74AHC08D,112 Equivalent & Substitute Parts

Part Overview

The 74AHC08D,112 is a 4-channel 2-input AND gate logic IC manufactured by Nexperia USA Inc., housed in a 14-SO surface mount package. This component operates across a 2V to 5.5V supply voltage range with a maximum propagation delay of 7.9ns at 5V with 50pF load. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

74AHC08D,112

Nexperia USA Inc.In Stock: 105274AHC08D,112 Datasheet

Current PartRFQ

SN74AHC08QDRG4Q1

Texas InstrumentsIn Stock: 5199SN74AHC08QDRG4Q1 Datasheet

DirectRFQ

SN74AHC08QDRQ1

Texas InstrumentsIn Stock: 3386SN74AHC08QDRQ1 Datasheet

DirectRFQ

SN74AHC08MDREP

Texas InstrumentsIn Stock: 1149SN74AHC08MDREP Datasheet

UpgradeRFQ

74VHC08M

Fairchild SemiconductorIn Stock: 142674VHC08M Datasheet

SimilarRFQ

74VHC08MX

onsemiIn Stock: 119474VHC08MX Datasheet

SimilarRFQ

SN74AHC08DR

Texas InstrumentsIn Stock: 3145SN74AHC08DR Datasheet

SimilarRFQ

SN74AHC08DRG4

Texas InstrumentsIn Stock: 781SN74AHC08DRG4 Datasheet

SimilarRFQ

SN74AHC08NSR

Texas InstrumentsIn Stock: 6225SN74AHC08NSR Datasheet

SimilarRFQ

SN74AHC08D

Texas InstrumentsIn Stock: 3294SN74AHC08D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74AHC08D,112 is determined by the following critical parameters: logic function (4-channel 2-input AND gate), supply voltage range (2V ~ 5.5V), output drive capability (8mA), propagation delay (7.9ns @ 5V, 50pF), operating temperature range, and package compatibility.

Substitute parts are grouped into the following categories:

Direct Equivalents (Texas Instruments 74AHC Series): SN74AHC08QDRG4Q1, SN74AHC08QDRQ1, and SN74AHC08D maintain identical electrical specifications and 14-SOIC packaging. These parts are functionally interchangeable with the original part.

Upgraded Variants (Extended Temperature): SN74AHC08MDREP extends the operating temperature range to -55°C ~ 125°C while maintaining all other electrical parameters and packaging.

Similar Logic Family (74VHC Series): 74VHC08M and 74VHC08MX from Fairchild Semiconductor and onsemi respectively share the same logic function, supply voltage, output drive, and propagation delay specifications. Operating temperature is limited to -40°C ~ 85°C.

Package Variants (14-SO vs 14-SOIC): SN74AHC08NSR uses a wider 14-SO package (0.209", 5.30mm width) versus the standard 14-SOIC (0.154", 3.90mm width), requiring PCB layout verification.

Obsolete Variants: SN74AHC08DRG4 is listed as obsolete but maintains full electrical equivalence to the main part.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct replacement of the 74AHC08D,112 with active product status and identical specifications, select SN74AHC08QDRG4Q1 or SN74AHC08QDRQ1 from Texas Instruments. Both parts are ROHS3 compliant, AEC-Q100 qualified for automotive applications, and available in Tape & Reel packaging.

For applications requiring extended low-temperature operation to -55°C, SN74AHC08MDREP provides the expanded temperature range while maintaining all other electrical parameters and ROHS3 compliance.

For applications with operating temperature limits of -40°C to 85°C, 74VHC08MX from onsemi or 74VHC08M from Fairchild Semiconductor are functionally equivalent alternatives within the 74VHC logic family.

SN74AHC08DR is suitable for applications requiring active product status with standard -40°C to 125°C operating range and is available in Cut Tape & Digi-Reel packaging.

SN74AHC08NSR maintains full electrical equivalence but uses a wider 14-SO package (5.30mm width) compared to the standard 14-SOIC (3.90mm width). PCB layout compatibility must be verified before selection.

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting standard environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74AHC08QDRG4Q1 directly replace 74AHC08D,112 in existing designs?

A: Yes. SN74AHC08QDRG4Q1 is electrically and mechanically equivalent. Both parts share identical supply voltage (2V ~ 5.5V), output drive (8mA), propagation delay (7.9ns @ 5V, 50pF), operating temperature (-40°C ~ 125°C), and 14-SOIC package dimensions (0.154", 3.90mm width). The primary difference is product status: the original is obsolete while SN74AHC08QDRG4Q1 is active with AEC-Q100 automotive qualification.

Q: What is the difference between 74AHC and 74VHC logic families?

A: Both families meet the same electrical specifications for this AND gate function: 2V ~ 5.5V supply, 8mA output drive, and 7.9ns propagation delay. The key difference is operating temperature range. 74AHC parts operate from -40°C to 125°C, while 74VHC parts are limited to -40°C to 85°C. Select 74AHC variants for applications requiring the full temperature range.

Q: Why does SN74AHC08NSR have a different package designation (14-SO vs 14-SOIC)?

A: SN74AHC08NSR uses a 14-SO package with 5.30mm width, compared to the standard 14-SOIC with 3.90mm width. Both are surface mount packages with identical pin counts and electrical function, but the wider body requires PCB layout verification to ensure footprint compatibility before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed—including SN74AHC08QDRG4Q1, SN74AHC08QDRQ1, SN74AHC08MDREP, 74VHC08M, 74VHC08MX, SN74AHC08DR, SN74AHC08DRG4, SN74AHC08NSR, and SN74AHC08D—are ROHS3 compliant and REACH unaffected.

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

A: Both are surface mount packaging formats. Tape & Reel (TR) provides parts wound on continuous tape for automated assembly equipment. Cut Tape (CT) & Digi-Reel provides the same tape format but cut to specific lengths. Selection depends on production volume and assembly equipment compatibility.

Q: Can SN74AHC08MDREP be used in place of the original part?

A: Yes. SN74AHC08MDREP is electrically equivalent with identical supply voltage, output drive, and propagation delay. The advantage is extended low-temperature operation to -55°C compared to the original -40°C minimum. This part is suitable for applications requiring enhanced cold-temperature performance.

Q: What does "Discontinued at DiGi Electronics" mean for SN74AHC08D?

A: This designation indicates the part is no longer actively stocked by DiGi Electronics but may remain available through other distributors. For new designs, select active parts such as SN74AHC08QDRG4Q1 or SN74AHC08DR to ensure long-term supply availability.