SN74LS32DE4 Equivalent & Substitute Parts

Part Overview

The SN74LS32DE4 is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The functional characteristics of this OR gate—including logic operation, electrical performance, and package form factor—define the substitution criteria for compatible alternatives.

Substiute Parts

SN74LS32DE4

Texas InstrumentsIn Stock: 908SN74LS32DE4 Datasheet

Current PartRFQ

SN74LS32DR

Texas InstrumentsIn Stock: 9717SN74LS32DR Datasheet

DirectRFQ

SN74LS32D

Texas InstrumentsIn Stock: 884SN74LS32D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS32DE4 is determined by strict equivalence across the following parameters:

• Logic function: 4-channel 2-input OR gate operation
• Electrical specifications: Supply voltage 4.75V ~ 5.25V, output current 400µA/8mA, input logic levels 0.8V/2V, propagation delay 22ns @ 5V/15pF
• Package form factor: 14-SOIC surface mount
• Compliance: ROHS3 compliant, MSL 1

Parts meeting all these criteria are classified as direct substitutes. Variations in product status (active vs. discontinued) and packaging format (tape/reel vs. bulk) do not affect functional equivalence but may impact availability and procurement logistics.

Parameter Comparison

Engineering Selection Recommendations

SN74LS32DR is the primary substitute for SN74LS32DE4. Both parts are electrically and mechanically identical across all specified parameters. SN74LS32DR maintains active product status and is available in Cut Tape and Digi-Reel packaging formats, ensuring supply chain continuity. Both parts carry ROHS3 compliance and MSL 1 rating.

SN74LS32D is a secondary substitute meeting all electrical and mechanical equivalence criteria. This part is discontinued at DiGi Electronics, similar to the original SN74LS32DE4, and should be selected only when SN74LS32DR availability is constrained.

All three parts are functionally interchangeable within circuits designed for the 74LS32 logic family and require no design modifications for substitution.

Frequently Asked Questions (FAQ)

Q: Can SN74LS32DR directly replace SN74LS32DE4 without circuit modification?

A: Yes. Both parts are electrically and mechanically identical. All electrical parameters, logic operation, supply voltage range, output current ratings, input logic levels, propagation delay, operating temperature range, and 14-SOIC package dimensions are equivalent. No circuit redesign is required.

Q: What is the difference between SN74LS32DE4 and SN74LS32DR?

A: The parts are functionally identical. The primary difference is product status and packaging format. SN74LS32DE4 is discontinued at DiGi Electronics, while SN74LS32DR is active and available in Cut Tape and Digi-Reel packaging. Both meet ROHS3 compliance and MSL 1 specifications.

Q: Why is SN74LS32D listed as a substitute if it is also discontinued?

A: SN74LS32D meets all electrical and mechanical equivalence criteria and is included for reference in applications where inventory exists. However, SN74LS32DR is the recommended substitute due to active product status and confirmed availability.

Q: Are there any package or pinout differences between these substitutes?

A: No. All three parts use identical 14-SOIC surface mount packaging with 0.154" width and 3.90mm dimensions. Pinout and lead configuration are identical, enabling direct PCB-level substitution.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected for all parts.