SN74LS32DRE4 Equivalent & Substitute Parts

Part Overview

The SN74LS32DRE4 is a 4-channel OR gate logic integrated circuit manufactured by Texas Instruments in the 74LS series. This component features dual-input OR gate functionality in a 14-SOIC surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Active alternatives with identical electrical and mechanical specifications are available to ensure design continuity.

Substiute Parts

SN74LS32DRE4

Texas InstrumentsIn Stock: 1056SN74LS32DRE4 Datasheet

Current PartRFQ

SN74LS32DR

Texas InstrumentsIn Stock: 9717SN74LS32DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS32DRE4 is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel OR gate with 2 inputs per channel
• Electrical specifications: 4.75V ~ 5.25V supply voltage, 400µA/8mA output current, 22ns propagation delay
• Input logic levels: 0.8V low threshold, 2V high threshold
• Package format: 14-SOIC surface mount configuration
• Compliance: ROHS3 compliance and MSL Level 1 rating

The SN74LS32DR qualifies as a direct substitute based on identical electrical characteristics, logic configuration, and package specifications. The primary distinction is product status: the SN74LS32DRE4 is discontinued, while the SN74LS32DR remains in active production.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS32DR is the appropriate substitute for the discontinued SN74LS32DRE4. Both components are manufactured by Texas Instruments and maintain identical electrical performance, logic configuration, and package specifications. The SN74LS32DR is currently in active production status with higher inventory availability (9700 pcs vs. 1037 pcs), ensuring supply chain continuity. Both parts carry ROHS3 compliance and MSL Level 1 certification, meeting regulatory and environmental requirements. Pin-for-pin compatibility and functional equivalence are confirmed across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS32DR directly replace the SN74LS32DRE4 in existing designs?

A: Yes. The SN74LS32DR is a direct pin-for-pin and functional equivalent. All electrical parameters, logic specifications, and package dimensions are identical. No circuit modifications are required.

Q: What is the difference between SN74LS32DRE4 and SN74LS32DR?

A: The primary difference is product status. The SN74LS32DRE4 is discontinued, while the SN74LS32DR remains in active production. The packaging designation differs (DRE4 vs. DR), but electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with the 14-SOIC package?

A: No. Both parts use the identical 14-SOIC (0.154", 3.90mm Width) surface mount package. PCB footprints, reflow profiles, and assembly processes remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN74LS32DRE4 and SN74LS32DR are ROHS3 compliant with MSL Level 1 rating. REACH status is unaffected for both components.

Q: What is the operating temperature range for these parts?

A: Both components operate across 0°C to 70°C. This specification applies to both the discontinued and active versions.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Supply voltage (4.75V ~ 5.25V), output current (400µA/8mA), input logic levels (0.8V low, 2V high), and propagation delay (22ns @ 5V, 15pF) are identical across both parts.