LPV324MTX Equivalent & Substitute Parts Reference

Part Overview

The LPV324MTX is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail device in a 14-TSSOP surface-mount package. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The LPV324MTX operates across a 2.7 V to 5 V supply range and is suitable for low-power analog signal processing applications requiring rail-to-rail output capability.

Substitute parts are necessary due to the Last Time Buy status of the LPV324MTX. Alternative components with equivalent or superior electrical characteristics and compatible packaging enable continued system design and production without redesign constraints.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	152	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply (x4 Channels)	28	µA
Current - Output / Channel	16	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 85	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the LPV324MTX is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of Circuits: 4 (mandatory)
Output Type: Rail-to-Rail (mandatory)
Package / Case: 14-TSSOP or equivalent 14-pin TSSOP footprint (mandatory)
Mounting Type: Surface Mount (mandatory)
Operating Temperature Range: Minimum -40°C, maximum ≥85°C (mandatory)
Voltage Supply Span: Minimum ≤2.7 V, maximum ≥5 V (mandatory)

Secondary Performance Parameters:

Slew Rate: 0.1 V/µs or higher
Gain Bandwidth Product: 152 kHz or higher
Current - Input Bias: 2 nA or lower
Voltage - Input Offset: 1.5 mV or lower
Current - Supply: 28 µA or lower per 4 channels
Current - Output / Channel: 16 mA or higher

Substitute parts are grouped into two categories: direct packaging equivalents (Tape & Reel variant of the same base product) and functionally equivalent alternatives from other manufacturers that meet or exceed the primary compatibility criteria and secondary performance parameters.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (kHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Product Status
LPV324MTX	Texas Instruments	General Purpose	0.1	152	2	1.5	28	16	2.7	5	-40 to 85	14-TSSOP	Last Time Buy
LPV324MTX/NOPB	Texas Instruments	General Purpose	0.1	152	2	1.5	28	16	2.7	5	-40 to 85	14-TSSOP	Active
BD12734FVJ-E2	Rohm Semiconductor	General Purpose	0.4	1000	50	1	1200	12	1.8	5	-40 to 85	14-TSSOP	Active
LMR934FVJ-E2	Rohm Semiconductor	General Purpose	0.35	1400	5	1	250	90	1.8	5	-40 to 85	14-TSSOP	Active
MCP6474T-E/ST	Microchip Technology	CMOS	1.1	2000	1	1.5	100	32	2	5.5	-40 to 125	14-TSSOP	Active
MCP6484T-E/ST	Microchip Technology	General Purpose	2.7	4000	1	1.5	240	12	2.2	5.5	-40 to 125	14-TSSOP	Active
BU7487SFV-E2	Rohm Semiconductor	CMOS	10	10000	0.001	1	6000	12	3	5.5	-40 to 105	14-LSSOP	Active
LMR344FVJ-E2	Rohm Semiconductor	CMOS	1	2000	0.001	0.25	400	113	2.7	5.5	-40 to 85	14-TSSOP	Active

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Specifications):

LPV324MTX/NOPB is the direct equivalent of LPV324MTX, differing only in packaging format (Tape & Reel versus Cut Tape). Both components share identical electrical characteristics, operating parameters, and compliance certifications. Selection between these two variants depends solely on procurement and assembly requirements. LPV324MTX/NOPB is classified as Active product status with significantly higher inventory availability (10,300 pieces versus 1,631 pieces), making it the preferred choice for new designs and production continuity.

General Purpose Amplifier Substitutes (Active Product Status):

LMR934FVJ-E2 (Rohm Semiconductor) and BD12734FVJ-E2 (Rohm Semiconductor) are general-purpose amplifier alternatives with 4-circuit rail-to-rail configuration in 14-TSSOP packaging. Both components meet the mandatory compatibility criteria and operate within the required temperature range (-40°C to 85°C). LMR934FVJ-E2 provides superior performance with higher slew rate (0.35 V/µs), higher gain bandwidth product (1.4 MHz), and significantly higher output current capability (90 mA per channel). BD12734FVJ-E2 offers extended lower supply voltage operation (1.8 V minimum) and lower input offset voltage (1 mV). Both components are ROHS3 compliant with MSL 1 rating.

CMOS Amplifier Substitutes (Enhanced Performance):

MCP6474T-E/ST and MCP6484T-E/ST (Microchip Technology) are CMOS-based 4-circuit rail-to-rail amplifiers in 14-TSSOP packaging with Active product status. MCP6474T-E/ST provides extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (2 V). MCP6484T-E/ST offers significantly higher slew rate (2.7 V/µs) and gain bandwidth product (4 MHz), suitable for applications requiring faster signal processing. Both components are ROHS3 compliant with MSL 1 rating.

LMR344FVJ-E2 (Rohm Semiconductor) is a CMOS amplifier with 14-TSSOP packaging, offering ultra-low input bias current (1 pA), superior input offset voltage (250 µV), and high output current capability (113 mA per channel). Operating temperature range matches the LPV324MTX (-40°C to 85°C). This component is suitable for precision analog applications.

BU7487SFV-E2 (Rohm Semiconductor) is a high-performance CMOS amplifier with 14-LSSOP packaging (mechanically compatible with 14-TSSOP footprint). This component features the highest slew rate (10 V/µs), highest gain bandwidth product (10 MHz), and ultra-low input bias current (1 pA). Operating temperature range extends to 105°C. Minimum supply voltage is 3 V, which exceeds the LPV324MTX requirement of 2.7 V.

Product Status Consideration:

All recommended substitute parts are classified as Active product status, ensuring long-term availability and continued manufacturing support. The LPV324MTX Last Time Buy status necessitates transition to one of these alternatives for designs requiring extended production life.

Frequently Asked Questions (FAQ)

Q: Can LPV324MTX/NOPB be used as a direct replacement for LPV324MTX?

A: Yes. LPV324MTX/NOPB is electrically and functionally identical to LPV324MTX. The difference is packaging format: LPV324MTX is supplied in Cut Tape (CT) & Digi-Reel format, while LPV324MTX/NOPB is supplied in Tape & Reel (TR) format. Both use the same 14-TSSOP package and have identical electrical specifications. Selection depends on assembly line requirements and procurement preferences.

Q: What is the primary reason to substitute the LPV324MTX?

A: The LPV324MTX is classified as Last Time Buy, indicating Texas Instruments has discontinued production. Inventory is limited to 1,631 pieces. For designs requiring extended production life or new applications, substitution to an Active product status component is necessary to ensure long-term supply chain continuity.

Q: Are all substitute parts pin-compatible with the LPV324MTX?

A: All substitute parts listed use the 14-TSSOP or 14-LSSOP package format with identical 0.173" width and 4.40mm body dimensions. Pin configuration for 4-circuit operational amplifiers in this package class is standardized. However, electrical characteristics differ; verify specific application requirements before substitution.

Q: What is the difference between general-purpose and CMOS amplifier substitutes?

A: General-purpose amplifiers (LMR934FVJ-E2, BD12734FVJ-E2, MCP6484T-E/ST) use bipolar or mixed-signal technology and are optimized for moderate bandwidth and output current applications. CMOS amplifiers (MCP6474T-E/ST, LMR344FVJ-E2, BU7487SFV-E2) feature ultra-low input bias current (1 pA), higher slew rates, and extended temperature ranges. CMOS variants are preferred for precision analog signal conditioning and high-impedance input applications.

Q: Can BU7487SFV-E2 be used if the application requires 2.7 V minimum supply voltage?

A: No. BU7487SFV-E2 requires a minimum supply voltage of 3 V, which exceeds the LPV324MTX specification of 2.7 V minimum. Applications operating at 2.7 V supply voltage must use LPV324MTX/NOPB, BD12734FVJ-E2, LMR934FVJ-E2, or LMR344FVJ-E2.

Q: Which substitute provides the best performance improvement over LPV324MTX?

A: BU7487SFV-E2 offers the most significant performance enhancement with 100× higher slew rate (10 V/µs versus 0.1 V/µs), 65× higher gain bandwidth product (10 MHz versus 152 kHz), and ultra-low input bias current (1 pA versus 2 nA). However, this component requires minimum 3 V supply voltage and extended temperature range to 105°C. Selection depends on specific application requirements and supply voltage constraints.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All components are suitable for lead-free assembly processes and meet environmental compliance requirements equivalent to the LPV324MTX.

Q: What is the inventory status of substitute parts?

A: LPV324MTX/NOPB has the highest inventory availability at 10,300 pieces. Among other substitutes, MCP6474T-E/ST (3,733 pieces), LMR934FVJ-E2 (3,126 pieces), and BU7487SFV-E2 (7,900 pieces) have substantial stock levels. BD12734FVJ-E2 (906 pieces) and LMR344FVJ-E2 (870 pieces) have lower availability. Verify current inventory status with suppliers before design commitment.

Q: Can substitute parts be mixed in the same circuit board design?

A: Yes, if the application uses multiple operational amplifier circuits. However, mixing different amplifier types (general-purpose and CMOS) in the same design may introduce performance inconsistencies in matched-pair applications. For precision analog circuits requiring matched characteristics, use identical part numbers across all operational amplifier positions.

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