SN74F258DR Equivalent & Substitute Parts

Part Overview

The SN74F258DR is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The SN74F258DR performs multiplexing functions with single supply voltage operation, suitable for digital logic applications requiring signal selection across multiple input channels.

Substiute Parts

SN74F258DR

Texas InstrumentsIn Stock: 4477SN74F258DR Datasheet

Current PartRFQ

SN74F257DR

Texas InstrumentsIn Stock: 5337SN74F257DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F258DR is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 4 x 2:1 multiplexer topology
• Package type: 16-SOIC surface mount form factor
• Voltage supply range: 4.5V ~ 5.5V single supply
• Output current specifications: 3mA high, 24mA low
• Operating temperature range: 0°C ~ 70°C
• Independent circuit count: 1
• Compliance certifications: ROHS3, REACH Unaffected

The SN74F257DR qualifies as a parametric equivalent based on identical electrical characteristics and mechanical compatibility within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74F257DR is a direct parametric equivalent to the SN74F258DR across all electrical and mechanical specifications. The primary distinction is product status: the SN74F258DR is obsolete while the SN74F257DR maintains active status with Texas Instruments. Both parts carry ROHS3 compliance and REACH unaffected certification, meeting current regulatory requirements. The SN74F257DR is available in Tape & Reel packaging, supporting production environments requiring component automation. Selection of the SN74F257DR provides design continuity with improved supply chain availability and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the SN74F257DR directly replace the SN74F258DR in existing designs?

A: Yes. The SN74F257DR matches all critical electrical parameters including circuit configuration, voltage supply range, output current specifications, and operating temperature range. The 16-SOIC package dimensions are identical, enabling direct PCB compatibility without layout modifications.

Q: What is the significance of the product status difference?

A: The SN74F258DR is classified as obsolete, indicating Texas Instruments no longer manufactures or supports this part. The SN74F257DR maintains active status, ensuring continued availability, technical support, and compliance with evolving regulatory standards.

Q: Are there packaging differences between these parts?

A: Both parts use the 16-SOIC surface mount package with identical dimensions (0.154" width, 3.90mm). The SN74F257DR is supplied in Tape & Reel format, which is standard for automated assembly processes. The SN74F258DR packaging specification was not detailed in the original documentation.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the SN74F258DR and SN74F257DR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.

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

A: Substitution is determined by matching circuit configuration (4 x 2:1), package type (16-SOIC), voltage supply range (4.5V ~ 5.5V), output current specifications (3mA high, 24mA low), operating temperature range (0°C ~ 70°C), and compliance certifications (ROHS3, REACH).