LMC7225IM5X Equivalent & Substitute Parts

Part Overview

The LMC7225IM5X is a general-purpose comparator IC manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device features open-drain output architecture with single/dual supply voltage operation (2V ~ 8V, ±1V ~ 4V) and is designed for precision voltage comparison applications. The LMC7225IM5X carries an obsolete product status, making equivalent and substitute parts necessary for ongoing design support, production continuity, and new project implementations. Substitute parts must maintain functional equivalence through matching output type, supply voltage compatibility, and package form factor suitability.

Substiute Parts

LMC7225IM5X

Texas InstrumentsIn Stock: 5607LMC7225IM5X Datasheet

Current PartRFQ

LMC7225IM5X/NOPB

Texas InstrumentsIn Stock: 13244LMC7225IM5X/NOPB Datasheet

DirectRFQ

BU7230G-TR

Rohm SemiconductorIn Stock: 3950BU7230G-TR Datasheet

MFR RecommendedRFQ

LMV331SQ3T2G

onsemiIn Stock: 23344LMV331SQ3T2G Datasheet

MFR RecommendedRFQ

MAX40002ANS02+T

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

MFR RecommendedRFQ

MAX40003ANS02+

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

MFR RecommendedRFQ

TC75S59F,LF

Toshiba Semiconductor and StorageIn Stock: 1152TC75S59F,LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMC7225IM5X are classified based on strict adherence to the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Output Type: Open-Drain (mandatory)
• Number of Elements: 1 (mandatory)
• Supply Voltage Range: Must encompass or overlap with 2V ~ 8V single supply or ±1V ~ 4V dual supply
• Package Compatibility: Surface mount packages (SOT-23-5, SC-74A, SOT-753, or equivalent pin-compatible alternatives)
• Mounting Type: Surface Mount (mandatory)
• Operating Temperature Range: Must support -40°C ~ 85°C minimum

Substitute Classification:

Direct Equivalent (Identical Specifications):

• LMC7225IM5X/NOPB: Identical electrical specifications, active product status, tape & reel packaging

Functional Equivalents (Compatible Electrical Performance):

• BU7230G-TR: CMOS comparator, open-drain output, overlapping supply voltage (1.8V ~ 5.5V), SC-74A package, faster propagation delay (1.8µs typical)
• LMV331SQ3T2G: General-purpose comparator, open-drain output, supply voltage 2.7V ~ 5V, SC-88A package, faster propagation delay (1.5µs)
• TC75S59F,LF: General-purpose comparator, open-drain output, supply voltage 1.8V ~ 7V, SC-74A package, faster propagation delay (200ns)

Functional Equivalents with Integrated Features:

• MAX40002ANS02+T: Comparator with integrated voltage reference, open-drain output, supply voltage 1.7V ~ 5.5V, 4-WLP package, includes 8mV hysteresis
• MAX40003ANS02+: Comparator with integrated voltage reference, open-drain output, supply voltage 1.7V ~ 5.5V, 4-WLP package, includes 8mV hysteresis

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): LMC7225IM5X/NOPB is the primary direct equivalent. This part maintains identical electrical specifications and operating characteristics while offering active product status and ROHS3 compliance. The transition from the obsolete LMC7225IM5X to LMC7225IM5X/NOPB requires no circuit redesign and provides long-term supply availability.

For Supply Voltage Compatibility Across Extended Range: TC75S59F,LF extends the upper supply voltage limit to 7V (versus 8V maximum for LMC7225IM5X) and offers significantly faster propagation delay (200ns typical versus 29µs maximum). This part is suitable for applications requiring faster response times and operates across the full temperature range of the original device. ROHS3 compliance and active product status ensure design continuity.

For Low-Power Applications: BU7230G-TR provides CMOS architecture with reduced quiescent current (15µA maximum versus 1µA for LMC7225IM5X) and faster propagation delay (1.8µs typical). Supply voltage range 1.8V ~ 5.5V covers the lower end of the original specification. This part is suitable for battery-powered or low-power designs where propagation delay is not critical.

For Integrated Reference Voltage Applications: MAX40002ANS02+T and MAX40003ANS02+ incorporate integrated voltage reference functionality, eliminating external reference components. These parts operate across 1.7V ~ 5.5V supply range and extend the operating temperature to 125°C. The 4-WLP package requires PCB layout considerations for thermal management and signal integrity. These parts are suitable for applications where space savings and integrated functionality justify package transition.

For Package-Constrained Designs: LMV331SQ3T2G offers SC-88A (SC-70-5/SOT-353) package, a smaller footprint alternative to SOT-23-5. Supply voltage range 2.7V ~ 5V covers the mid-range of the original specification. Higher output current capability (84mA @ 5V) and faster propagation delay (1.5µs) provide performance advantages. Higher quiescent current (150µA maximum) may impact low-power applications.

Compliance Considerations: All substitute parts except LMC7225IM5X/NOPB require evaluation against specific application compliance requirements. LMC7225IM5X/NOPB maintains ROHS3 compliance matching modern manufacturing standards. All substitute parts carry ROHS3 compliance, supporting RoHS-regulated markets.

Frequently Asked Questions (FAQ)

Q: Can LMC7225IM5X/NOPB be used as a direct drop-in replacement for LMC7225IM5X?

A: Yes. LMC7225IM5X/NOPB is electrically and mechanically identical to LMC7225IM5X. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). No circuit modifications are required. The part number suffix "/NOPB" indicates lead-free, RoHS-compliant packaging.

Q: What are the key differences between general-purpose and CMOS comparator types in this list?

A: General-purpose comparators (LMC7225IM5X, LMV331SQ3T2G, TC75S59F,LF) use bipolar or mixed-signal architecture. CMOS comparators (BU7230G-TR) offer lower quiescent current and reduced power consumption, making them suitable for battery-powered applications. Both types maintain open-drain output architecture and are functionally compatible within specified supply voltage ranges.

Q: Are the MAX40002ANS02+T and MAX40003ANS02+ interchangeable?

A: Yes, within the scope of this substitution analysis. Both parts share identical electrical specifications, supply voltage range (1.7V ~ 5.5V), propagation delay (9µs typical), and integrated voltage reference functionality. The primary difference is base product number (MAX40002 versus MAX40003), which may reflect internal design variations not detailed in the provided specifications.

Q: What package considerations apply when substituting LMV331SQ3T2G for LMC7225IM5X?

A: LMV331SQ3T2G uses SC-88A (SC-70-5/SOT-353) package, which is physically smaller than SOT-23-5. PCB layout modifications are required, including trace routing and component placement adjustments. Pin configuration must be verified against the original design schematic. This substitution is suitable for space-constrained applications where package transition is acceptable.

Q: What package considerations apply when substituting MAX40002ANS02+T or MAX40003ANS02+ for LMC7225IM5X?

A: Both MAX parts use 4-WLP (0.73x0.73) package, a ball grid array format significantly smaller than SOT-23-5. This substitution requires substantial PCB redesign, including via placement for thermal management and signal integrity considerations. This substitution is suitable only for applications where integrated voltage reference functionality justifies complete layout redesign.

Q: How does propagation delay affect circuit performance when substituting parts?

A: Propagation delay determines the time interval between input signal transition and output response. LMC7225IM5X specifies 29µs maximum delay. Substitute parts offer faster delays (TC75S59F,LF at 200ns, LMV331SQ3T2G at 1.5µs, BU7230G-TR at 1.8µs typical). Faster propagation delay improves circuit response time but does not affect functional compatibility. Applications with timing-critical requirements benefit from faster substitutes; applications with relaxed timing requirements are unaffected.

Q: What supply voltage range must be verified when selecting a substitute?

A: The original LMC7225IM5X operates across 2V ~ 8V single supply or ±1V ~ 4V dual supply. Substitute parts must support the specific supply voltage configuration used in the application. For example, BU7230G-TR (1.8V ~ 5.5V) is unsuitable for applications requiring 8V single supply operation. LMV331SQ3T2G (2.7V ~ 5V) is unsuitable for applications requiring 2V minimum supply voltage. Verify the application's actual supply voltage requirement against each substitute's specification.

Q: Are all substitute parts suitable for the full -40°C ~ 85°C operating temperature range?

A: No. LMV331SQ3T2G does not specify operating temperature range in the provided data. MAX40002ANS02+T and MAX40003ANS02+ extend the upper temperature limit to 125°C, exceeding the original specification. All other parts support -40°C ~ 85°C. Applications requiring full temperature range operation must verify substitute part specifications against actual temperature requirements.

Q: What is the significance of RoHS compliance status in substitute selection?

A: RoHS non-compliant parts (LMC7225IM5X) contain restricted substances and are subject to regulatory restrictions in certain markets. ROHS3-compliant parts (all substitutes except LMC7225IM5X) meet current environmental regulations and are suitable for regulated markets. New designs should prioritize ROHS3-compliant substitutes to ensure long-term market access and regulatory compliance.