Texas Instruments

SN74AS20DR  

Gates and Inverters

SN74AS20DR Description

The SN74AS20DR is a high-performance NAND gate logic IC from Texas Instruments, featuring two independent 4-input NAND gates. This device is part of the 74AS series, known for its advanced Schottky technology which provides high-speed performance and low power consumption. The SN74AS20DR operates within a supply voltage range of 4.5V to 5.5V and is designed for surface mount applications, making it suitable for compact and high-density PCB layouts.

SN74AS20DR Features

• Operating Temperature Range: The SN74AS20DR is specified to operate within a temperature range of 0°C to 70°C, ensuring reliable performance in a variety of ambient conditions.
• Max Propagation Delay: With a maximum propagation delay of 5ns at 5V and a maximum load capacitance of 50pF, the SN74AS20DR offers exceptionally fast switching times, making it ideal for high-speed digital circuits.
• Input Logic Levels: The device supports an input logic level of 0.8V for low and 2V for high, ensuring compatibility with a wide range of digital systems.
• Output Current: The SN74AS20DR can source up to 2mA and sink up to 20mA, providing robust output drive capabilities.
• Compliance and Packaging: The SN74AS20DR is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards. It is packaged in a tape and reel format (TR), facilitating automated assembly processes.
• Moisture Sensitivity Level: With an MSL of 1 (Unlimited), the SN74AS20DR is suitable for storage and handling in a wide range of environments without the need for special precautions.

SN74AS20DR Applications

The SN74AS20DR is well-suited for a variety of applications that require high-speed logic processing and compact design. Some specific use cases include:

• Digital Signal Processing: The fast switching times and low propagation delay make it ideal for processing digital signals in real-time applications.
• Control Systems: The robust output current capabilities and compatibility with a wide range of input logic levels make it suitable for use in control systems where reliability and speed are critical.
• Communication Circuits: The SN74AS20DR can be used in communication circuits to manage data flow and perform logical operations at high speeds.
• Consumer Electronics: The compact surface mount package and high-speed performance make it a good fit for consumer electronics where space and performance are key considerations.

Conclusion of SN74AS20DR

The SN74AS20DR from Texas Instruments is a high-performance NAND gate IC that offers significant advantages over similar models. Its fast propagation delay, robust output drive capabilities, and compliance with environmental standards make it a reliable choice for a wide range of applications. While the product is marked as obsolete, it remains a viable option for legacy systems and applications where its unique features are required. For new designs, engineers may consider exploring alternative models from Texas Instruments' extensive portfolio of logic ICs.

SN74AS20DR Documents

Download datasheets and manufacturer documentation for SN74AS20DR

Datasheets :

SN54/74(ALS,AS)20(A)      

HTML Datasheet :

SN54/74(ALS,AS)20(A)