SN74LS05DRE4 Equivalent & Substitute Parts

Part Overview

The SN74LS05DRE4 is a 6-channel inverter logic IC with open collector outputs, manufactured by Texas Instruments in the 74LS series. This component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates within a 4.75V to 5.25V supply voltage range and is designed for standard TTL logic applications requiring inversion with open collector drive capability.

Substiute Parts

SN74LS05DRE4

Texas InstrumentsIn Stock: 961SN74LS05DRE4 Datasheet

Current PartRFQ

SN74LS05DR

Texas InstrumentsIn Stock: 2288SN74LS05DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LS05DRE4 is determined by strict equivalence across the following critical parameters:

• Logic type and function (6-channel inverter with open collector output)
• Electrical specifications (4.75V ~ 5.25V supply, 8mA output current, 32ns propagation delay)
• Input logic thresholds (0.8V low, 2V high)
• Package type (14-SOIC surface mount)
• Compliance certifications (ROHS3, REACH Unaffected)

The SN74LS05DR meets all these criteria as a direct parametric equivalent, differing only in product status (active vs. discontinued) and packaging format (Cut Tape & Digi-Reel vs. standard reel).

Parameter Comparison

Engineering Selection Recommendations

The SN74LS05DR is the direct substitute for the SN74LS05DRE4. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The primary distinction is product status: the SN74LS05DRE4 is discontinued, while the SN74LS05DR remains in active production with higher inventory availability (2200 pcs vs. 943 pcs).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility for new designs and legacy system maintenance. The SN74LS05DR is available in Cut Tape and Digi-Reel packaging formats, providing flexibility for both prototype and production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS05DR be used as a direct replacement for the SN74LS05DRE4?

A: Yes. The SN74LS05DR is a parametric equivalent with identical electrical specifications, logic function, and package type. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The SN74LS05DRE4 is discontinued, while the SN74LS05DR is in active production. Both share the same 74LS05 base product number and are functionally identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1).

Q: Does the packaging format affect compatibility?

A: No. Both parts use the 14-SOIC surface mount package with identical dimensions (0.154", 3.90mm width). Packaging format differences (Cut Tape & Digi-Reel vs. standard reel) do not affect electrical or mechanical compatibility.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching logic type (6-channel inverter), open collector output configuration, supply voltage range (4.75V ~ 5.25V), output current (8mA), propagation delay (32ns), input logic thresholds, operating temperature range, and 14-SOIC package type.