SN74AS153D Equivalent & Substitute Parts

Part Overview

The SN74AS153D 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 obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The SN74AS153D serves applications requiring dual 4-to-1 data selection with single supply voltage operation across industrial and commercial temperature ranges.

Substiute Parts

SN74AS153D

Texas InstrumentsIn Stock: 1187SN74AS153D Datasheet

Current PartRFQ

SN74ALS153D

Texas InstrumentsIn Stock: 1255SN74ALS153D Datasheet

Parametric EquivalentRFQ

SN74ALS253D

Texas InstrumentsIn Stock: 1485SN74ALS253D Datasheet

Parametric EquivalentRFQ

SN74AS253AD

Texas InstrumentsIn Stock: 745SN74AS253AD Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74AS153D is determined by strict equivalence across the following electrical and mechanical parameters:

• Circuit configuration: 2 x 4:1 multiplexer topology
• Package type: 16-SOIC surface mount form factor
• Voltage supply range: 4.5V ~ 5.5V single supply
• Output current specifications: 2.6mA (high) / 24mA (low)
• Operating temperature range: 0°C ~ 70°C
• Mounting type: Surface mount
• RoHS and MSL compliance: ROHS3 Compliant, MSL 1

All substitute parts listed maintain identical electrical performance and mechanical compatibility within these parameters. Substitution is valid across different logic series (74AS and 74ALS) provided all specified parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production continuity, SN74AS253AD is the preferred substitute. This part maintains active product status with Texas Instruments, ensuring long-term availability and supply chain stability. All substitute parts listed are ROHS3 compliant and carry MSL 1 rating, meeting environmental and moisture sensitivity requirements.

SN74ALS153D and SN74ALS253D are available as Last Time Buy alternatives. These parts provide equivalent electrical and mechanical performance but represent end-of-life inventory with limited future availability.

Selection between 74AS and 74ALS series variants depends on existing design qualification and supply chain preferences, as all listed parts maintain identical electrical specifications and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS153D replace SN74AS153D in existing designs?

A: Yes. Both parts maintain identical electrical parameters including voltage supply (4.5V ~ 5.5V), output current specifications (2.6mA / 24mA), operating temperature range (0°C ~ 70°C), and 16-SOIC package form factor. The primary difference is product status and series designation (74ALS vs 74AS).

Q: What is the difference between SN74AS253AD and SN74ALS253D?

A: Both parts are functionally equivalent 2 x 4:1 multiplexers in 16-SOIC packages with identical electrical specifications. SN74AS253AD is currently active, while SN74ALS253D is Last Time Buy. The base product numbers differ (253 vs 153), but electrical performance and package compatibility remain equivalent.

Q: Are all substitute parts pin-compatible?

A: Yes. All listed substitute parts use the 16-SOIC package with identical pinout and electrical characteristics, ensuring direct PCB compatibility without design modification.

Q: What does "Last Time Buy" status mean for SN74ALS153D and SN74ALS253D?

A: Last Time Buy indicates these parts are in end-of-life phase with limited remaining inventory. Existing stock is available, but future production is not planned. For long-term production requirements, SN74AS253AD (Active status) is recommended.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and regulatory requirements.