LMP7300MMX/NOPB Equivalent & Substitute Parts

Part Overview

The LMP7300MMX/NOPB is a single-channel comparator with integrated voltage reference manufactured by Texas Instruments. This CMOS, open-collector, TTL output device operates across a wide supply voltage range (2.7V to 12V single supply, ±1.35V to ±6V dual supply) and is housed in an 8-VSSOP surface-mount package. The device is classified as Active product status with full RoHS3 compliance. Equivalent and substitute parts are identified when identical or functionally compatible electrical parameters and mechanical specifications are maintained within the allowed tolerances for this comparator category.

Substiute Parts

LMP7300MMX/NOPB

Texas InstrumentsIn Stock: 2234LMP7300MMX/NOPB Datasheet

Current PartRFQ

LMP7300MM/NOPB

Texas InstrumentsIn Stock: 1211LMP7300MM/NOPB Datasheet

Parametric EquivalentRFQ

LMP7300MME/NOPB

Texas InstrumentsIn Stock: 2656LMP7300MME/NOPB Datasheet

Parametric EquivalentRFQ

MAX931EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1717MAX931EPA+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMP7300MMX/NOPB are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Same Electrical Performance, Different Packaging):

• LMP7300MM/NOPB (Cut Tape & Digi-Reel packaging variant)
• LMP7300MME/NOPB (Tape & Reel packaging variant)

These parts maintain identical electrical specifications including supply voltage range (2.7V ~ 12V / ±1.35V ~ ±6V), input offset voltage (1mV @ 5V), quiescent current (13µA), CMRR/PSRR (100dB), propagation delay (15µs), hysteresis (1mV), and operating temperature range (-40°C ~ 125°C). All three variants use the same 8-VSSOP surface-mount package with identical mechanical dimensions. The substitution is valid based on packaging format differences only (Tape & Reel vs. Cut Tape & Digi-Reel).

Manufacturer Recommended Substitute (Different Package, Relaxed Electrical Specifications):

• MAX931EPA+ (Analog Devices Inc./Maxim Integrated)

The MAX931EPA+ is a through-hole 8-DIP package alternative with comparable but not identical electrical characteristics. This part is suitable for applications where through-hole mounting is required or where relaxed specifications are acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Surface-Mount Replacement: Select LMP7300MM/NOPB or LMP7300MME/NOPB. Both parts maintain identical electrical performance and mechanical compatibility with the LMP7300MMX/NOPB. The choice between these variants depends on procurement packaging requirements: LMP7300MM/NOPB is available in Cut Tape & Digi-Reel format, while LMP7300MME/NOPB is supplied in Tape & Reel format. All three variants are Active status products with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

For Through-Hole PCB Assembly: The MAX931EPA+ is suitable when through-hole mounting is required. This part operates across a slightly narrower supply voltage range (2.5V ~ 11V single supply, ±1.25V ~ ±5.5V dual supply) and exhibits relaxed electrical specifications: input offset voltage of 10mV (versus 1mV), lower quiescent current of 4µA (versus 13µA), reduced CMRR/PSRR of 80dB (versus 100dB), and increased hysteresis of 50mV (versus 1mV). The MAX931EPA+ also has a reduced operating temperature upper limit of 85°C (versus 125°C). This part is Active status and RoHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can LMP7300MM/NOPB and LMP7300MME/NOPB be used interchangeably with LMP7300MMX/NOPB?

A: Yes. All three parts are parametric equivalents with identical electrical specifications and the same 8-VSSOP surface-mount package. The differences are limited to packaging format (Tape & Reel versus Cut Tape & Digi-Reel). PCB layout, schematic design, and electrical performance remain unchanged.

Q: What are the key differences between the LMP7300 series and the MAX931EPA+?

A: The MAX931EPA+ differs in three critical areas: (1) Package type—8-DIP through-hole versus 8-VSSOP surface-mount; (2) Electrical specifications—relaxed input offset voltage (10mV vs. 1mV), lower quiescent current (4µA vs. 13µA), reduced CMRR/PSRR (80dB vs. 100dB), and higher hysteresis (50mV vs. 1mV); (3) Operating temperature range—-40°C to 85°C versus -40°C to 125°C. The MAX931EPA+ is suitable for applications where through-hole assembly is required and where the relaxed specifications are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LMP7300MM/NOPB, LMP7300MME/NOPB, and MAX931EPA+ are all RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What is the impact of the 50mV hysteresis in the MAX931EPA+ compared to the 1mV hysteresis in the LMP7300 series?

A: Hysteresis determines the voltage difference between the rising and falling threshold points. The MAX931EPA+ has 50mV hysteresis, which provides greater noise immunity but reduces precision in threshold detection. The LMP7300 series with 1mV hysteresis is suitable for precision comparator applications requiring tight threshold control. Application requirements determine which hysteresis specification is appropriate.

Q: Can the MAX931EPA+ operate at temperatures above 85°C?

A: No. The MAX931EPA+ is rated for -40°C to 85°C operation. The LMP7300 series supports extended temperature operation up to 125°C. For applications requiring operation above 85°C, the LMP7300 series is required.

Q: What is the significance of the 100dB CMRR and PSRR in the LMP7300 series?

A: Common-Mode Rejection Ratio (CMRR) and Power Supply Rejection Ratio (PSRR) of 100dB indicate superior rejection of common-mode input signals and power supply noise. The LMP7300 series provides 20dB better rejection than the MAX931EPA+ (80dB), making it more suitable for applications with noisy signal environments or unstable power supplies.