SN74HCT02PWT NOR Gate IC Equivalent & Substitute Parts

Part Overview

The SN74HCT02PWT is a 4-channel, 2-input NOR gate logic IC manufactured by Texas Instruments in a 14-TSSOP surface mount package. This part is currently discontinued at DiGi Electronics. Given its discontinued status, identifying functionally equivalent substitute parts is essential for design continuity, production planning, and component sourcing in applications requiring NOR gate logic functionality.

Substiute Parts

SN74HCT02PWT

Texas InstrumentsIn Stock: 1146SN74HCT02PWT Datasheet

Current PartRFQ

SN74HCT02PWR

Texas InstrumentsIn Stock: 2775SN74HCT02PWR Datasheet

Parametric EquivalentRFQ

74HCT02PW,118

NXP SemiconductorsIn Stock: 3199574HCT02PW,118 Datasheet

MFR RecommendedRFQ

74HCT02PW-Q100,118

Nexperia USA Inc.In Stock: 367174HCT02PW-Q100,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74HCT02PWT are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Logic Type: NOR Gate
• Number of Circuits: 4
• Number of Inputs: 2
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Quiescent (Max): 2 µA
• Current - Output High, Low: 4mA, 4mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ V, Max CL: 18ns @ 5.5V, 50pF or better

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP (0.173", 4.40mm Width)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all these criteria are considered direct parametric equivalents and may be substituted without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

SN74HCT02PWR (Texas Instruments) is the primary substitute for the discontinued SN74HCT02PWT. Both parts are manufactured by Texas Instruments and share identical electrical specifications and operating temperature ranges. The primary difference is packaging format: SN74HCT02PWR is supplied in Tape & Reel (TR) format, whereas the original part was supplied in tube packaging. Both maintain ROHS3 compliance and MSL 1 rating. This part is currently in active production status with 2700 units in stock.

74HCT02PW,118 (NXP Semiconductors) is a functionally equivalent NOR gate IC from an alternative manufacturer. While detailed electrical parameters are not fully specified in the provided data, this part shares the same base product number (74HCT02) and package type (14-TSSOP). It is supplied in bulk packaging and is in active production status with 31902 units in stock. Selection of this part requires confirmation of complete electrical parameter compatibility through NXP datasheets.

74HCT02PW-Q100,118 (Nexperia USA Inc.) is an automotive-grade equivalent with AEC-Q100 qualification. This part meets all electrical specifications of the main part with a slightly higher propagation delay (19ns @ 4.5V versus 18ns @ 5.5V) and an extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C). The automotive qualification and extended temperature range make this part suitable for applications requiring higher reliability or automotive-grade components. It is supplied in Tape & Reel (TR) format with 3604 units in stock.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74HCT02PWT with SN74HCT02PWR in my circuit?

A: Yes. Both parts are manufactured by Texas Instruments and share identical electrical specifications, operating temperature ranges, and package dimensions. The only difference is the packaging format (tube versus Tape & Reel). No circuit modifications are required.

Q: What is the difference between the Texas Instruments and NXP/Nexperia versions?

A: All three manufacturers produce 74HCT02 NOR gate ICs with the same logic function and package type. The primary differences are manufacturer identity, product status (active versus discontinued), and in the case of Nexperia, automotive-grade qualification and extended temperature range. Electrical performance is equivalent across all versions.

Q: Why does the Nexperia part (74HCT02PW-Q100,118) have a higher propagation delay specification?

A: The Nexperia part specifies propagation delay at 4.5V (lower supply voltage), whereas the Texas Instruments part specifies at 5.5V (higher supply voltage). Propagation delay increases at lower supply voltages. Both parts meet the same functional timing requirements within their specified operating conditions.

Q: Is the automotive-grade Nexperia part (74HCT02PW-Q100,118) required for my application?

A: Automotive-grade qualification (AEC-Q100) is required only for applications subject to automotive reliability standards. For standard industrial or consumer applications, the standard-grade equivalents (SN74HCT02PWR or 74HCT02PW,118) are appropriate. Selection should be based on application requirements, not part availability alone.

Q: What packaging format should I choose?

A: Tape & Reel (TR) packaging is standard for automated assembly processes. Bulk packaging is suitable for manual assembly or lower-volume applications. Tube packaging (original part) is less common in modern production. Choose based on your assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance status.