SN74LVC02APWTG4 NOR Gate IC Equivalent & Substitute Parts

Part Overview

The SN74LVC02APWTG4 is a 4-channel 2-input NOR gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The SN74LVC02APWTG4 operates across a 1.65V to 3.6V supply voltage range with low quiescent current and fast propagation delay characteristics suitable for low-power digital logic applications.

Substiute Parts

SN74LVC02APWTG4

Texas InstrumentsIn Stock: 1176SN74LVC02APWTG4 Datasheet

Current PartRFQ

SN74LVC02APWT

Texas InstrumentsIn Stock: 1893SN74LVC02APWT Datasheet

MFR RecommendedRFQ

SN74LVC02APWR

Texas InstrumentsIn Stock: 3526SN74LVC02APWR Datasheet

Parametric EquivalentRFQ

74LCX02MTCX

Fairchild SemiconductorIn Stock: 1949074LCX02MTCX Datasheet

MFR RecommendedRFQ

74LVC02APW,118

NXP SemiconductorsIn Stock: 36181474LVC02APW,118 Datasheet

MFR RecommendedRFQ

MC74LCX02DTG

onsemiIn Stock: 1664MC74LCX02DTG Datasheet

MFR RecommendedRFQ

MC74LCX02DTR2G

onsemiIn Stock: 4050MC74LCX02DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC02APWTG4 are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Logic Type: NOR Gate with 4 channels and 2 inputs per channel
• Package: 14-TSSOP surface mount form factor
• Supply Voltage Range: Minimum 1.65V operation capability
• Output Current: 24mA high and low drive capability
• Operating Temperature: -40°C to 125°C range
• Propagation Delay: Maximum 5.5ns @ 3.3V, 50pF load

Grouping Logic:

• Group 1 (MFR Recommended - Texas Instruments): SN74LVC02APWT and SN74LVC02APWR maintain identical electrical specifications to the main part with active product status and improved packaging options (Tape & Reel).
• Group 2 (Parametric Equivalent - Cross-Manufacturer): 74LCX02MTCX (Fairchild), MC74LCX02DTG, and MC74LCX02DTR2G (onsemi) provide functional equivalence with minor parameter variations in quiescent current (10 µA vs 1 µA) and maximum operating temperature (85°C vs 125°C).
• Group 3 (Functional Equivalent - NXP): 74LVC02APW,118 operates across an extended lower voltage range (1.2V) with higher quiescent current (40 µA) but maintains core NOR gate functionality and 14-TSSOP packaging.

Parameter Comparison

Engineering Selection Recommendations

First Choice - Direct Replacement: SN74LVC02APWT and SN74LVC02APWR are the preferred substitutes. Both are manufactured by Texas Instruments with active product status, identical electrical specifications to the discontinued SN74LVC02APWTG4, and ROHS3 compliance. These parts maintain the 1.65V minimum supply voltage and 1 µA quiescent current specification. Selection between APWT and APWR depends on packaging preference and inventory availability (APWT: 1799 pcs, APWR: 3455 pcs in stock).

Secondary Choice - Cross-Manufacturer Equivalent: MC74LCX02DTR2G (onsemi) and MC74LCX02DTG provide functional equivalence with active product status and ROHS3 compliance. These parts operate at 2V minimum supply voltage (not 1.65V) and exhibit 10 µA quiescent current. Maximum operating temperature is limited to 85°C versus 125°C for the original part. Propagation delay increases to 5.5ns. Use this option when supply voltage remains above 2V and operating temperature does not exceed 85°C.

Tertiary Choice - Extended Voltage Range: 74LVC02APW,118 (NXP) supports extended lower voltage operation (1.2V minimum) with active product status and ROHS3 compliance. Quiescent current is elevated at 40 µA, and propagation delay is 5.5ns. This option is suitable for ultra-low voltage applications where the higher quiescent current is acceptable.

All substitute parts maintain 14-TSSOP surface mount packaging, 4-channel 2-input NOR gate functionality, and 24mA output drive capability.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC02APWT directly replace SN74LVC02APWTG4 in my design? A: Yes. SN74LVC02APWT is a direct electrical and functional replacement with identical supply voltage range (1.65V ~ 3.6V), quiescent current (1 µA), and propagation delay (4.2ns @ 3.3V, 50pF). The only difference is packaging format (Tape & Reel vs. the original form factor). Both are 14-TSSOP surface mount devices.

Q: What is the minimum supply voltage difference between SN74LVC02APWT and MC74LCX02DTR2G? A: SN74LVC02APWT operates at 1.65V minimum, while MC74LCX02DTR2G requires 2V minimum. If your circuit operates below 2V, you must use the Texas Instruments SN74LVC series parts. If your minimum supply voltage is 2V or higher, the onsemi MC74LCX02DTR2G is acceptable.

Q: How does quiescent current affect part selection? A: The original SN74LVC02APWTG4 draws 1 µA quiescent current. SN74LVC02APWT and SN74LVC02APWR maintain this specification. The 74LCX series (Fairchild and onsemi) draw 10 µA, and the NXP 74LVC02APW,118 draws 40 µA. For battery-powered or ultra-low-power applications, select parts with lower quiescent current ratings.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the original SN74LVC02APWTG4.

Q: What is the maximum operating temperature limitation for cross-manufacturer substitutes? A: The original SN74LVC02APWTG4 and Texas Instruments substitutes (SN74LVC02APWT, SN74LVC02APWR) operate to 125°C. Fairchild 74LCX02MTCX and onsemi MC74LCX02DTG/MC74LCX02DTR2G are limited to 85°C maximum. If your application requires operation above 85°C, use Texas Instruments parts only.

Q: Does packaging format affect electrical performance? A: No. Tape & Reel (TR), Tube, and Bulk packaging formats do not affect electrical performance. Packaging selection is based on procurement quantity, handling requirements, and assembly process compatibility. All 14-TSSOP packages are mechanically and electrically identical.