SN74LV02APWT Equivalent & Substitute Parts

Part Overview

The SN74LV02APWT is a NOR Gate IC with 4 channels and 2 inputs per channel, manufactured by Texas Instruments in a 14-TSSOP surface mount package. This device is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design requirements and production needs. The part operates across a 2V to 5.5V supply voltage range with low quiescent current and is suitable for logic-level applications requiring NOR gate functionality.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	2V ~ 5.5V
Current - Quiescent (Max)	20 µA
Current - Output High, Low	12mA, 12mA
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the SN74LV02APWT is determined by the following critical parameters: logic type (NOR Gate), circuit count (4 channels), input count (2 per channel), package type (14-TSSOP), mounting method (surface mount), and operating temperature range (-40°C ~ 85°C).

The substitute parts are grouped into two categories:

Parametric Equivalent: SN74LV02APWR maintains identical electrical specifications and supply voltage range (2V ~ 5.5V), differing only in packaging format (Tape & Reel versus Cut Tape).

Manufacturer Recommended Alternatives: 74LVX02MTCX and MC74LVX02DTR2G belong to the 74LVX series, which operates within a narrower supply voltage range (2V ~ 3.6V) and exhibits different quiescent current and output drive characteristics. These parts maintain the same logic function, circuit count, input count, and package type, making them suitable for applications where the reduced voltage range and lower power consumption are compatible with system requirements.

Parameter Comparison

Parameter	SN74LV02APWT	SN74LV02APWR	74LVX02MTCX	MC74LVX02DTR2G
Manufacturer	Texas Instruments	Texas Instruments	Fairchild Semiconductor	onsemi
Series	74LV	74LV	74LVX	74LVX
Logic Type	NOR Gate	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	4	4	4	4
Number of Inputs	2	2	2	2
Voltage - Supply	2V ~ 5.5V	2V ~ 5.5V	2V ~ 3.6V	2V ~ 3.6V
Current - Quiescent (Max)	20 µA	20 µA	2 µA	2 µA
Current - Output High, Low	12mA, 12mA	12mA, 12mA	4mA, 4mA	4mA, 4mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Product Status	Discontinued	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

SN74LV02APWR is the direct parametric equivalent and primary substitute. It maintains identical electrical specifications and supply voltage range while offering active product status and continuous availability. This part is recommended for applications requiring exact electrical performance matching and is suitable for designs currently using the SN74LV02APWT.

74LVX02MTCX and MC74LVX02DTR2G are manufacturer-recommended alternatives for applications compatible with a reduced supply voltage range (2V ~ 3.6V). These parts offer lower quiescent current (2 µA versus 20 µA) and reduced output drive capability (4mA versus 12mA). Selection of these alternatives is appropriate when system voltage constraints align with the 2V to 3.6V range and when lower power consumption is beneficial. Both parts maintain active product status and ROHS3 compliance (MC74LVX02DTR2G).

Frequently Asked Questions (FAQ)

Q: Can SN74LV02APWR be used as a direct replacement for SN74LV02APWT?

A: Yes. SN74LV02APWR is a parametric equivalent with identical electrical specifications, supply voltage range, and package type. The only difference is packaging format (Tape & Reel versus Cut Tape). Both parts are suitable for direct substitution in existing designs.

Q: What are the key differences between the 74LV and 74LVX series?

A: The 74LV series (SN74LV02APWT, SN74LV02APWR) operates across 2V to 5.5V supply voltage with 20 µA quiescent current and 12mA output drive. The 74LVX series (74LVX02MTCX, MC74LVX02DTR2G) operates across 2V to 3.6V supply voltage with 2 µA quiescent current and 4mA output drive. Selection depends on system voltage requirements and power consumption constraints.

Q: Are all substitute parts available in the same 14-TSSOP package?

A: Yes. All listed substitute parts are available in the 14-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: Which substitute part should be selected for low-power applications?

A: The 74LVX series parts (74LVX02MTCX and MC74LVX02DTR2G) are suitable for low-power applications, offering 2 µA quiescent current compared to 20 µA in the 74LV series. Selection requires confirmation that system supply voltage remains within the 2V to 3.6V range.

Q: What is the impact of reduced output drive current in 74LVX alternatives?

A: The 74LVX series provides 4mA output drive compared to 12mA in the 74LV series. This reduction is suitable for applications with moderate fanout requirements. Applications requiring higher output drive capability should retain the 74LV series.

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