SN74LVC32AQDREP Equivalent & Substitute Parts

Part Overview

The SN74LVC32AQDREP is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments, packaged in 14-SOIC surface mount configuration. This part operates across a 2V to 3.6V supply voltage range with low quiescent current and fast propagation delay characteristics. The part is currently active in production. Substitute parts may be required due to inventory constraints, regional availability, or specific application requirements such as automotive qualification or extended operating temperature ranges.

Substiute Parts

SN74LVC32AQDREP

Texas InstrumentsIn Stock: 754SN74LVC32AQDREP Datasheet

Current PartRFQ

SN74LVC32AQDRQ1

Texas InstrumentsIn Stock: 954SN74LVC32AQDRQ1 Datasheet

Parametric EquivalentRFQ

74LCX32M

Fairchild SemiconductorIn Stock: 497974LCX32M Datasheet

MFR RecommendedRFQ

74LVC32AD,112

Nexperia USA Inc.In Stock: 95174LVC32AD,112 Datasheet

MFR RecommendedRFQ

74LVC32AD,118

Nexperia USA Inc.In Stock: 727474LVC32AD,118 Datasheet

MFR RecommendedRFQ

MC74LCX32DR2G

onsemiIn Stock: 3406MC74LCX32DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC32AQDREP is determined by the following critical parameters:

Functional Equivalence Requirements:

• Logic Type: OR Gate
• Number of Circuits: 4
• Number of Inputs: 2
• Package / Case: 14-SOIC (0.154", 3.90mm Width)

Electrical Compatibility Requirements:

• Voltage - Supply: 2V ~ 3.6V (minimum range)
• Current - Output High, Low: 24mA, 24mA
• Max Propagation Delay @ 3.3V, 50pF: 3.8ns or faster
• Input Logic Level thresholds within acceptable tolerance

Manufacturing and Compliance Requirements:

• RoHS3 Compliant status
• Active or Automotive-qualified product status

Parts meeting all functional and electrical requirements are classified as direct parametric equivalents. Parts with extended supply voltage ranges (1.2V minimum) or higher quiescent current specifications remain functionally compatible but represent design trade-offs. Parts with slower propagation delays or obsolete status are noted for application-specific evaluation.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance): SN74LVC32AQDRQ1 is a direct parametric equivalent with identical electrical specifications. This part carries automotive AEC-Q100 qualification, making it suitable for applications requiring automotive-grade components while maintaining identical performance characteristics.

Compatible Substitutes (Acceptable Performance Trade-offs): 74LVC32AD,118 (Nexperia USA Inc.) is an active production part with identical propagation delay and operating temperature range. This part accepts extended supply voltage (1.2V minimum) and exhibits higher quiescent current (40 µA maximum). These characteristics remain within acceptable tolerance for most applications and provide broader voltage compatibility.

Performance-Constrained Substitutes: 74LCX32M (Fairchild Semiconductor) and MC74LCX32DR2G (onsemi) both exhibit slower propagation delay (5.5ns versus 3.8ns) and reduced maximum operating temperature (-40°C to 85°C versus 125°C). These parts are suitable only for applications where timing margins accommodate the additional delay and temperature range is not a constraint.

Obsolete Status: 74LVC32AD,112 (Nexperia USA Inc.) carries obsolete product status and should be avoided for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC32AQDRQ1 be used as a direct replacement for SN74LVC32AQDREP? A: Yes. SN74LVC32AQDRQ1 is electrically identical to SN74LVC32AQDREP with matching supply voltage range, quiescent current, propagation delay, and operating temperature. The primary difference is automotive AEC-Q100 qualification. Both parts are in active production.

Q: What is the impact of using 74LVC32AD,118 instead of SN74LVC32AQDREP? A: 74LVC32AD,118 maintains identical propagation delay (3.8ns) and operating temperature range (-40°C to 125°C). However, quiescent current is higher (40 µA versus 10 µA) and supply voltage range is extended (1.2V minimum versus 2V minimum). For applications operating at or above 2V with standard quiescent current budgets, this part is functionally compatible.

Q: Why do 74LCX32M and MC74LCX32DR2G have slower propagation delays? A: These parts belong to the 74LCX series rather than 74LVC series. The 74LCX architecture exhibits 5.5ns propagation delay at 3.3V and 50pF load, compared to 3.8ns for 74LVC variants. Selection of these parts requires confirmation that timing margins in the application accommodate the additional 1.7ns delay.

Q: Are all substitute parts RoHS3 compliant? A: SN74LVC32AQDREP, SN74LVC32AQDRQ1, 74LVC32AD,112, and 74LVC32AD,118 are explicitly RoHS3 compliant. Compliance status for 74LCX32M and MC74LCX32DR2G is provided in detailed specifications.

Q: What packaging options are available? A: SN74LVC32AQDREP and SN74LVC32AQDRQ1 are supplied in Tape & Reel (TR) packaging. 74LVC32AD,118 and MC74LCX32DR2G are also available in Tape & Reel. 74LVC32AD,112 is supplied in Tube packaging. 74LCX32M is supplied in Bulk packaging. Packaging selection depends on procurement and assembly requirements.

Q: Can 74LVC32AD,112 be used despite obsolete status? A: 74LVC32AD,112 meets all electrical specifications for the SN74LVC32AQDREP application. However, obsolete status indicates discontinued production. New designs should utilize active production alternatives such as 74LVC32AD,118 or SN74LVC32AQDRQ1 to ensure long-term supply chain stability.