74F253SCX Equivalent & Substitute Parts

Part Overview

The 74F253SCX is a 2 x 4:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74F253 series provides dual 4-to-1 multiplexing functionality suitable for data selection and routing applications in digital logic systems.

Substiute Parts

74F253SCX

onsemiIn Stock: 340774F253SCX Datasheet

Current PartRFQ

SN74F253D

Texas InstrumentsIn Stock: 1452SN74F253D Datasheet

DirectRFQ

SN74F253DR

Texas InstrumentsIn Stock: 1890SN74F253DR Datasheet

Parametric EquivalentRFQ

SN74F253DRG4

Texas InstrumentsIn Stock: 931SN74F253DRG4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F253SCX are qualified based on identical electrical and mechanical parameters. The substitution criteria are:

• Circuit configuration: 2 x 4:1 multiplexer topology
• Package: 16-SOIC with 0.154" (3.90mm) width
• Output current ratings: 3mA high, 24mA low
• Supply voltage: 4.5V ~ 5.5V single supply
• Operating temperature range: 0°C ~ 70°C
• Mounting: Surface mount technology
• Moisture sensitivity: MSL 1

All substitute parts listed maintain these parameters and are functionally interchangeable at the electrical level. Differences exist only in manufacturer, product status, and packaging format (tube versus tape & reel).

Parameter Comparison

Engineering Selection Recommendations

SN74F253DR is the primary recommended substitute. This part is manufactured by Texas Instruments, maintains active product status, and carries ROHS3 compliance certification. The tape & reel packaging format is standard for high-volume production environments. Current inventory availability is 1837 pieces.

SN74F253D serves as an alternative substitute with identical electrical specifications. This part is classified as Last Time Buy by Texas Instruments and is supplied in tube packaging, suitable for lower-volume applications or manual assembly processes. ROHS3 compliance is maintained. Current inventory is 1384 pieces.

SN74F253DRG4 is functionally equivalent but is discontinued at DiGi Electronics, limiting procurement viability for ongoing supply chain requirements.

All three substitutes are electrically and mechanically compatible with the 74F253SCX and require no circuit modifications for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can SN74F253DR replace 74F253SCX directly in existing designs? A: Yes. The SN74F253DR maintains identical electrical parameters, package dimensions, and pin configuration. No circuit modifications are required.

Q: What is the difference between SN74F253D and SN74F253DR? A: Both parts are electrically identical. The primary difference is packaging format: SN74F253D is supplied in tube packaging, while SN74F253DR is supplied in tape & reel format. Tape & reel is standard for automated assembly; tube packaging is used for manual or lower-volume applications.

Q: Why is 74F253SCX listed as obsolete? A: The onsemi 74F253SCX has reached end-of-life status. Texas Instruments continues to manufacture equivalent 74F253 variants, making substitution straightforward.

Q: Are there any compliance differences between the main part and substitutes? A: The Texas Instruments substitutes (SN74F253D, SN74F253DR, SN74F253DRG4) carry ROHS3 compliance certification. All parts maintain REACH Unaffected status and MSL 1 moisture sensitivity rating.

Q: Which substitute should I select for new production designs? A: SN74F253DR is recommended for new designs due to active product status, standard tape & reel packaging for automated assembly, and confirmed availability.