CD74HC32MTG4 Equivalent & Substitute Parts

Part Overview

The CD74HC32MTG4 is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Suitable alternatives maintain identical logic functionality, electrical characteristics, and mechanical compatibility within the 74HC32 logic family.

Substiute Parts

CD74HC32MTG4

Texas InstrumentsIn Stock: 873CD74HC32MTG4 Datasheet

Current PartRFQ

CD74HC32M96

Texas InstrumentsIn Stock: 24770CD74HC32M96 Datasheet

Parametric EquivalentRFQ

CD74HC32MT

Texas InstrumentsIn Stock: 1127CD74HC32MT Datasheet

Parametric EquivalentRFQ

MC74HC32ADR2G

onsemiIn Stock: 43358MC74HC32ADR2G Datasheet

DirectRFQ

74HC32D,653

Nexperia USA Inc.In Stock: 375574HC32D,653 Datasheet

MFR RecommendedRFQ

74HC32S14-13

Diodes IncorporatedIn Stock: 6513174HC32S14-13 Datasheet

MFR RecommendedRFQ

MC74HC32ADG

onsemiIn Stock: 1287MC74HC32ADG Datasheet

MFR RecommendedRFQ

MM74HC32M

Fairchild SemiconductorIn Stock: 1175MM74HC32M Datasheet

MFR RecommendedRFQ

MM74HC32MX

Fairchild SemiconductorIn Stock: 18461MM74HC32MX Datasheet

MFR RecommendedRFQ

NLV74HC32ADG

onsemiIn Stock: 1557NLV74HC32ADG Datasheet

MFR RecommendedRFQ

NLV74HC32ADR2G

onsemiIn Stock: 2076NLV74HC32ADR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74HC32MTG4 is determined by strict adherence to the following parameters:

Critical Substitution Parameters:

• Logic Type: OR Gate (4-channel, 2-input configuration)
• Voltage Supply Range: 2V to 6V minimum
• Package Type: 14-SOIC surface mount
• Input/Output Logic Levels: 0.5V–1.8V (low), 1.5V–4.2V (high)
• Operating Temperature Range: Minimum -55°C to 125°C
• RoHS3 Compliance and MSL Level 1

Allowed Variations:

• Quiescent Current: Up to 20 µA (CD74HC32MTG4 specifies 2 µA maximum)
• Propagation Delay: Up to 19ns @ 6V, 50pF (CD74HC32MTG4 specifies 15ns maximum)
• Operating Temperature Lower Bound: -40°C acceptable (CD74HC32MTG4 specifies -55°C)
• Packaging Format: Cut Tape, Digi-Reel, Tube, or Tape & Reel formats are interchangeable for the same device
• Manufacturer: Any qualified semiconductor manufacturer producing 74HC32 logic family

Parts meeting all critical parameters are direct substitutes. Parts with relaxed temperature ranges or higher quiescent current remain functionally compatible but may not be suitable for all applications.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Identical Specifications): CD74HC32M96 (Texas Instruments, Active) is the primary direct substitute. It maintains all electrical and thermal specifications of the CD74HC32MTG4 with active product status and full availability.

Tier 2 - Functional Equivalents (Enhanced Performance): MC74HC32ADR2G and MC74HC32ADG (onsemi, Active) offer superior performance with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns). Both maintain the full -55°C to 125°C operating range and RoHS3 compliance. These are suitable for applications where lower power consumption or faster switching is beneficial.

Tier 3 - Compatible Alternatives (Relaxed Temperature Range): 74HC32D,653 (Nexperia USA Inc., Active) and 74HC32S14-13 (Diodes Incorporated, Active) are functionally compatible but operate only to -40°C minimum. The 74HC32S14-13 exhibits higher quiescent current (20 µA). These are suitable for applications not requiring extended low-temperature operation below -40°C.

Not Recommended: MM74HC32M and MM74HC32MX (Fairchild Semiconductor) have restricted operating temperature range (-40°C to 85°C) and lack confirmed RoHS3 compliance. NLV74HC32ADG and NLV74HC32ADR2G are automotive-grade parts with obsolete status.

Frequently Asked Questions (FAQ)

Q: Can I use CD74HC32M96 as a direct replacement for CD74HC32MTG4? A: Yes. CD74HC32M96 is a direct parametric equivalent with identical electrical specifications, operating temperature range, and package. The primary difference is product status (Active vs. Discontinued) and packaging format availability.

Q: What is the difference between MC74HC32ADR2G and MC74HC32ADG? A: Both are onsemi products with identical electrical specifications. MC74HC32ADR2G is supplied in Cut Tape & Digi-Reel format, while MC74HC32ADG is supplied in Tube format. Electrical performance is equivalent.

Q: Why does 74HC32S14-13 have higher quiescent current (20 µA)? A: 74HC32S14-13 is manufactured by Diodes Incorporated and exhibits different process characteristics. The 20 µA specification remains within acceptable limits for most applications but may impact power consumption in battery-powered designs.

Q: Can I use parts with -40°C minimum operating temperature in -55°C environments? A: No. Applications requiring operation below -40°C must use parts specified for -55°C minimum, such as CD74HC32M96, MC74HC32ADR2G, MC74HC32ADG, or NLV74HC32ADR2G.

Q: Are all substitute parts RoHS3 compliant? A: All recommended substitutes except MM74HC32M and MM74HC32MX are confirmed RoHS3 compliant. Fairchild Semiconductor parts lack documented RoHS3 status in the provided specifications.

Q: Does packaging format (Cut Tape, Tube, Digi-Reel) affect electrical performance? A: No. Packaging format is a logistics and handling consideration only. Electrical specifications and performance are identical across all packaging formats for the same part number.

Q: What is the significance of the automotive-grade NLV74HC32 variants? A: NLV74HC32ADG and NLV74HC32ADR2G are AEC-Q100 qualified automotive-grade parts. These are obsolete but remain suitable for automotive applications requiring automotive qualification. Standard commercial-grade parts are not AEC-Q100 qualified.