SN74LS40N

Inverter Gates Overview

The SN74LS40N is a dual 4-input positive NAND buffer manufactured by Texas Instruments. It belongs to the LS (Low-power Schottky) logic family and is housed in a 14-pin PDIP package. The device operates within a supply voltage range of 2V to 5.5V and features a maximum quiescent current of 2 µA. It supports an operating temperature range from 0°C to 70°C, providing reliable logic functions for digital designs.

Inverter Gates Feature Summary

• Dual 4-input positive NAND buffer configuration
• Low-power Schottky (LS) logic technology
• Fast switching performance

Inverter Gates Applications

• Counters
• Decoders
• Combinational logic circuits

Inverter Gates Procurement Notes

Verify the manufacturer source carefully, as listings may indicate New Old Stock (NOS) or Rochester Electronics distribution rather than direct Texas Instruments production. Confirm the specific package type is 14-pin DIP and check for RoHS compliance status, as some variants are leaded. Ensure the supply voltage and temperature ranges match your system requirements before purchase.

Inverter Gates Selection Notes

Select this component when a dual 4-input NAND function is required in Low-power Schottky logic. It is suitable for applications needing fast switching speeds with low power consumption. Consider the 14-pin DIP package for through-hole mounting needs. Verify compatibility with the target supply voltage range of 2V to 5.5V.

Inverter Gates Part Context

This part is part of the standard 74LS series of TTL logic gates. It provides basic NAND functionality with four inputs per gate. The SN74LS40N is commonly used in legacy digital systems where through-hole packaging and established LS logic characteristics are preferred over newer CMOS technologies.

Inverter Gates Replacement Considerations

Check for equivalent parts from other manufacturers offering dual 4-input NAND buffers in LS logic. Verify pinout compatibility and electrical specifications such as supply voltage and propagation delay.