SN74AS253ADR Equivalent & Substitute Parts

Part Overview

The SN74AS253ADR is a 2 x 4:1 multiplexer logic integrated circuit manufactured by Texas Instruments in 16-SOIC surface mount packaging. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The SN74AS253ADR operates with a single supply voltage between 4.5V and 5.5V and is suitable for applications requiring multiplexing functionality in the 0°C to 70°C operating temperature range.

Substiute Parts

SN74AS253ADR

Texas InstrumentsIn Stock: 1010SN74AS253ADR Datasheet

Current PartRFQ

SN74ALS153DR

Texas InstrumentsIn Stock: 3447SN74ALS153DR Datasheet

Parametric EquivalentRFQ

SN74ALS253DR

Texas InstrumentsIn Stock: 972SN74ALS253DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AS253ADR are identified based on strict parametric equivalence. The following criteria determine substitutability:

• Circuit Configuration: 2 x 4:1 multiplexer topology
• Package Type: 16-SOIC surface mount package with identical 0.154" (3.90mm) width
• Electrical Specifications: Voltage supply range 4.5V ~ 5.5V, output current ratings 2.6mA (high) and 24mA (low)
• Operating Temperature Range: 0°C ~ 70°C
• Compliance Standards: ROHS3 compliant, REACH unaffected, MSL 1 rating

The SN74ALS153DR and SN74ALS253DR meet all these parametric requirements and are classified as active products, providing production continuity for the obsolete SN74AS253ADR.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS153DR and SN74ALS253DR are direct parametric equivalents to the obsolete SN74AS253ADR. Both substitute parts maintain identical electrical specifications, package dimensions, and compliance certifications. Selection between the two substitute options should be based on circuit design requirements and availability. Both parts are active products with established supply chains, ensuring production continuity. ROHS3 compliance and MSL 1 rating confirm suitability for standard manufacturing and storage conditions without moisture sensitivity constraints.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS153DR and SN74ALS253DR be used interchangeably with the SN74AS253ADR?

A: Yes. Both substitute parts meet all parametric requirements including circuit configuration (2 x 4:1), package type (16-SOIC), electrical specifications (voltage supply 4.5V ~ 5.5V, output currents 2.6mA and 24mA), and operating temperature range (0°C ~ 70°C).

Q: What is the difference between the SN74ALS153DR and SN74ALS253DR?

A: Both parts are parametrically equivalent to the SN74AS253ADR. The selection between them depends on specific circuit design requirements and availability. Consult the respective datasheets for detailed functional differences if required.

Q: Are the substitute parts available in the same package?

A: Yes. Both SN74ALS153DR and SN74ALS253DR are supplied in 16-SOIC surface mount packaging with identical dimensions (0.154" or 3.90mm width), ensuring direct board-level compatibility.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating, matching the compliance profile of the original SN74AS253ADR.

Q: Why is the SN74AS253ADR classified as obsolete?

A: The SN74AS253ADR is an older logic device. The active substitute parts (SN74ALS153DR and SN74ALS253DR) provide equivalent functionality with continued manufacturing support and supply availability.