74F32SCX OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74F32SCX is a 4-channel 2-input OR gate logic IC manufactured by onsemi in 14-SOIC surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74F32 series provides standard TTL-compatible OR gate functionality suitable for digital logic circuits requiring 4.5V to 5.5V supply voltage operation.

Substiute Parts

74F32SCX

onsemiIn Stock: 436274F32SCX Datasheet

Current PartRFQ

SN74F32D

Texas InstrumentsIn Stock: 2420SN74F32D Datasheet

DirectRFQ

SN74F32DR

Texas InstrumentsIn Stock: 9521SN74F32DR Datasheet

DirectRFQ

SN74F32NSR

Texas InstrumentsIn Stock: 3209SN74F32NSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F32SCX are classified based on electrical and mechanical parameter compatibility within the 74F32 series. All substitute candidates maintain identical logic functionality (4-channel 2-input OR gate), electrical specifications (4.5V ~ 5.5V supply, 1mA/20mA output current, 5.6ns propagation delay), and operating temperature range (0°C ~ 70°C).

Substitution eligibility is determined by the following criteria:

• Logic Type: OR Gate (4 channels, 2 inputs per channel)
• Supply Voltage: 4.5V ~ 5.5V
• Output Current Ratings: 1mA (high), 20mA (low)
• Input Logic Levels: 0.8V (low), 2V (high)
• Propagation Delay: 5.6ns @ 5V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package Compatibility: 14-SOIC or 14-SO

Direct substitutes maintain identical package dimensions. Similar substitutes may have minor package width variations within the 14-SOIC/14-SO family but retain full electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

SN74F32DR (Texas Instruments) is the primary recommended substitute for the obsolete 74F32SCX. This part maintains active product status, ensuring long-term availability and supply chain stability. The SN74F32DR is ROHS3 compliant and available in Tape & Reel packaging with 9453 units in current inventory. Electrical and mechanical specifications are identical to the original part, providing direct functional equivalence.

SN74F32D (Texas Instruments) serves as a secondary substitute option. While electrically equivalent, this part carries Last Time Buy status, indicating limited future availability. It is suitable for applications where Tube packaging is acceptable and immediate sourcing is required.

SN74F32NSR (Texas Instruments) is classified as a similar substitute due to package width variation (0.209" vs. 0.154"). While the 14-SO package maintains electrical compatibility and identical pin configuration, the increased package width may require PCB layout verification before implementation. This part is ROHS3 compliant and actively manufactured.

All three substitute parts are REACH Unaffected and carry identical ECCN and HTSUS classifications as the original component, ensuring regulatory compliance for export and procurement purposes.

Frequently Asked Questions (FAQ)

Q: Can SN74F32DR be used as a direct replacement for 74F32SCX?

A: Yes. The SN74F32DR is electrically and mechanically equivalent to the 74F32SCX. Both parts feature identical logic functionality (4-channel 2-input OR gate), supply voltage range (4.5V ~ 5.5V), output current ratings (1mA/20mA), input logic levels (0.8V/2V), propagation delay (5.6ns @ 5V), and operating temperature range (0°C ~ 70°C). The 14-SOIC package dimensions are identical (0.154", 3.90mm width), allowing direct PCB substitution without layout modification.

Q: What is the difference between SN74F32D and SN74F32DR?

A: Both parts are electrically identical and share the same 14-SOIC package dimensions. The primary difference is packaging format: SN74F32D is supplied in Tube packaging, while SN74F32DR is supplied in Tape & Reel format. SN74F32DR carries Active product status with higher inventory availability (9453 units), whereas SN74F32D is Last Time Buy status. For new designs and production runs, SN74F32DR is preferred due to supply continuity.

Q: Can SN74F32NSR replace 74F32SCX in existing PCB designs?

A: SN74F32NSR is electrically compatible but requires PCB layout verification. The package width differs (0.209" vs. 0.154"), which may affect footprint compatibility depending on PCB design constraints and available board space. Pin configuration and electrical specifications remain identical. Consult PCB layout documentation before implementing this substitute in space-constrained applications.

Q: Are all substitute parts ROHS3 compliant?

A: SN74F32D, SN74F32DR, and SN74F32NSR are all ROHS3 compliant. The original 74F32SCX does not specify RoHS status. All parts are REACH Unaffected and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts, including the original 74F32SCX and all substitutes, carry MSL 1 (Unlimited) rating. This indicates no moisture sensitivity restrictions and no special storage or handling requirements.