SN74AS32D Equivalent & Substitute Parts

Part Overview

The SN74AS32D is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. The SN74AS32D remains functionally equivalent to active production alternatives within the 74AS logic family, making substitute identification critical for ongoing design support and procurement planning.

Substiute Parts

SN74AS32D

Texas InstrumentsIn Stock: 896SN74AS32D Datasheet

Current PartRFQ

SN74AS32DR

Texas InstrumentsIn Stock: 4811SN74AS32DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AS32D is determined by strict equivalence across the following parameters:

• Logic function: 4-channel 2-input OR gate
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 2mA/20mA output current, 0.8V/2V input logic levels, 5.8ns propagation delay
• Package type: 14-SOIC surface mount
• Compliance: ROHS3, MSL Level 1

The SN74AS32DR qualifies as a direct substitute based on identical electrical and functional parameters. The primary distinction is packaging format: the SN74AS32D is supplied in Tube packaging (Last Time Buy status), while the SN74AS32DR is supplied in Tape & Reel format with Active product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS32DR is the direct substitute for the SN74AS32D. Both components share identical electrical characteristics, logic function, and package specifications. The SN74AS32DR carries Active product status with higher inventory availability (4725 Pcs vs. 855 Pcs), making it the preferred selection for new designs and ongoing procurement. Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS32DR be used as a direct replacement for the SN74AS32D in existing designs?

A: Yes. The SN74AS32DR is electrically and functionally identical to the SN74AS32D. Both components operate at 4.5V ~ 5.5V supply voltage, deliver identical propagation delay (5.8ns @ 5V, 50pF), and are packaged in 14-SOIC format. The only difference is packaging format: Tube versus Tape & Reel.

Q: What is the significance of the Last Time Buy status on the SN74AS32D?

A: Last Time Buy indicates that Texas Instruments has discontinued production of the SN74AS32D. Existing inventory is limited (855 Pcs). For long-term supply chain stability, the SN74AS32DR (Active status) is recommended for new designs and future procurement.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the SN74AS32D and SN74AS32DR are ROHS3 compliant with MSL Level 1 rating. Compliance certifications are identical.

Q: Does packaging format affect circuit performance?

A: No. Tube and Tape & Reel packaging formats do not affect electrical performance or functional characteristics. The difference is in supply and handling format only.

Q: What are the key parameters that define substitution eligibility for the SN74AS32D?

A: Substitution is determined by: logic function (4-channel 2-input OR gate), supply voltage (4.5V ~ 5.5V), output current (2mA/20mA), input logic levels (0.8V/2V), propagation delay (5.8ns @ 5V, 50pF), operating temperature range (0°C ~ 70°C), and package type (14-SOIC surface mount).