SN74ALS03BN

Overview

The SN74ALS03BN is a quadruple 2-input NAND buffer with open-collector outputs, belonging to the Texas Instruments Advanced Low-Power Schottky (ALS) logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum propagation delay of 18 ns at 5 V with a 50 pF load. The device provides a low-level output current capability of 24 mA and functions reliably across an operating temperature range of 0°C to +70°C. It is housed in a standard 14-pin Dual In-Line Package (PDIP-14) designed for through-hole mounting on printed circuit boards.

Feature Summary

• Features four independent 2-input NAND gates with open-collector outputs suitable for wired-AND configurations
• Delivers high-speed switching performance characteristic of the ALS logic series
• Provides robust low-level sink current capability for direct interface with higher-load circuits

Applications

• General-purpose digital logic buffering and signal inversion
• Wired-AND logic implementation in bus systems
• Interface driving for relays, lamps, or indicator loads via open-collector sinks

Procurement Notes

Verify the specific suffix 'BN' corresponds to the PDIP-14 package and commercial temperature grade during procurement. Confirm RoHS compliance status as manufacturing processes evolve. Ensure the supplier source is authorized to guarantee component authenticity and traceability. Check for any recent product change notices that may affect pinout or electrical specifications.

Selection Notes

Select this component when open-collector NAND functionality is required with moderate speed and high sink current drive. The ALS series offers a balance between power consumption and speed compared to standard TTL. Consider the PDIP-14 package constraints if PCB space allows for through-hole assembly. Evaluate thermal dissipation requirements given the 24 mA sink capability per gate.

Part Context

This part belongs to the SN74ALS03B family of quad NAND buffers. The 'ALS' designation indicates Advanced Low-Power Schottky technology, which improves speed-power product over earlier 74S series devices. The 'B' suffix typically denotes the commercial temperature range variant. This family serves as a foundational logic element in digital design architectures requiring reliable switching and fan-out capabilities.

Replacement Considerations

Compatible substitutes include SN74ALS03N and SN74ALS03AN, provided they match the PDIP-14 package and electrical characteristics. Verify that alternative sources maintain the same open-collector output structure and 24 mA sink rating. Cross-reference datasheets to ensure identical pinouts and timing parameters before integration.