LM339LVRTER Equivalent & Substitute Parts

Part Overview

The LM339LVRTER is a general-purpose comparator integrated circuit manufactured by Texas Instruments, featuring four independent comparators in a 16-WQFN surface-mount package. This device operates across a supply voltage range of 1.65V to 5.5V and is designed for open-collector output applications. The part is currently in active production status with 6300 units in stock.

Equivalent and substitute parts are identified when design requirements necessitate alternative packaging formats, different output configurations, or when primary part availability is constrained. Substitution requires verification that electrical parameters remain within system tolerance and that mechanical compatibility with the printed circuit board layout is maintained.

Substiute Parts

LM339LVRTER

Texas InstrumentsIn Stock: 6390LM339LVRTER Datasheet

Current PartRFQ

ADCMP393ARZ

Analog Devices Inc.In Stock: 1369ADCMP393ARZ Datasheet

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ADCMP396ARZ

Analog Devices Inc.In Stock: 2214ADCMP396ARZ Datasheet

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APX339TSG-13

Diodes IncorporatedIn Stock: 5475APX339TSG-13 Datasheet

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TS334IPT

STMicroelectronicsIn Stock: 1313TS334IPT Datasheet

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TS334IYDT

STMicroelectronicsIn Stock: 16682TS334IYDT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM339LVRTER is determined by the following critical parameters:

Functional Equivalence Criteria:

• Four independent comparator elements
• General-purpose comparator classification
• Operating temperature range of -40°C to 125°C
• Surface-mount technology

Electrical Compatibility Criteria:

• Supply voltage range must encompass or overlap with 1.65V ~ 5.5V
• Output type must be open-collector or open-drain (functionally equivalent for pull-up applications)
• Input offset voltage and propagation delay must be within acceptable system margins
• Quiescent current specifications must not exceed design power budgets

Mechanical Compatibility Criteria:

• Surface-mount package format
• Pin count and pinout compatibility
• Physical dimensions suitable for PCB layout constraints

The substitute parts identified below meet these criteria across different package formats and from alternative manufacturers, enabling design flexibility while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

TS334IPT and TS334IYDT (STMicroelectronics) represent the closest functional equivalents to the LM339LVRTER. Both devices feature open-drain output configuration, identical quiescent current specifications (26µA), and superior propagation delay performance (210ns versus 600ns). The TS334 series operates across 1.6V to 5V, which encompasses the critical lower voltage threshold of the LM339LVRTER. Both parts maintain the full -40°C to 125°C operating temperature range and carry ROHS3 compliance with MSL 1 rating. The TS334IPT is supplied in Tape & Reel format matching the primary part, while TS334IYDT includes automotive-grade qualification (AEC-Q100) in 14-SOIC package.

Secondary Substitutes (Functional Equivalence with Trade-offs):

ADCMP396ARZ (Analog Devices Inc.) provides a 16-element SOIC package with open-drain output, maintaining the four-comparator configuration. This device operates at 2.3V to 5.5V and exhibits comparable input offset voltage (2.5mV). However, quiescent current is elevated at 59.4µA, and propagation delay specification is not provided. ROHS3 compliance and MSL 1 rating are confirmed.

APX339TSG-13 (Diodes Incorporated) offers open-drain with rail-to-rail output in 14-TSSOP package format. Propagation delay matches the primary part at 600ns. Critical limitations include reduced operating temperature range (-40°C to 85°C), elevated quiescent current (300µA), and MSL 3 moisture sensitivity requiring controlled storage conditions. This device is suitable only for applications not requiring the full 125°C upper temperature specification.

ADCMP393ARZ (Analog Devices Inc.) features rail-to-rail output in 14-SOIC package with four comparators. Operating range is 2.3V to 5.5V. This device exhibits the lowest input bias current (0.03µA) but introduces significant propagation delay (4.2µs), making it unsuitable for timing-critical applications. ROHS3 compliance and MSL 1 rating apply.

Compliance and Certification Status:

All substitute parts carry ROHS3 compliance except the primary LM339LVRTER, which is marked as not applicable. The TS334IYDT variant includes AEC-Q100 automotive qualification, enabling use in automotive-grade applications. Moisture sensitivity levels are predominantly MSL 1 (unlimited shelf life) except APX339TSG-13 at MSL 3, requiring 168-hour maximum storage at elevated humidity conditions.

Frequently Asked Questions (FAQ)

Q: Can the ADCMP393ARZ replace the LM339LVRTER in all applications?

A: The ADCMP393ARZ provides functional equivalence as a four-element general-purpose comparator but introduces significant propagation delay (4.2µs versus 600ns). This device is suitable only for applications where timing performance is not critical. Additionally, the 14-SOIC package differs from the 16-WQFN format, requiring PCB layout modification.

Q: What is the functional difference between open-collector and open-drain outputs?

A: Open-collector and open-drain outputs are functionally equivalent in pull-up circuit configurations. Both require external pull-up resistors to establish high-level output voltage. The terminology distinction reflects different semiconductor technologies (bipolar versus MOSFET), but circuit behavior is identical for comparator applications.

Q: Is the TS334IPT suitable for automotive applications?

A: The TS334IPT is industrial-grade and operates across -40°C to 125°C with ROHS3 compliance. For automotive-grade requirements, the TS334IYDT variant carries AEC-Q100 qualification and is the appropriate selection.

Q: Why does the APX339TSG-13 have MSL 3 rating while other substitutes have MSL 1?

A: Moisture sensitivity level is determined by the semiconductor manufacturing process and packaging materials. MSL 3 requires storage at controlled humidity (not exceeding 60% relative humidity) with a maximum shelf life of 168 hours after moisture exposure. MSL 1 devices have unlimited shelf life under standard storage conditions. This difference does not affect electrical performance but impacts supply chain handling and storage requirements.

Q: Can I use the ADCMP396ARZ as a direct pin-for-pin replacement?

A: The ADCMP396ARZ is not a direct pin-for-pin replacement. While it provides 16 pins in SOIC package format, the pinout differs from the 16-WQFN configuration of the LM339LVRTER. PCB redesign is required for substitution. Additionally, the package footprint dimensions differ significantly (0.154" width SOIC versus 3x3mm WQFN).

Q: What are the supply voltage compatibility constraints for substitution?

A: The LM339LVRTER operates from 1.65V to 5.5V. Substitute parts must support the minimum supply voltage required by the application. The TS334 series (1.6V minimum) and LM339LVRTER (1.65V minimum) are compatible across the full range. ADCMP devices (2.3V minimum) and APX339TSG-13 (2.5V minimum) cannot be used in applications requiring operation below their respective minimum thresholds.

Q: How does propagation delay affect comparator selection?

A: Propagation delay determines the response time from input transition to output transition. The LM339LVRTER specifies 600ns maximum delay. The TS334 series provides superior performance at 210ns, enabling faster response in timing-sensitive circuits. The ADCMP393ARZ at 4.2µs introduces significant delay unsuitable for high-speed applications. Application requirements determine acceptable propagation delay specifications.

Q: Are all substitute parts available in the same packaging format?

A: No. The LM339LVRTER is supplied in 16-WQFN (3x3) Tape & Reel format. Substitute parts are available in 14-SOIC, 16-SOIC, and 14-TSSOP packages. Package selection depends on PCB layout constraints and available footprint space. The TS334IPT matches the Tape & Reel supply format of the primary part.