SN74F151BD Equivalent & Substitute Parts

Part Overview

The SN74F151BD is a 1 x 8:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited availability from the original manufacturer. The identification of equivalent and substitute parts is necessary to ensure design continuity and procurement flexibility for applications requiring this multiplexer functionality.

Substiute Parts

SN74F151BD

Texas InstrumentsIn Stock: 950SN74F151BD Datasheet

Current PartRFQ

SN74F151BDR

Texas InstrumentsIn Stock: 5441SN74F151BDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F151BD is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 1 x 8:1 multiplexer topology
• Package type: 16-SOIC surface mount form factor
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 1mA/24mA output current ratings
• Operating temperature range: 0°C ~ 70°C
• Compliance certifications: ROHS3, REACH Unaffected status

The SN74F151BDR qualifies as a direct substitute based on identical electrical characteristics, package specifications, and compliance requirements. The primary distinction is packaging format: the original part uses Tube packaging, while the substitute uses Tape & Reel (TR) format.

Parameter Comparison

Engineering Selection Recommendations

The SN74F151BDR is a qualified substitute for the SN74F151BD based on electrical and mechanical equivalence. Both parts maintain identical functional specifications, compliance certifications, and package dimensions. The SN74F151BDR carries Active product status, providing superior long-term availability compared to the Last Time Buy designation of the original part.

Selection between these parts should be based on procurement requirements: the SN74F151BD in Tube packaging is appropriate for lower-volume or manual assembly operations, while the SN74F151BDR in Tape & Reel format is optimized for automated pick-and-place assembly processes. Both parts satisfy ROHS3 and REACH compliance requirements for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74F151BDR be used as a direct replacement for the SN74F151BD?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical circuit configuration, package dimensions, voltage specifications, and operating temperature ranges. The only difference is the packaging format (Tube versus Tape & Reel).

Q: What is the significance of the packaging format difference?

A: Packaging format affects handling and assembly processes. Tube packaging is suitable for manual component placement and lower-volume production. Tape & Reel format is designed for automated assembly equipment and higher-volume manufacturing. The electrical and functional performance of the component is identical regardless of packaging format.

Q: Why is the SN74F151BD marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer has discontinued or is discontinuing production of this specific part number. The SN74F151BDR, with Active status, represents the current production equivalent and is recommended for new designs and ongoing procurement.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance and REACH Unaffected status. Moisture Sensitivity Level is 1 (Unlimited) for both parts, indicating no special moisture handling requirements during storage or assembly.

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

A: Substitution is determined by equivalence in circuit configuration (1 x 8:1 multiplexer), package type (16-SOIC), supply voltage (4.5V ~ 5.5V), output current ratings (1mA/24mA), and operating temperature range (0°C ~ 70°C). All these parameters are identical between the SN74F151BD and SN74F151BDR.