LPV324PWRE4 Equivalent & Substitute Parts

Part Overview

The LPV324PWRE4 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 part is classified as obsolete, indicating it has been discontinued by the manufacturer. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this amplifier configuration.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324PWRE4	—
Manufacturer	Texas Instruments	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40°C ~ 85°C	—
Slew Rate	0.1	V/µs
Gain Bandwidth Product	237	kHz
Current - Input Bias	2	nA
Voltage - Input Offset	1.5	mV
Current - Supply	28	µA (x4 Channels)
Current - Output / Channel	72	mA
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the LPV324PWRE4 is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of circuits: 4 independent amplifier channels
Output type: Rail-to-rail configuration
Package type: 14-TSSOP surface-mount form factor
Supply voltage range: Minimum 2.7 V, maximum 5 V (or higher)
Operating temperature range: -40°C to 85°C (or extended)
Mounting type: Surface mount

Secondary Performance Parameters:

Slew rate: 0.1 V/µs (baseline; higher values acceptable)
Gain bandwidth product: 237 kHz (baseline; higher values acceptable)
Input bias current: 2 nA (baseline; lower values acceptable)
Input offset voltage: 1.5 mV (baseline; lower values acceptable)
Output current per channel: 72 mA (baseline; higher values acceptable)
Supply current: 28 µA per 4 channels (baseline; higher values acceptable)

Substitute parts are grouped into two categories:

Category A: Direct Replacements (Same Base Series) Parts maintaining the LPV324 base product number with alternative packaging configurations. These preserve the original electrical characteristics while offering different supply formats.

Category B: Functional Equivalents (Alternative Manufacturers) Parts from alternative manufacturers (Rohm Semiconductor, Microchip Technology) that meet or exceed the primary compatibility criteria and electrical performance specifications. These include both general-purpose and CMOS amplifier variants.

Parameter Comparison

Parameter	LPV324PWRE4	LMV324MT/NOPB	LMV324MTX/NOPB	LPV324MT/NOPB	LPV324MTX/NOPB	BD12734FVJ-E2	BU7487FV-E2	BU7487SFV-E2	LMR344FVJ-E2	LMR934FVJ-E2	MCP6474-E/ST
Manufacturer	TI	TI	TI	TI	TI	Rohm	Rohm	Rohm	Rohm	Rohm	Microchip
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	CMOS	General Purpose	CMOS
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-LSSOP	14-LSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	1.8 V	3 V	3 V	2.7 V	1.8 V	2 V
Voltage - Supply Span (Max)	5 V	5.5 V	5.5 V	5 V	5 V	5 V	5.5 V	5.5 V	5.5 V	5 V	5.5 V
Operating Temperature (Min)	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C	-40°C
Operating Temperature (Max)	85°C	125°C	125°C	85°C	85°C	85°C	105°C	105°C	85°C	85°C	125°C
Slew Rate	0.1 V/µs	1 V/µs	1 V/µs	0.1 V/µs	0.1 V/µs	0.4 V/µs	10 V/µs	10 V/µs	1 V/µs	0.35 V/µs	1.1 V/µs
Gain Bandwidth Product	237 kHz	1 MHz	1 MHz	152 kHz	152 kHz	1 MHz	10 MHz	10 MHz	2 MHz	1.4 MHz	2 MHz
Current - Input Bias	2 nA	15 nA	15 nA	2 nA	2 nA	50 nA	1 pA	1 pA	1 pA	5 nA	1 pA
Voltage - Input Offset	1.5 mV	1.7 mV	1.7 mV	1.5 mV	1.5 mV	1 mV	1 mV	1 mV	250 µV	1 mV	1.5 mV
Current - Supply	28 µA	410 µA	410 µA	28 µA	28 µA	1.2 mA	6 mA	6 mA	400 µA	250 µA	100 µA
Current - Output / Channel	72 mA	160 mA	160 mA	16 mA	16 mA	12 mA	12 mA	12 mA	113 mA	90 mA	32 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original LPV324PWRE4. The following selection criteria apply based on product status and compliance:

Tier 1: Direct Series Replacements (Recommended for Pin-Compatible Substitution)

LPV324MT/NOPB and LPV324MTX/NOPB maintain the LPV324 base product number and preserve the original electrical characteristics (0.1 V/µs slew rate, 152 kHz gain bandwidth product, 2 nA input bias current). Both are active products with full manufacturer support. LPV324MTX/NOPB offers the highest inventory availability (10,300 units) in tape and reel packaging. These parts are suitable for direct replacement in applications where the original performance envelope is required.

Tier 2: Enhanced Performance Alternatives (Texas Instruments LMV Series)

LMV324MT/NOPB and LMV324MTX/NOPB offer improved performance characteristics (1 V/µs slew rate, 1 MHz gain bandwidth product, 160 mA output current per channel) while maintaining the same 14-TSSOP package footprint and supply voltage range. These parts support extended operating temperature to 125°C. Selection is appropriate for applications requiring higher bandwidth or output current capability within the same package.

Tier 3: Alternative Manufacturer Solutions

Parts from Rohm Semiconductor and Microchip Technology provide functional equivalence with varying performance trade-offs:

BD12734FVJ-E2 (Rohm): General-purpose amplifier with 1 MHz bandwidth and extended supply range (1.8 V minimum). Suitable for low-voltage applications.
BU7487FV-E2 and BU7487SFV-E2 (Rohm): CMOS amplifiers with high slew rate (10 V/µs) and extremely low input bias current (1 pA). Package is 14-LSSOP rather than 14-TSSOP; PCB layout modification required.
LMR344FVJ-E2 (Rohm): CMOS amplifier with 2 MHz bandwidth and 250 µV input offset voltage. Maintains 14-TSSOP package.
LMR934FVJ-E2 (Rohm): General-purpose amplifier with 1.4 MHz bandwidth and extended supply range (1.8 V minimum). Maintains 14-TSSOP package.
MCP6474-E/ST (Microchip): CMOS amplifier with 2 MHz bandwidth and extended operating temperature (125°C). Maintains 14-TSSOP package and supports 2 V minimum supply.

All substitute parts are active products with established supply chains and manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can LPV324MT/NOPB be used as a direct replacement for LPV324PWRE4?

A: Yes. Both parts share the same base product number (LPV324), identical electrical specifications (0.1 V/µs slew rate, 2 nA input bias current, 1.5 mV input offset voltage), and the same 14-TSSOP package. The primary difference is packaging format (tube versus cut tape). Pin configuration and electrical performance are identical.

Q: What is the difference between LPV324MTX/NOPB and LPV324MT/NOPB?

A: Both parts have identical electrical specifications and 14-TSSOP package. The difference is in supply format: LPV324MT/NOPB is supplied in tube packaging, while LPV324MTX/NOPB is supplied in tape and reel format. LPV324MTX/NOPB offers significantly higher inventory availability (10,300 units versus 988 units).

Q: Why would I choose LMV324MT/NOPB over LPV324MT/NOPB?

A: LMV324MT/NOPB provides enhanced performance: 10× higher slew rate (1 V/µs versus 0.1 V/µs), 4× higher gain bandwidth product (1 MHz versus 237 kHz), and 2.2× higher output current per channel (160 mA versus 72 mA). It also supports extended operating temperature to 125°C. Selection depends on application bandwidth and output current requirements. Both maintain the same 14-TSSOP package and 2.7 V to 5.5 V supply range.

Q: Can BU7487FV-E2 be used as a drop-in replacement?

A: BU7487FV-E2 is functionally equivalent but not a drop-in replacement. While it provides superior performance (10 V/µs slew rate, 10 MHz bandwidth, 1 pA input bias current), the package is 14-LSSOP rather than 14-TSSOP. PCB layout modification is required. Pin configuration differs from the original part.

Q: What is the advantage of CMOS amplifiers (BU7487, LMR344, MCP6474) over general-purpose types?

A: CMOS amplifiers feature extremely low input bias current (1 pA versus 2-50 nA), reducing input current errors in high-impedance applications. They typically offer higher slew rates and gain bandwidth products. Trade-offs include higher supply current consumption in some cases and potential noise characteristics differences. Selection depends on specific application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original LPV324PWRE4.

Q: What is the minimum supply voltage for each substitute part?

A: LPV324PWRE4, LPV324MT/NOPB, LPV324MTX/NOPB, LMV324MT/NOPB, LMV324MTX/NOPB, and LMR344FVJ-E2 require 2.7 V minimum. BD12734FVJ-E2 and LMR934FVJ-E2 support 1.8 V minimum. BU7487FV-E2 and BU7487SFV-E2 require 3 V minimum. MCP6474-E/ST supports 2 V minimum. Selection for low-voltage applications should prioritize parts with lower minimum supply voltage ratings.

Q: Which substitute part has the highest output current capability?

A: LMV324MT/NOPB and LMV324MTX/NOPB provide 160 mA per channel, the highest among all listed substitutes. The original LPV324PWRE4 provides 72 mA per channel. These parts are suitable for applications requiring higher output current drive capability.

Q: Can I use MCP6474-E/ST in a design originally specified for LPV324PWRE4?

A: MCP6474-E/ST is functionally compatible: 4-circuit, rail-to-rail, 14-TSSOP package, ROHS3 compliant. It provides superior performance (1.1 V/µs slew rate, 2 MHz bandwidth, 1 pA input bias current) and extended operating temperature (125°C). Supply voltage range is 2 V to 5.5 V, which encompasses the original 2.7 V to 5 V range. Pin configuration is identical. Selection is appropriate for applications where improved performance and extended temperature range are beneficial.

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