LM339LVPWR Equivalent & Substitute Parts

Part Overview

The LM339LVPWR is a general-purpose comparator integrated circuit manufactured by Texas Instruments, housed in a 14-TSSOP surface-mount package. This device contains four independent comparators with open-collector outputs, designed for low-voltage applications spanning 1.65V to 5.5V supply voltage. The part is currently in active production status with 4018 units available in inventory.

Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturers' components that meet or exceed the electrical and mechanical specifications of the original device. Substitution becomes necessary due to supply constraints, design optimization, or component availability across different procurement channels.

Substiute Parts

LM339LVPWR

Texas InstrumentsIn Stock: 4036LM339LVPWR Datasheet

Current PartRFQ

ADCMP396ARZ-RL7

Analog Devices Inc.In Stock: 2292ADCMP396ARZ-RL7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM339LVPWR is evaluated based on the following critical parameters:

Functional Equivalence Criteria:

• Number of comparator elements: 4 independent comparators required
• Output configuration: Open-collector or open-drain topology
• Supply voltage range: Minimum 1.65V to 5.5V compatibility
• Input offset voltage: Maximum 2.5mV @ 5V
• Input bias current: Maximum 5pA to 0.03µA range
• Quiescent current: Maximum 59.4µA
• Common-mode rejection ratio (CMRR): Minimum 65dB
• Power supply rejection ratio (PSRR): Minimum 80dB
• Operating temperature range: -40°C to 125°C
• Surface-mount packaging with 14 or 16-pin configurations
• RoHS3 compliance and MSL Level 1 rating

The ADCMP396ARZ-RL7 qualifies as a substitute based on these parameters. While it employs a 16-SOIC package instead of 14-TSSOP, both are surface-mount configurations suitable for equivalent circuit board integration. The open-drain output of the ADCMP396ARZ-RL7 provides functional equivalence to the open-collector output of the LM339LVPWR in typical application circuits.

Parameter Comparison

Engineering Selection Recommendations

Both the LM339LVPWR and ADCMP396ARZ-RL7 maintain active production status with full RoHS3 compliance and MSL Level 1 moisture sensitivity ratings, indicating equivalent environmental and regulatory qualification.

The LM339LVPWR operates across a lower minimum supply voltage threshold of 1.65V compared to the ADCMP396ARZ-RL7 at 2.3V. Applications requiring operation below 2.3V supply voltage must retain the LM339LVPWR.

The ADCMP396ARZ-RL7 demonstrates superior common-mode rejection ratio performance at 74dB versus 65dB, providing enhanced noise immunity in high-interference environments. Both devices maintain identical power supply rejection ratio specifications at 80dB.

Package footprint differences exist between the 14-TSSOP (0.173" width) and 16-SOIC (0.154" width) configurations. Circuit board layout and routing constraints may influence package selection. Both packages are surface-mount technologies suitable for automated assembly processes.

Input bias current specifications differ significantly: LM339LVPWR at 5pA versus ADCMP396ARZ-RL7 at 0.03µA. Applications with high-impedance input sources may benefit from the lower bias current of the LM339LVPWR.

Quiescent current consumption is lower in the LM339LVPWR at 35µA maximum compared to 59.4µA in the ADCMP396ARZ-RL7. Battery-powered or ultra-low-power applications should prioritize the LM339LVPWR.

Frequently Asked Questions (FAQ)

Q: Can the ADCMP396ARZ-RL7 directly replace the LM339LVPWR in all applications?

A: Direct replacement is possible in applications where supply voltage remains at or above 2.3V and input bias current specifications of 0.03µA are acceptable. Applications requiring supply voltages below 2.3V or demanding input bias currents of 5pA or lower require the LM339LVPWR.

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

A: Both output configurations provide high-impedance states and low-impedance pull-to-ground states. Open-collector outputs use bipolar transistor technology, while open-drain outputs use field-effect transistor technology. Both are functionally equivalent in standard comparator circuit applications with external pull-up resistors.

Q: Are the package footprints compatible on existing circuit boards?

A: No. The 14-TSSOP package (0.173" width) and 16-SOIC package (0.154" width) have different pin counts and spacing. Circuit board redesign is required to accommodate package substitution. Both are surface-mount technologies suitable for standard reflow soldering processes.

Q: Which device should be selected for battery-powered applications?

A: The LM339LVPWR is preferred for battery-powered designs due to lower maximum quiescent current consumption at 35µA compared to 59.4µA in the ADCMP396ARZ-RL7, resulting in extended battery life.

Q: Do both devices meet the same regulatory and environmental standards?

A: Yes. Both the LM339LVPWR and ADCMP396ARZ-RL7 are ROHS3 compliant with MSL Level 1 moisture sensitivity ratings, indicating equivalent environmental qualification and regulatory compliance for industrial and commercial applications.

Q: What is the impact of the 600ns propagation delay specification on the LM339LVPWR?

A: The 600ns maximum propagation delay defines the time interval between input signal transition and output response. This specification is critical for high-speed signal detection and timing-sensitive applications. The ADCMP396ARZ-RL7 propagation delay specification was not provided in the available data.

Q: Can these devices operate at supply voltages below 2.3V?

A: The LM339LVPWR operates at supply voltages as low as 1.65V. The ADCMP396ARZ-RL7 minimum supply voltage is 2.3V. Applications requiring sub-2.3V operation must use the LM339LVPWR.