SN74ALS158DRE4 Equivalent & Substitute Parts

Part Overview

The SN74ALS158DRE4 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as obsolete, which necessitates identifying equivalent substitute components for ongoing production and maintenance applications. The multiplexer function remains consistent across equivalent parts, enabling direct functional replacement when electrical and mechanical parameters align.

Substiute Parts

SN74ALS158DRE4

Texas InstrumentsIn Stock: 1034SN74ALS158DRE4 Datasheet

Current PartRFQ

SN74ALS157ADR

Texas InstrumentsIn Stock: 2775SN74ALS157ADR Datasheet

Parametric EquivalentRFQ

SN74ALS158D

Texas InstrumentsIn Stock: 1110SN74ALS158D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS158DRE4 is determined by strict equivalence across the following parameters:

• Circuit configuration (4 x 2:1 multiplexer topology)
• Output current specifications (400µA high, 8mA low)
• Supply voltage range (4.5V ~ 5.5V single supply)
• Operating temperature range (0°C ~ 70°C)
• Package type (16-SOIC surface mount)
• Electrical compliance (ROHS3, REACH Unaffected)

The substitute parts listed maintain identical electrical characteristics and mechanical compatibility. Differences in product status (active vs. obsolete) and packaging format (Tape & Reel vs. Tube) do not affect functional equivalence but may influence procurement and handling procedures.

Parameter Comparison

Engineering Selection Recommendations

Both SN74ALS157ADR and SN74ALS158D are active product alternatives to the obsolete SN74ALS158DRE4. Selection between these substitutes should be based on procurement requirements and packaging format availability:

SN74ALS157ADR is supplied in Tape & Reel format, suitable for high-volume automated assembly operations. SN74ALS158D is supplied in Tube format, appropriate for lower-volume applications or manual assembly processes. Both parts maintain full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment with current environmental standards.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS157ADR and SN74ALS158D be used interchangeably with SN74ALS158DRE4?

A: Yes. Both substitute parts maintain identical electrical specifications, output current ratings, supply voltage range, operating temperature range, and 16-SOIC package dimensions. Functional compatibility is complete.

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

A: Tape & Reel packaging is optimized for automated pick-and-place assembly in high-volume manufacturing. Tube packaging is used for manual handling and lower-volume applications. The electrical and mechanical properties of the component remain unchanged.

Q: Why is the SN74ALS158DRE4 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives with identical specifications are available to ensure design continuity and supply chain reliability.

Q: Are there any pinout differences between these parts?

A: No. All three parts use the 16-SOIC package with identical pinout configuration. Direct PCB replacement is possible without circuit modification.

Q: Do these parts require different handling procedures?

A: All parts share MSL Level 1 (Unlimited) moisture sensitivity rating, requiring standard ESD precautions during handling and storage. No differential handling procedures are necessary.