LMC7225IMX Equivalent & Substitute Parts

Part Overview

The LMC7225IMX is a general-purpose comparator IC manufactured by Texas Instruments, featuring open-drain output configuration in an 8-SOIC surface-mount package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and production continuity. The LMC7225IMX operates across a supply voltage range of 2V to 8V (single supply) or ±1V to ±4V (dual supply), with typical output current of 30mA and quiescent current of 1µA maximum.

Substiute Parts

LMC7225IMX

Texas InstrumentsIn Stock: 3900LMC7225IMX Datasheet

Current PartRFQ

LMC7215IMX/NOPB

Texas InstrumentsIn Stock: 3308LMC7215IMX/NOPB Datasheet

MFR RecommendedRFQ

LMC7225IM5/NOPB

Texas InstrumentsIn Stock: 2201LMC7225IM5/NOPB Datasheet

MFR RecommendedRFQ

ADCMP354YKSZ-REEL7

Analog Devices Inc.In Stock: 43819ADCMP354YKSZ-REEL7 Datasheet

MFR RecommendedRFQ

BU7230G-TR

Rohm SemiconductorIn Stock: 3950BU7230G-TR Datasheet

MFR RecommendedRFQ

LMV331ICT

STMicroelectronicsIn Stock: 1766LMV331ICT Datasheet

MFR RecommendedRFQ

LMV331SN3T1G

onsemiIn Stock: 40196LMV331SN3T1G Datasheet

MFR RecommendedRFQ

LMV331SQ3T2G

onsemiIn Stock: 23344LMV331SQ3T2G Datasheet

MFR RecommendedRFQ

MAX40002ANS02+T

Analog Devices Inc./Maxim IntegratedIn Stock: 878MAX40002ANS02+T Datasheet

MFR RecommendedRFQ

MAX40002ANS12+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3484MAX40002ANS12+T Datasheet

MFR RecommendedRFQ

MAX40002AUK02+

Analog Devices Inc./Maxim IntegratedIn Stock: 855MAX40002AUK02+ Datasheet

MFR RecommendedRFQ

MAX40003ANS02+

Analog Devices Inc./Maxim IntegratedIn Stock: 1145MAX40003ANS02+ Datasheet

MFR RecommendedRFQ

TC75S59FU(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 4587TC75S59FU(TE85L,F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMC7225IMX is determined by the following critical parameters:

Output Configuration: Open-drain output is mandatory for direct functional replacement.

Supply Voltage Range: Substitute parts must support the 2V to 8V single-supply range or equivalent dual-supply capability (±1V to ±4V).

Electrical Performance: Input offset voltage, quiescent current, propagation delay, and output current must remain within acceptable operational margins for the target application.

Package Compatibility: Physical package type determines PCB layout compatibility. The 8-SOIC package can be replaced with alternative packages only if circuit board redesign is acceptable.

Compliance Status: Active product status and RoHS3 compliance are preferred for new designs to ensure long-term availability and regulatory conformance.

Substitute parts are grouped into two categories:

Category 1 - Direct Package Replacement (8-SOIC): LMC7215IMX/NOPB maintains identical pinout and package footprint, enabling direct board-level substitution.

Category 2 - Functional Equivalents (Alternative Packages): LMC7225IM5/NOPB, ADCMP354YKSZ-REEL7, BU7230G-TR, LMV331ICT, LMV331SN3T1G, LMV331SQ3T2G, MAX40002ANS02+T, MAX40002ANS12+T, and MAX40002AUK02+ provide equivalent electrical performance with different package footprints, requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Board-Level Substitution (No Layout Changes):

LMC7215IMX/NOPB is the primary recommendation. This Texas Instruments comparator maintains identical 8-SOIC package footprint and pinout compatibility with the LMC7225IMX. Key differences include push-pull output configuration (versus open-drain) and improved propagation delay (24µs versus 29µs). The device is active and RoHS3 compliant, ensuring long-term availability and regulatory conformance for new production.

For Applications Requiring Reduced Package Size:

LMC7225IM5/NOPB provides functional equivalence in SOT-23-5 package, reducing board area by approximately 60% compared to 8-SOIC. Electrical parameters remain identical to the original LMC7225IMX, including open-drain output and 29µs propagation delay. This option requires PCB redesign but maintains Texas Instruments sourcing continuity.

For Extended Temperature Range (-40°C to 125°C):

MAX40002ANS02+T or MAX40002ANS12+T offer extended operating temperature capability and integrated voltage reference functionality. These Analog Devices/Maxim Integrated devices operate across 1.7V to 5.5V supply range with 8mV hysteresis and 9µs typical propagation delay. The 4-WLP package provides ultra-compact form factor suitable for space-constrained applications.

For High-Speed Applications:

BU7230G-TR (Rohm Semiconductor) and LMV331ICT (STMicroelectronics) deliver significantly faster propagation delays of 1.8µs and 550ns respectively, compared to the original 29µs specification. These devices are suitable for applications requiring rapid comparator response times.

For New Designs with RoHS3 Compliance Requirement:

All substitute parts listed are RoHS3 compliant and carry active product status, making them suitable for new design implementations. Selection should prioritize package compatibility with existing PCB layouts or accommodate redesign timelines.

Frequently Asked Questions (FAQ)

Q: Can LMC7215IMX/NOPB replace LMC7225IMX in existing designs without modification?

A: LMC7215IMX/NOPB maintains identical 8-SOIC package footprint and pinout, enabling direct board-level substitution. However, the output configuration differs: LMC7215IMX features push-pull output while LMC7225IMX uses open-drain. Circuit designs relying on open-drain pull-up behavior must be evaluated for compatibility with push-pull output characteristics.

Q: What is the primary reason for substituting the LMC7225IMX?

A: The LMC7225IMX is classified as obsolete, indicating discontinued manufacturing and declining availability. Substitution ensures design continuity and production supply security. Additionally, the original device is RoHS non-compliant, making substitution necessary for applications subject to RoHS3 regulatory requirements.

Q: Are all substitute parts pin-compatible with the LMC7225IMX?

A: No. Only LMC7215IMX/NOPB maintains identical 8-SOIC pinout. Alternative packages (SOT-23-5, SC-70-4, 5-SSOP, SC-70-5, 5-TSOP, 4-WLP) require PCB layout redesign and schematic modifications. Pin function mapping must be verified against individual device datasheets before implementation.

Q: Which substitute offers the closest electrical performance match?

A: LMC7225IM5/NOPB provides the closest electrical match, maintaining identical input offset voltage (6mV @ 5V), quiescent current (1µA), propagation delay (29µs), and output current (30mA) specifications. The primary difference is package format (SOT-23-5 versus 8-SOIC).

Q: Can I use MAX40002 series devices as direct replacements?

A: MAX40002 series devices (MAX40002ANS02+T, MAX40002ANS12+T, MAX40002AUK02+) provide functional equivalence with integrated voltage reference capability. However, they operate across a narrower supply voltage range (1.7V to 5.5V) compared to the LMC7225IMX (2V to 8V). Applications requiring operation above 5.5V supply voltage are not compatible with MAX40002 devices.

Q: What is the significance of open-drain versus push-pull output?

A: Open-drain output requires external pull-up resistor to establish high logic level, allowing flexible voltage level translation and multiple device wiring. Push-pull output provides both source and sink capability without external components. Circuit designs must accommodate output configuration differences when substituting between these types.

Q: Are substitute parts available in equivalent packaging options?

A: Yes. Multiple package options are available: 8-SOIC (LMC7215IMX/NOPB), SOT-23-5 (LMC7225IM5/NOPB, MAX40002AUK02+), SC-70-4 (ADCMP354YKSZ-REEL7), 5-SSOP (BU7230G-TR), SC-70-5 (LMV331ICT, LMV331SQ3T2G), 5-TSOP (LMV331SN3T1G), and 4-WLP (MAX40002ANS02+T, MAX40002ANS12+T). Package selection depends on PCB layout constraints and thermal management requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed substitute parts carry RoHS3 compliant status, meeting current regulatory requirements for electronic component manufacturing and distribution.