SN74F253D Equivalent & Substitute Parts

Part Overview

The SN74F253D is a 2 x 4:1 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 SN74F253D operates with a single supply voltage between 4.5V and 5.5V and is suitable for applications requiring dual 4-to-1 multiplexing functionality in compact form factors. Identifying equivalent substitute parts ensures design continuity and supply chain reliability when the primary part reaches end-of-life status.

Substiute Parts

SN74F253D

Texas InstrumentsIn Stock: 1452SN74F253D Datasheet

Current PartRFQ

SN74F253DR

Texas InstrumentsIn Stock: 1890SN74F253DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F253D is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Both parts must provide 2 x 4:1 multiplexing functionality
• Package Type: Both parts must use 16-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width)
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), output current ratings (3mA high, 24mA low), and operating temperature range (0°C ~ 70°C) must match exactly
• Compliance Standards: RoHS3 compliance and MSL Level 1 rating must be maintained

The SN74F253DR qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance certifications. The primary distinction is packaging format: the SN74F253D is supplied in Tube packaging, while the SN74F253DR is supplied in Tape & Reel format. Both parts share the same base product number (74F253) and are manufactured by Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The SN74F253DR is a direct functional and electrical equivalent to the SN74F253D. Both parts maintain identical electrical performance specifications, package dimensions, and compliance certifications. The SN74F253D carries Last Time Buy status, indicating reduced availability and potential supply constraints. The SN74F253DR maintains Active product status with higher current inventory levels, providing improved supply chain reliability.

Selection between these parts should be based on packaging requirements and procurement logistics. The Tube packaging format of the SN74F253D is suitable for lower-volume applications or manual assembly processes. The Tape & Reel format of the SN74F253DR is optimized for automated pick-and-place assembly and higher-volume production environments. Both parts are ROHS3 compliant and carry MSL Level 1 rating, confirming suitability for standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can the SN74F253DR be used as a direct replacement for the SN74F253D in existing designs?

A: Yes. The SN74F253DR is electrically and functionally identical to the SN74F253D. Both parts provide 2 x 4:1 multiplexing in the same 16-SOIC package with identical electrical specifications, supply voltage range, output current ratings, and operating temperature range. The parts are pin-compatible and require no circuit modifications.

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

A: Tube packaging supplies individual components in a plastic tube, suitable for manual handling and lower-volume assembly. Tape & Reel packaging supplies components on a continuous carrier tape wound on a reel, optimized for automated assembly equipment. Both formats contain the same component; the difference is in handling and assembly methodology.

Q: Why is the SN74F253D 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. Existing inventory may be limited. The SN74F253DR, with Active status, represents the current production equivalent and is recommended for new designs or when supply continuity is critical.

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

A: No. Both the SN74F253D and SN74F253DR carry identical RoHS3 compliance and MSL Level 1 ratings. Both are REACH Unaffected and classified under ECCN EAR99. Compliance certifications are equivalent across both part numbers.

Q: What is the significance of MSL Level 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life under standard storage conditions. These components do not require special moisture-controlled storage or baking procedures prior to assembly, simplifying inventory management and reducing handling complexity.