DM74ALS253N Equivalent & Substitute Parts

Part Overview

The DM74ALS253N is a 2 x 4:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DM74ALS253N operates as a dual 4-to-1 multiplexer with single supply voltage operation, suitable for digital logic applications requiring channel selection and data routing functions.

Substiute Parts

DM74ALS253N

onsemiIn Stock: 1225DM74ALS253N Datasheet

Current PartRFQ

SN74ALS153N

Texas InstrumentsIn Stock: 2415SN74ALS153N Datasheet

Parametric EquivalentRFQ

SN74ALS253N

Texas InstrumentsIn Stock: 1451SN74ALS253N Datasheet

Parametric EquivalentRFQ

SN74AS153N

Texas InstrumentsIn Stock: 2446SN74AS153N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS253N are determined by strict equivalence across the following electrical and mechanical parameters:

• Circuit Configuration: 2 x 4:1 multiplexer topology
• Package Type: 16-DIP (0.300", 7.62mm) through-hole mounting
• Voltage Supply Range: 4.5V ~ 5.5V single supply operation
• Output Current Specifications: 2.6mA (high), 24mA (low)
• Operating Temperature Range: 0°C ~ 70°C
• Logic Series Compatibility: 74ALS and 74AS series logic families

Three substitute parts meet these criteria: SN74ALS153N and SN74ALS253N from Texas Instruments (74ALS series), and SN74AS153N from Texas Instruments (74AS series). All three maintain identical electrical performance and package specifications while offering active product status and improved compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are parametrically equivalent to the DM74ALS253N and maintain full electrical and mechanical compatibility. Selection among substitutes should be based on the following factors:

SN74ALS253N (Texas Instruments) - Direct part number equivalent offering active product status, ROHS3 compliance, and 1400 units in stock. This represents the most direct replacement path for the obsolete DM74ALS253N.

SN74ALS153N (Texas Instruments) - Alternative 74ALS series multiplexer with identical electrical specifications and package, active product status, ROHS3 compliance, and 2340 units in stock. Suitable where base product number variation is acceptable.

SN74AS153N (Texas Instruments) - 74AS series logic family alternative with identical electrical specifications and package, active product status, ROHS3 compliance, and 2436 units in stock. The 74AS series offers faster switching characteristics compared to 74ALS, maintaining full backward compatibility within the specified operating parameters.

All substitute parts carry REACH Unaffected status and EAR99 export classification matching the original component.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS153N replace DM74ALS253N directly? A: Yes. Both parts share identical electrical specifications (2 x 4:1 multiplexer, 4.5V ~ 5.5V supply, 2.6mA/24mA output current, 0°C ~ 70°C operating range) and 16-DIP package. The base product number difference (153 vs 253) does not affect functional equivalence for this multiplexer category.

Q: What is the difference between 74ALS and 74AS logic series? A: Both series maintain identical voltage supply ranges, output current specifications, and operating temperature ranges as specified for this application. The 74AS series represents an advanced Schottky variant with faster propagation delays compared to 74ALS. All electrical parameters relevant to substitution remain equivalent.

Q: Are all substitute parts RoHS compliant? A: Yes. All three substitute parts (SN74ALS153N, SN74ALS253N, SN74AS153N) are ROHS3 compliant. The original DM74ALS253N RoHS status was not specified in available documentation.

Q: Can I use these substitutes in existing PCB designs without modification? A: Yes. All substitute parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging with matching pinout and electrical characteristics. No PCB layout or schematic modifications are required.

Q: Which substitute offers the best availability? A: SN74AS153N offers the highest inventory level at 2436 units in stock, followed by SN74ALS153N at 2340 units and SN74ALS253N at 1400 units.