LMV7239 MWC Equivalent & Substitute Parts

Part Overview

The LMV7239 MWC is a general-purpose comparator IC manufactured by Texas Instruments, supplied in Wafersale (die) packaging. This component features push-pull output configuration and operates across a 2.7V to 5.5V supply voltage range. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. Substitute parts must maintain functional compatibility through matching electrical specifications and output characteristics while accommodating different package formats available in current production.

Key Parameters

Parameter	LMV7239 MWC	Unit
Type	General Purpose Comparator	—
Output Type	Push-Pull	—
Number of Elements	1	—
Voltage - Supply, Single/Dual (±)	2.7V ~ 5.5V	V
Voltage - Input Offset (Max)	6mV @ 5V	mV
Current - Input Bias (Max)	0.4µA @ 5V	µA
Current - Quiescent (Max)	95µA	µA
CMRR, PSRR (Typ)	67dB CMRR, 85dB PSRR	dB
Propagation Delay (Max)	62ns	ns
Operating Temperature	-40°C ~ 85°C	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV7239 MWC is determined by the following critical parameters:

Functional Compatibility Criteria:

Output Type: Push-Pull configuration required
Number of Elements: Single comparator (1)
Supply Voltage Range: Minimum 2.7V support; upper limit 5.5V or higher acceptable
Input Offset Voltage: Maximum 6mV @ 5V or lower preferred
Input Bias Current: Maximum 0.4µA @ 5V or lower preferred
Quiescent Current: Maximum 95µA or lower preferred
CMRR/PSRR: Minimum 67dB CMRR and 85dB PSRR or equivalent performance
Propagation Delay: Maximum 62ns or lower preferred
Operating Temperature: Minimum -40°C to 85°C range

Package Considerations: The original LMV7239 MWC is supplied as die (Wafersale). Substitute parts are available in standard surface-mount packages including SOT-23-5, SC-70-5, 8-SOIC, and 6-WLP formats, enabling integration into conventional PCB assembly processes.

Product Status: All identified substitute parts maintain active production status with ROHS3 compliance and MSL 1 rating, ensuring long-term availability and environmental regulatory conformance.

Parameter Comparison

Parameter	LMV7239 MWC	MAX40009ANT+T	TS3011ICT	TS3021ILT	TS7211AILT	TS861ILT	TS881ILT	Unit
Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	—
Output Type	Push-Pull	Push-Pull	Push-Pull, Rail-to-Rail	Push-Pull	Push-Pull	Push-Pull	Push-Pull	—
Number of Elements	1	1	1	1	1	1	1	—
Voltage - Supply (Min-Max)	2.7V ~ 5.5V	1.7V ~ 5.5V	2.2V ~ 5V	1.8V ~ 5V	2.7V ~ 10V	2.7V ~ 10V	0.85V ~ 5.5V	V
Voltage - Input Offset (Max)	6mV @ 5V	5mV	—	6mV @ 5V	7mV @ 5V	15mV @ 5V	6mV @ 5V	mV
Current - Input Bias (Max)	0.4µA @ 5V	0.14µA	—	0.16µA @ 5V	3pA @ 5V	300pA @ 5V	10pA	µA / pA
Current - Quiescent (Max)	95µA	17µA	1.1mA	90µA	12µA	16µA	500nA	µA / mA / nA
CMRR (Typ)	67dB	—	—	79dB	70dB	70dB	78dB	dB
PSRR (Typ)	85dB	—	—	—	80dB	—	—	dB
Propagation Delay (Max)	62ns	850ns (Typ)	—	105ns	—	2µs	22µs	ns / µs
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	—	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	°C
Package / Case	Die	6-XFBGA, WLPBGA	5-TSSOP, SC-70-5, SOT-353	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	—

Engineering Selection Recommendations

Primary Substitute: TS3021ILT

The TS3021ILT (STMicroelectronics) provides the closest functional alignment to the LMV7239 MWC. This part maintains identical input offset voltage specification (6mV @ 5V), comparable input bias current (0.16µA @ 5V versus 0.4µA), and superior quiescent current performance (90µA versus 95µA). The TS3021ILT operates across 1.8V to 5V supply range, encompassing the original 2.7V to 5.5V specification. CMRR performance exceeds the original at 79dB. The SOT-23-5 package enables direct integration into standard PCB assembly workflows. Product status is active with ROHS3 compliance and MSL 1 rating.

Secondary Substitute: TS7211AILT

The TS7211AILT (STMicroelectronics) offers extended supply voltage range (2.7V to 10V) and superior quiescent current (12µA). Input offset voltage is 7mV @ 5V, marginally higher than the original specification. Input bias current is exceptionally low at 3pA @ 5V. CMRR and PSRR performance (70dB and 80dB respectively) meet or exceed original specifications. Operating temperature range matches the original (-40°C to 85°C). SOT-23-5 package format supports standard assembly processes. Product status is active with full compliance certifications.

Alternative Substitute: TS881ILT

The TS881ILT (STMicroelectronics) provides the widest supply voltage range (0.85V to 5.5V) and lowest quiescent current (500nA). Input offset voltage and bias current specifications match the original. Operating temperature extends to 125°C. Propagation delay is significantly longer at 22µs, suitable for applications not requiring fast switching. SOT-23-5 package format. Product status is active with ROHS3 compliance.

Compact Package Alternative: MAX40009ANT+T

The MAX40009ANT+T (Analog Devices Inc./Maxim Integrated) offers the smallest footprint in 6-WLP (1.08x0.73) package format. Input offset voltage is superior at 5mV. Supply voltage range extends to 1.7V minimum. Quiescent current is exceptionally low at 17µA. Product status is active with ROHS3 compliance. This option is suitable for space-constrained applications.

Rail-to-Rail Output Option: TS3011ICT

The TS3011ICT (STMicroelectronics) provides rail-to-rail output capability in SC-70-5 package. Supply voltage range is 2.2V to 5V. Quiescent current is higher at 1.1mA. Product status is active with ROHS3 compliance. This option is applicable where rail-to-rail output swing is required.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring environmental regulatory conformance and unlimited moisture sensitivity handling.

Frequently Asked Questions (FAQ)

Q1: Can TS3021ILT directly replace LMV7239 MWC in all applications?

The TS3021ILT provides functional equivalence for general-purpose comparator applications within the specified electrical parameter ranges. The primary difference is package format: LMV7239 MWC is supplied as die (Wafersale), while TS3021ILT is available in SOT-23-5. If the original design uses die-level integration, package conversion is required. Electrical specifications are compatible within the 2.7V to 5V operating range.

Q2: What is the significance of the supply voltage range difference?

The LMV7239 MWC operates from 2.7V to 5.5V. Most substitute parts support this range or extend it. TS3021ILT operates from 1.8V to 5V, which encompasses the original specification but does not extend to 5.5V. TS7211AILT and TS861ILT extend to 10V, providing additional design flexibility. Selection depends on the specific supply voltage requirements of the target application.

Q3: How do propagation delay differences affect circuit performance?

The LMV7239 MWC specifies 62ns maximum propagation delay. TS3021ILT provides 105ns, TS861ILT provides 2µs, and TS881ILT provides 22µs. For high-speed switching applications requiring sub-100ns response, TS3021ILT is suitable. For lower-speed applications, TS861ILT and TS881ILT are acceptable. Application timing requirements determine the appropriate selection.

Q4: What are the package format implications for PCB assembly?

The original LMV7239 MWC is supplied as die, requiring specialized die-attach and wire-bonding assembly processes. All substitute parts are available in standard surface-mount packages (SOT-23-5, SC-70-5, 8-SOIC, 6-WLP), enabling conventional pick-and-place assembly. Package selection depends on PCB layout constraints and available assembly capabilities.

Q5: Are all substitute parts suitable for automotive applications?

The TS3021HIYLT variant (not the standard TS3021ILT) carries AEC-Q100 qualification for automotive use. Standard industrial-grade parts (TS3021ILT, TS7211AILT, TS861ILT, TS881ILT, MAX40009ANT+T) are suitable for commercial and industrial applications. Automotive applications requiring AEC-Q100 qualification must specify the HIYLT variant.

Q6: How do input bias current specifications affect circuit design?

The LMV7239 MWC specifies 0.4µA maximum input bias current. TS3021ILT provides 0.16µA, TS7211AILT provides 3pA, and TS881ILT provides 10pA. Lower input bias current reduces loading on signal sources and improves accuracy in high-impedance circuits. Selection depends on source impedance and accuracy requirements.

Q7: What is the practical difference between CMRR and PSRR specifications?

CMRR (Common Mode Rejection Ratio) measures the comparator's ability to reject signals common to both inputs. PSRR (Power Supply Rejection Ratio) measures rejection of power supply noise. The LMV7239 MWC specifies 67dB CMRR and 85dB PSRR. Most substitutes meet or exceed these values. Higher values indicate better noise immunity in noisy environments.

Q8: Can TS881ILT be used in applications requiring fast response?

The TS881ILT specifies 22µs maximum propagation delay, which is significantly longer than the LMV7239 MWC (62ns). This part is suitable for low-speed threshold detection and window comparator applications. For applications requiring response times under 1µs, TS3021ILT (105ns) or TS7211AILT are more appropriate.

Q9: What is the significance of the 6-WLP package in MAX40009ANT+T?

The 6-WLP (Wafer Level Package) format provides the smallest footprint (1.08x0.73mm) among available substitutes. This package is suitable for space-constrained applications such as portable devices and compact modules. Assembly requires BGA-capable equipment. Standard SOT-23-5 packages offer larger footprints but simpler assembly requirements.

Q10: Are there supply chain advantages to selecting specific substitute parts?

Inventory levels vary among substitute parts. TS3021ILT maintains 35,302 pieces in stock, TS7211AILT maintains 26,300 pieces, and TS881ILT maintains 4,742 pieces. Higher inventory levels indicate better long-term availability. All parts maintain active production status with ROHS3 compliance, ensuring continued supply.

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