SN74ALS20AN

Overview

The SN74ALS20AN is a dual 4-input positive-NAND gate integrated circuit manufactured by Texas Instruments. It belongs to the ALS logic series and utilizes bipolar technology with push-pull outputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of up to 12.5 ns at 5 V with 50 pF load capacitance. It features a low-level output current of 400 µA and a high-level output current of -8 mA. Designed for commercial use, it functions between 0°C and +70°C and is housed in a 14-pin PDIP package.

Feature Summary

• Contains two independent 4-input NAND logic gates
• Utilizes bipolar technology for push-pull output stages
• Supports standard TTL input voltage levels

Applications

• Digital logic signal processing
• Boolean function implementation in control circuits
• General-purpose switching applications

Procurement Notes

Verify the specific suffix 'AN' confirms the 14-PDIP through-hole package variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the catalog rating matches the intended operational environment requirements.

Selection Notes

Select this component when dual 4-input NAND functionality is required in a through-hole format. The ALS series offers higher speed than standard 74LS devices while maintaining lower power consumption. Verify that the 14-pin DIP footprint fits the target PCB layout constraints.

Part Context

This part is a member of the Texas Instruments SN74ALS20A family. It shares logical functionality with other variants but differs in packaging. The 'AN' designation specifically identifies the plastic dual-in-line package configuration suitable for breadboard or prototyping board insertion.

Replacement Considerations

SN74ALS20ANG4 and SN74ALS20ANE4 are confirmed lead-free replacements within the same product line.