SN74F32D Equivalent & Substitute Parts

Part Overview

The SN74F32D is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74F32D performs fundamental OR logic operations across four independent channels, making it essential for digital circuit design applications requiring boolean logic functions.

Finding equivalent substitute parts is necessary due to the Last Time Buy status, which restricts future procurement from standard inventory channels. Active alternative configurations ensure design continuity and long-term supply chain reliability.

Substiute Parts

SN74F32D

Texas InstrumentsIn Stock: 2420SN74F32D Datasheet

Current PartRFQ

SN74F32DR

Texas InstrumentsIn Stock: 9521SN74F32DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74F32D is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel 2-input OR gate configuration
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 1mA/20mA output current, 0.8V/2V input logic levels, 5.6ns maximum propagation delay
• Package format: 14-SOIC surface mount with 0.154" (3.90mm) width
• Series classification: 74F logic family
• Environmental compliance: ROHS3 compliance, MSL Level 1

The SN74F32DR qualifies as a direct substitute based on identical electrical performance, logic configuration, and package specifications. The primary distinction is packaging format: the SN74F32D is supplied in Tube packaging, while the SN74F32DR is supplied in Tape & Reel (TR) format. Both maintain the same functional and electrical characteristics required for seamless circuit integration.

Parameter Comparison

Engineering Selection Recommendations

The SN74F32DR is the qualified substitute for the SN74F32D based on identical electrical and functional specifications. The SN74F32D carries Last Time Buy status, restricting future availability, while the SN74F32DR maintains Active product status with established supply channels.

Both parts maintain ROHS3 compliance and MSL Level 1 certification, ensuring equivalent environmental and reliability standards. The functional and electrical parameters are identical, supporting direct circuit substitution without design modification.

Selection between these parts should be based on procurement requirements: the SN74F32D remains available in current inventory (2392 units) for immediate fulfillment, while the SN74F32DR offers superior long-term availability (9453 units) with Active product status. For new designs or long-term production planning, the SN74F32DR is the preferred choice due to sustained manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the SN74F32DR replace the SN74F32D in existing designs?

A: Yes. The SN74F32DR is a direct functional and electrical equivalent. Both parts implement identical 4-channel 2-input OR gate logic with matching supply voltage (4.5V ~ 5.5V), output current (1mA/20mA), input logic levels (0.8V/2V), propagation delay (5.6ns), and 14-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging (SN74F32D) is used for lower-volume orders and manual assembly processes. Tape & Reel packaging (SN74F32DR) is designed for automated pick-and-place assembly and higher-volume production. Both formats contain identical components with the same electrical specifications and package footprint.

Q: Why is the SN74F32D classified as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory remains available for purchase, but no future manufacturing runs are planned. The SN74F32DR, with Active status, represents the ongoing product line for this logic function.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74F32D and SN74F32DR maintain identical ROHS3 compliance, MSL Level 1 certification, REACH Unaffected status, and ECCN/HTSUS classifications. Environmental and regulatory requirements are equivalent.

Q: Can I use the SN74F32DR for new product designs?

A: Yes. The SN74F32DR is recommended for new designs due to its Active product status and established long-term availability. It provides identical functionality and performance to the SN74F32D while ensuring sustained supply chain support.