SN74LS14NS Equivalent & Substitute Parts

Part Overview

The SN74LS14NS is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in the 74LS logic series. This component is classified as discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The SN74LS14NS provides logic inversion with hysteresis characteristics suitable for signal conditioning applications requiring noise immunity.

Substiute Parts

SN74LS14NS

Texas InstrumentsIn Stock: 5094SN74LS14NS Datasheet

Current PartRFQ

SN74LS14NSR

Texas InstrumentsIn Stock: 5050SN74LS14NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS14NS is determined by the following critical parameters:

• Logic function: 6-channel inverter with Schmitt trigger
• Supply voltage range: 4.75V ~ 5.25V
• Output current specifications: 400µA (high), 8mA (low)
• Package type: 14-SOIC surface mount
• Operating temperature range: 0°C ~ 70°C
• RoHS and compliance certifications

The SN74LS14NSR qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS14NSR is the direct substitute for the SN74LS14NS. Both parts maintain identical electrical characteristics, thermal specifications, and compliance certifications. The SN74LS14NSR is preferred for new procurement due to its active product status. The packaging difference (Tube versus Cut Tape/Digi-Reel) does not affect functional compatibility and reflects standard distribution formats. Both parts satisfy ROHS3 compliance and REACH requirements for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS14NSR replace the SN74LS14NS in existing designs?

A: Yes. The SN74LS14NSR is electrically and mechanically identical to the SN74LS14NS. Pin configuration, voltage specifications, output current ratings, and propagation delay characteristics are equivalent. Direct substitution is valid for all applications.

Q: What is the difference between Tube and Cut Tape packaging?

A: Tube packaging contains loose components in a plastic tube, while Cut Tape and Digi-Reel packaging provides components on continuous tape with reel options. Both formats contain identical components. Packaging selection depends on assembly process requirements and order quantities.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74LS14NS and SN74LS14NSR are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: Why is the SN74LS14NS discontinued?

A: Product discontinuation at distribution channels reflects market availability decisions. The SN74LS14NSR remains active and serves as the current production equivalent.

Q: What are the input logic level thresholds?

A: The SN74LS14NS specifies input logic level low at 0.5V and high at 3.4V. The SN74LS14NSR specifies input logic level low at 0.5V and high at 1.9V. Both operate within the 4.75V ~ 5.25V supply range with Schmitt trigger hysteresis for noise immunity.