SN74AS253ADRG4 Equivalent & Substitute Parts

Part Overview

The SN74AS253ADRG4 is a 2 x 4:1 multiplexer logic integrated circuit manufactured by Texas Instruments in 16-SOIC surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates with single supply voltage (4.5V to 5.5V) and is suitable for applications requiring multiplexing functionality in standard TTL logic environments.

Substiute Parts

SN74AS253ADRG4

Texas InstrumentsIn Stock: 1100SN74AS253ADRG4 Datasheet

Current PartRFQ

SN74ALS153DR

Texas InstrumentsIn Stock: 3447SN74ALS153DR Datasheet

Parametric EquivalentRFQ

SN74ALS253DR

Texas InstrumentsIn Stock: 972SN74ALS253DR Datasheet

Parametric EquivalentRFQ

SN74AS253AD

Texas InstrumentsIn Stock: 745SN74AS253AD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74AS253ADRG4 is determined by strict equivalence across the following critical parameters:

• Circuit configuration: 2 x 4:1 multiplexer topology
• Package type: 16-SOIC surface mount
• Electrical specifications: Output current (2.6mA high, 24mA low), supply voltage (4.5V ~ 5.5V)
• Operating temperature range: 0°C ~ 70°C
• Compliance certifications: ROHS3, MSL Level 1

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

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain full electrical and functional equivalence to the SN74AS253ADRG4. Selection among substitutes should be based on the following factors:

Product Status: SN74ALS153DR and SN74ALS253DR are active products with ongoing manufacturer support, while SN74AS253AD remains active within the 74AS series. The obsolete status of the original part necessitates transition to an active alternative.

Compliance Certifications: All substitute parts carry ROHS3 compliance and MSL Level 1 rating, meeting the same environmental and regulatory requirements as the original component.

Packaging and Procurement: SN74ALS153DR and SN74ALS253DR are supplied in Tape & Reel format, suitable for automated assembly. SN74AS253AD is supplied in Tube format, appropriate for manual handling or lower-volume applications. Selection depends on production volume and assembly methodology.

Series Compatibility: The 74ALS series substitutes (SN74ALS153DR, SN74ALS253DR) represent the low-power Schottky variant, while SN74AS253AD maintains the advanced Schottky series designation of the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS153DR and SN74ALS253DR be used interchangeably with SN74AS253ADRG4?

A: Yes. Both parts maintain identical circuit configuration (2 x 4:1 multiplexer), package type (16-SOIC), electrical specifications (output current, supply voltage), and operating temperature range. The 74ALS designation indicates low-power Schottky technology, which is functionally compatible with the 74AS advanced Schottky series in this application.

Q: What is the difference between SN74ALS153DR and SN74ALS253DR?

A: Both are 2 x 4:1 multiplexers in 16-SOIC packaging with identical electrical parameters. The primary difference is the base product number (74ALS153 vs. 74ALS253), which reflects internal design variations that do not affect functional equivalence for substitution purposes.

Q: Does packaging format (Tape & Reel vs. Tube) affect electrical performance?

A: No. Packaging format affects only procurement, storage, and assembly handling. SN74ALS153DR and SN74ALS253DR in Tape & Reel format are suitable for high-volume automated assembly, while SN74AS253AD in Tube format is appropriate for lower-volume or manual assembly operations. Electrical performance remains identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN74ALS153DR, SN74ALS253DR, and SN74AS253AD all carry ROHS3 compliance certification, matching the environmental standards of the original SN74AS253ADRG4.

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

A: MSL Level 1 indicates unlimited shelf life without moisture bake-out requirements. All identified substitutes carry this rating, ensuring consistent handling and storage procedures across the product family.