74AC32SJ OR Gate IC Equivalent & Substitute Parts

Part Overview

The 74AC32SJ is a 4-channel 2-input OR gate logic IC manufactured by onsemi in 14-SOP surface mount packaging. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74AC32 series maintains consistent logic functionality across multiple manufacturers and packaging variants, enabling direct substitution based on electrical and mechanical compatibility.

Substiute Parts

74AC32SJ

onsemiIn Stock: 246874AC32SJ Datasheet

Current PartRFQ

SN74AC32NSR

Texas InstrumentsIn Stock: 4644SN74AC32NSR Datasheet

DirectRFQ

CD74AC32M96

Texas InstrumentsIn Stock: 2667CD74AC32M96 Datasheet

SimilarRFQ

SN74AC32D

Texas InstrumentsIn Stock: 2054SN74AC32D Datasheet

SimilarRFQ

SN74AC32DR

Texas InstrumentsIn Stock: 5121SN74AC32DR Datasheet

SimilarRFQ

SN74AC32MDREP

Texas InstrumentsIn Stock: 1014SN74AC32MDREP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC32SJ is determined by the following criteria:

Primary Substitution Criteria:

• Logic type: OR Gate with 4 channels and 2 inputs per channel
• Voltage supply range: 2V ~ 6V minimum
• Output current capability: 24mA minimum for both high and low states
• Propagation delay: 7.5ns maximum @ 5V, 50pF load
• Operating temperature range: -40°C ~ 85°C minimum
• Mounting type: Surface mount
• Package compatibility: 14-SOIC footprint

Substitute Classification:

Direct Equivalents maintain identical electrical specifications and are pin-compatible:

• SN74AC32NSR (Texas Instruments, Active status)
• SN74AC32D (Texas Instruments, Discontinued at DiGi Electronics)
• SN74AC32DR (Texas Instruments, Active status)
• SN74AC32MDREP (Texas Instruments, Active status)

Similar Substitutes have extended or modified specifications that remain functionally compatible:

• CD74AC32M96 (Texas Instruments, extended voltage range 1.5V ~ 5.5V, extended temperature -55°C ~ 125°C, slightly higher propagation delay 9.5ns)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

SN74AC32NSR and SN74AC32DR are the preferred substitutes for the obsolete 74AC32SJ. Both parts are manufactured by Texas Instruments with active product status, ensuring long-term availability and supply chain stability. SN74AC32NSR is available in Tape & Reel packaging with 4607 units in stock, while SN74AC32DR is available in Cut Tape & Digi-Reel packaging with 5038 units in stock. Both maintain the original electrical specifications including 2V ~ 6V supply voltage, 7.5ns propagation delay, and -40°C ~ 85°C operating temperature range. Both are ROHS3 compliant.

SN74AC32MDREP offers identical electrical performance with extended operating temperature range (-55°C ~ 125°C), suitable for applications requiring wider temperature operation. This part is available in Tape & Reel packaging with 908 units in stock and maintains ROHS3 compliance.

For Extended Operating Conditions:

CD74AC32M96 provides extended voltage supply range (1.5V ~ 5.5V) and extended operating temperature range (-55°C ~ 125°C), with slightly relaxed input logic levels. The propagation delay increases to 9.5ns. This substitute is appropriate for designs requiring lower supply voltage operation or wider temperature extremes. The part is available in Cut Tape & Digi-Reel packaging with 2558 units in stock and is ROHS3 compliant.

Packaging Considerations:

The original 74AC32SJ uses 14-SOP (0.209", 5.30mm width) packaging. SN74AC32NSR maintains this exact package footprint. SN74AC32D, SN74AC32DR, SN74AC32MDREP, and CD74AC32M96 use 14-SOIC (0.154", 3.90mm width) packaging, which requires PCB layout modification but maintains electrical compatibility and pin assignment.

Frequently Asked Questions (FAQ)

Q: Can SN74AC32NSR directly replace the 74AC32SJ without PCB modification?

A: SN74AC32NSR maintains identical electrical specifications and uses the same 14-SOIC (0.209", 5.30mm width) package footprint as the 74AC32SJ, enabling direct PCB replacement without layout changes.

Q: What is the difference between SN74AC32DR and SN74AC32NSR?

A: Both parts maintain identical electrical specifications and operating temperature range (-40°C ~ 85°C). The primary difference is packaging format: SN74AC32NSR is supplied in Tape & Reel, while SN74AC32DR is supplied in Cut Tape & Digi-Reel format. Both are pin-compatible and functionally equivalent.

Q: When should CD74AC32M96 be selected instead of direct equivalents?

A: CD74AC32M96 should be selected when the application requires extended operating temperature range (-55°C ~ 125°C) or lower supply voltage operation (1.5V minimum). The slightly higher propagation delay (9.5ns versus 7.5ns) must be evaluated against timing requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All Texas Instruments substitute parts listed (SN74AC32NSR, SN74AC32D, SN74AC32DR, SN74AC32MDREP, and CD74AC32M96) are ROHS3 compliant. The original 74AC32SJ RoHS status is not specified in the provided data.

Q: What is the impact of package size change from 14-SOP to 14-SOIC?

A: The 14-SOIC (0.154", 3.90mm width) package used by SN74AC32D, SN74AC32DR, SN74AC32MDREP, and CD74AC32M96 is physically smaller than the 14-SOP (0.209", 5.30mm width) package. PCB footprint modification is required, but pin assignment and electrical function remain identical. Verify PCB layout compatibility before implementation.

Q: Is SN74AC32D still available for new designs?

A: SN74AC32D is discontinued at DiGi Electronics and should not be selected for new designs. SN74AC32NSR, SN74AC32DR, or SN74AC32MDREP are recommended as active alternatives with confirmed long-term availability.

Q: What certifications apply to these substitute parts?

A: All Texas Instruments substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 for export purposes. Moisture sensitivity level is 1 (Unlimited) for all parts.