SN74ALS133D NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74ALS133D is a 13-input NAND gate logic IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74ALS133D operates within the 74ALS logic family and is designed for digital logic applications requiring high-speed NAND gate functionality. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term supply chain planning.

Substiute Parts

SN74ALS133D

Texas InstrumentsIn Stock: 2895SN74ALS133D Datasheet

Current PartRFQ

SN74ALS133DR

Texas InstrumentsIn Stock: 3174SN74ALS133DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS133D is determined by strict equivalence across the following critical parameters:

• Logic function: 13-input NAND gate with single circuit configuration
• Package format: 16-SOIC surface mount package with identical physical dimensions
• Electrical specifications: Supply voltage range 4.5V ~ 5.5V, output current ratings 400µA/8mA, input logic thresholds 0.8V/2V
• Timing performance: Maximum propagation delay of 25ns at 5V with 50pF load
• Operating temperature: 0°C ~ 70°C range
• Compliance standards: ROHS3 compliance and MSL Level 1 rating

The SN74ALS133DR qualifies as a direct substitute based on identical electrical characteristics, package specifications, and compliance certifications. The primary distinction is product status: SN74ALS133DR maintains Active status, ensuring continued availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS133DR is the qualified substitute for the SN74ALS133D based on complete electrical and mechanical equivalence. Both parts are manufactured by Texas Instruments and share identical functional specifications, package dimensions, and compliance certifications including ROHS3 compliance and MSL Level 1 rating.

The SN74ALS133DR is recommended for new designs and ongoing production due to its Active product status, which ensures sustained manufacturing and supply availability. For existing designs currently using the SN74ALS133D, transition to the SN74ALS133DR presents no functional or compatibility risk, as all critical parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS133DR be used as a direct replacement for the SN74ALS133D in existing designs?

A: Yes. The SN74ALS133DR is electrically and mechanically identical to the SN74ALS133D. All functional parameters, including logic operation, timing characteristics, voltage specifications, and package format are equivalent. No circuit modifications are required.

Q: What is the difference between the SN74ALS133D and SN74ALS133DR?

A: The primary difference is product status. The SN74ALS133D is Last Time Buy, indicating discontinued production. The SN74ALS133DR maintains Active status with ongoing manufacturing support. Both parts are functionally identical.

Q: Are there any package or pinout differences between these parts?

A: No. Both the SN74ALS133D and SN74ALS133DR use the 16-SOIC package with identical physical dimensions (0.154" width, 3.90mm) and pinout configuration. They are pin-for-pin compatible.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN74ALS133D and SN74ALS133DR are ROHS3 compliant with MSL Level 1 rating. They meet identical environmental and regulatory requirements.

Q: What are the key electrical parameters that define substitution for this NAND gate IC?

A: Substitution is determined by matching logic function (13-input NAND gate), supply voltage range (4.5V ~ 5.5V), output current specifications (400µA/8mA), input logic thresholds (0.8V/2V), propagation delay (25ns @ 5V, 50pF), and operating temperature range (0°C ~ 70°C).