS27DR

The SN74AS27DR is a versatile and high-performance NOR gate IC from Texas Instruments, offering a combination of speed, compactness, and compliance with industry standards. While it is now considered obsolete, its unique features and performance benefits make it a valuable component for legacy systems and specific applications where its characteristics are still relevant. For new designs, engineers may need to consider alternative, more modern solutions. However, for existing systems or specialized use cases, the SN74AS27DR remains a reliable choice.

SN74AS27DR Documents

Download datasheets and manufacturer documentation for SN74AS27DR