SN74AHCT08PW Equivalent & Substitute Parts

Part Overview

The SN74AHCT08PW is a 4-channel AND gate logic IC manufactured by Texas Instruments in a 14-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production continuity. The SN74AHCT08PW operates within the 74AHCT logic family and provides standard AND gate functionality for digital logic applications requiring 4.5V to 5.5V supply voltage operation.

Substiute Parts

SN74AHCT08PW

Texas InstrumentsIn Stock: 3465SN74AHCT08PW Datasheet

Current PartRFQ

SN74AHCT08PWR

Texas InstrumentsIn Stock: 1703SN74AHCT08PWR Datasheet

DirectRFQ

74VHCT08AMTCX

Fairchild SemiconductorIn Stock: 2404674VHCT08AMTCX Datasheet

DirectRFQ

MC74VHCT08ADTR2G

onsemiIn Stock: 59920MC74VHCT08ADTR2G Datasheet

DirectRFQ

74AHCT08PW,118

Nexperia USA Inc.In Stock: 98874AHCT08PW,118 Datasheet

UpgradeRFQ

74AHCT08PW-Q100J

Nexperia USA Inc.In Stock: 542474AHCT08PW-Q100J Datasheet

UpgradeRFQ

74VHCT08PW,118

Nexperia USA Inc.In Stock: 2065374VHCT08PW,118 Datasheet

UpgradeRFQ

74AHCT08T14-13

Diodes IncorporatedIn Stock: 203774AHCT08T14-13 Datasheet

MFR RecommendedRFQ

74VHCT08PW-Q100J

Nexperia USA Inc.In Stock: 83974VHCT08PW-Q100J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AHCT08PW is determined by strict equivalence across the following critical parameters:

• Logic Type: AND Gate with 4 channels and 2 inputs per channel
• Supply Voltage Range: 4.5V ~ 5.5V
• Output Current Capability: 8mA high and low
• Input Logic Levels: 0.8V low threshold, 2V high threshold
• Package Type: 14-TSSOP surface mount form factor
• Propagation Delay: Maximum 7.9ns @ 5V, 50pF load
• Operating Temperature Range: -40°C ~ 125°C
• RoHS3 Compliance and MSL Level 1

Substitute parts are grouped into three categories: Direct Manufacturer Equivalents (identical electrical and mechanical specifications), Upgrade Parts (enhanced features or certifications), and Manufacturer-Recommended Alternatives (functionally equivalent with minor parameter variations).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Preferred for Drop-In Replacement):

SN74AHCT08PWR from Texas Instruments is the primary direct equivalent, maintaining identical electrical specifications and operating temperature range while offering active product status. This part differs only in packaging format (Cut Tape & Digi-Reel® versus Tube).

Cross-Manufacturer Alternatives:

MC74VHCT08ADTR2G from onsemi and 74VHCT08AMTCX from Fairchild Semiconductor provide functional equivalence within the 74VHCT logic family. Both maintain identical propagation delay and quiescent current specifications. The onsemi part supports the full -40°C ~ 125°C temperature range, while the Fairchild part operates to -40°C ~ 85°C.

Nexperia Variants:

74AHCT08PW,118 and 74AHCT08PW-Q100J from Nexperia USA Inc. provide active alternatives within the 74AHCT series. The -Q100J variant includes AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade components.

Alternative with Parameter Variance:

74AHCT08T14-13 from Diodes Incorporated exhibits higher quiescent current (20 µA versus 2 µA) and slower propagation delay (10ns versus 7.9ns). This part remains functionally compatible but should be selected only when the original specifications are not critical to system performance.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74AHCT08PW with SN74AHCT08PWR?

A: Yes. Both parts are Texas Instruments 74AHCT series AND gates with identical electrical specifications, operating temperature range, and package type. The difference is packaging format: SN74AHCT08PWR uses Cut Tape & Digi-Reel® instead of Tube.

Q: What is the difference between 74AHCT and 74VHCT series parts?

A: Both series provide equivalent AND gate functionality with identical propagation delay and quiescent current. The primary difference is the logic family designation. Parts are interchangeable when electrical specifications match.

Q: Is 74AHCT08T14-13 a suitable replacement?

A: 74AHCT08T14-13 is functionally compatible but exhibits higher quiescent current (20 µA) and slower propagation delay (10ns). Use this part only if your application tolerates these parameter variations.

Q: Do all substitute parts support the same operating temperature range?

A: Most substitutes support -40°C ~ 125°C. The exception is 74VHCT08AMTCX from Fairchild Semiconductor, which operates to -40°C ~ 85°C. Verify temperature requirements for your application.

Q: Are automotive-qualified versions available?

A: Yes. 74AHCT08PW-Q100J and 74VHCT08PW-Q100J both carry AEC-Q100 automotive qualification for applications requiring automotive-grade components.

Q: What packaging options are available for substitutes?

A: Substitutes are available in Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Tube formats. Select based on your procurement and assembly requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating.