SN74LS14DG4 Equivalent & Substitute Parts

Part Overview

The SN74LS14DG4 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 part operates within a 4.75V to 5.25V supply voltage range and is housed in a 14-SOIC surface mount package. Identification of compatible alternatives ensures design continuity and component availability for production environments.

Substiute Parts

SN74LS14DG4

Texas InstrumentsIn Stock: 885SN74LS14DG4 Datasheet

Current PartRFQ

SN74LS14D

Texas InstrumentsIn Stock: 1952SN74LS14D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS14DG4 is determined by strict equivalence across the following critical parameters:

• Logic type and function: Inverter with Schmitt trigger inputs
• Circuit count: 6 channels with 1 input per channel
• Electrical specifications: Supply voltage 4.75V ~ 5.25V, output current 400µA high / 8mA low, input logic levels 0.5V low / 1.9V high, propagation delay 22ns @ 5V with 15pF load
• Package type: 14-SOIC surface mount
• Operating temperature range: 0°C ~ 70°C
• Compliance certifications: ROHS3 compliant, REACH unaffected

The SN74LS14D qualifies as a direct substitute based on identical electrical characteristics, logic configuration, and package specifications. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS14D is the recommended substitute for the discontinued SN74LS14DG4. Both parts are manufactured by Texas Instruments and maintain identical electrical performance, logic configuration, and package specifications. The SN74LS14D carries active product status, ensuring ongoing availability and supply chain support. Both parts meet ROHS3 compliance and REACH requirements, maintaining regulatory alignment for production environments. The substitution is electrically and mechanically transparent with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS14D be used as a direct replacement for the SN74LS14DG4?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical logic type, circuit count, electrical specifications, operating temperature range, and 14-SOIC package dimensions. The primary difference is product status and packaging format.

Q: What is the difference between the DG4 and D package designations?

A: The DG4 designation indicates a specific packaging format that is now discontinued. The D designation represents the active equivalent with tube packaging. The electrical and mechanical specifications remain identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels. No compliance trade-offs exist in this substitution.

Q: Will the SN74LS14D work in existing PCB designs without modification?

A: Yes. The 14-SOIC package dimensions are identical, and all electrical parameters match. No PCB layout or schematic changes are required.

Q: What is the supply voltage tolerance for both parts?

A: Both the SN74LS14DG4 and SN74LS14D operate within a 4.75V to 5.25V supply voltage range. This specification applies to both parts without variation.