LPV324IDE4 Equivalent & Substitute Parts

Part Overview

The LPV324IDE4 is a general purpose operational amplifier manufactured by Texas Instruments, configured as a 4-circuit rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for ongoing design support and procurement.

The LPV324IDE4 features low input bias current (2 nA), minimal input offset voltage (1.5 mV), and operates across a 2.7 V to 5 V supply range with an operating temperature span of -40°C to 125°C. The obsolete status of this component requires engineers to evaluate functionally compatible alternatives that maintain electrical and mechanical compatibility within system designs.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LPV324IDE4	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
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
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5	V
Operating Temperature	-40 to 125	°C
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LPV324IDE4 is determined by strict alignment of the following critical parameters:

Primary Compatibility Criteria:

Number of Circuits: 4 (quad configuration required)
Output Type: Rail-to-Rail
Package / Case: 14-SOIC with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Voltage - Supply Span: Minimum 2.7 V, Maximum ≥ 5 V
Operating Temperature: Support for -40°C to 125°C range

Secondary Performance Parameters:

Slew Rate: 0.1 V/µs or higher
Gain Bandwidth Product: 237 kHz or higher
Current - Input Bias: 2 nA or lower
Voltage - Input Offset: 1.5 mV or lower
Current - Supply: 28 µA (x4 Channels) or lower
Current - Output / Channel: 72 mA or higher

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (LPV324 Series): Parts maintaining identical electrical performance specifications with active product status. These include LPV324M/NOPB and LPV324MX/NOPB, which preserve the low slew rate (0.1 V/µs) and low supply current characteristics of the original device.

Category B - Enhanced Performance Alternatives: Parts exceeding the electrical specifications of the LPV324IDE4 while maintaining package compatibility and supply voltage range. These include LMV324M/NOPB, LMV324MX/NOPB, and MCP6484-E/SL, which offer improved slew rate, gain bandwidth product, and output current capabilities.

Category C - Alternative Amplifier Types: Parts with different amplifier topologies (CMOS) or package variations (14-SOP) that provide functional substitution with trade-offs in electrical characteristics. These include BU7487F-E2, LMR934F-GE2, and MCP6474-E/SL.

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	Status
LPV324IDE4	Texas Instruments	General Purpose	0.1	237	2	1.5	28	72	2.7	5	-40 to 125	14-SOIC	Obsolete
LPV324M/NOPB	Texas Instruments	General Purpose	0.1	152	2	1.5	28	16	2.7	5	-40 to 85	14-SOIC	Active
LPV324MX/NOPB	Texas Instruments	General Purpose	0.1	152	2	1.5	28	16	2.7	5	-40 to 85	14-SOIC	Active
LMV324M/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	410	160	2.7	5.5	-40 to 125	14-SOIC	Active
LMV324MX/NOPB	Texas Instruments	General Purpose	1	1000	15	1.7	410	160	2.7	5.5	-40 to 125	14-SOIC	Active
MCP6484-E/SL	Microchip Technology	General Purpose	2.7	4000	1	1.5	240	12	2.2	5.5	-40 to 125	14-SOIC	Active
LMV324AM14X	onsemi	General Purpose	1.5	1400	1	1	100	34	2.7	5.5	-40 to 125	14-SOIC	Obsolete
BU7487F-E2	Rohm Semiconductor	CMOS	10	10000	0.001	1	6000	12	3	5.5	-40 to 105	14-SOP	Active
LMR934F-GE2	Rohm Semiconductor	General Purpose	0.35	1400	5	1	250	90	1.8	5	-40 to 85	14-SOP	Active
MCP6474-E/SL	Microchip Technology	CMOS	1.1	2000	0.001	1.5	100	32	2	5.5	-40 to 125	14-SOIC	Active
MCP6474T-E/SL	Microchip Technology	CMOS	1.1	2000	0.001	1.5	100	32	2	5.5	-40 to 125	14-SOIC	Active

Engineering Selection Recommendations

For Direct Replacement with Identical Electrical Performance:

LPV324M/NOPB and LPV324MX/NOPB are the primary direct substitutes for the LPV324IDE4. Both parts maintain the identical slew rate (0.1 V/µs), input bias current (2 nA), and input offset voltage (1.5 mV) specifications. These parts are manufactured by Texas Instruments and carry active product status. The primary difference is packaging format: LPV324M/NOPB is supplied in Tube packaging, while LPV324MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format.

Limitation: Both LPV324M/NOPB and LPV324MX/NOPB support an operating temperature range of -40°C to 85°C, which is narrower than the original LPV324IDE4 specification of -40°C to 125°C. Applications requiring the full 125°C upper temperature limit must select alternative parts.

For Full Temperature Range Compatibility with Enhanced Performance:

LMV324M/NOPB and LMV324MX/NOPB provide active product status with support for the full -40°C to 125°C operating temperature range. These parts offer significantly improved slew rate (1 V/µs versus 0.1 V/µs) and gain bandwidth product (1 MHz versus 237 kHz). Supply voltage range extends to 5.5 V maximum. Trade-offs include increased supply current (410 µA versus 28 µA) and higher input bias current (15 nA versus 2 nA).

For Low-Power Applications with Extended Supply Range:

MCP6484-E/SL from Microchip Technology provides active product status with the widest supply voltage range (2.2 V to 5.5 V) and full -40°C to 125°C temperature support. This part offers superior slew rate (2.7 V/µs) and gain bandwidth product (4 MHz). Input bias current is reduced to 1 pA. Supply current is 240 µA, which is higher than the original but lower than LMV324 alternatives.

For CMOS Topology with Ultra-Low Input Bias Current:

MCP6474-E/SL and MCP6474T-E/SL employ CMOS amplifier topology with input bias current of 1 pA (effectively zero bias current). These parts support -40°C to 125°C temperature range and 2 V to 5.5 V supply voltage. Slew rate is 1.1 V/µs and gain bandwidth product is 2 MHz. These parts are suitable for applications where input bias current must be minimized.

For Alternative Package Consideration:

BU7487F-E2 (Rohm Semiconductor) and LMR934F-GE2 (Rohm Semiconductor) are supplied in 14-SOP package format (0.173", 4.40mm width) rather than 14-SOIC. These parts are not pin-compatible with the original LPV324IDE4 and require PCB redesign. BU7487F-E2 offers CMOS topology with 1 pA input bias current and 10 V/µs slew rate. LMR934F-GE2 provides general purpose amplifier topology with 0.35 V/µs slew rate and extended low-voltage support (1.8 V minimum).

Compliance and Regulatory Status:

All recommended substitute parts are ROHS3 compliant, carry MSL rating of 1 (Unlimited), and are REACH unaffected. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001.

Frequently Asked Questions (FAQ)

Q1: Can LPV324M/NOPB or LPV324MX/NOPB be used as direct drop-in replacements for LPV324IDE4?

A: LPV324M/NOPB and LPV324MX/NOPB are pin-compatible and electrically equivalent to LPV324IDE4 for the majority of applications. Both parts maintain identical slew rate, input bias current, and input offset voltage. However, the operating temperature range is limited to -40°C to 85°C, compared to the original -40°C to 125°C specification. If your application operates within the -40°C to 85°C range, these parts are suitable direct replacements. If your design requires operation at temperatures above 85°C, alternative parts must be selected.

Q2: What is the difference between LPV324M/NOPB (Tube) and LPV324MX/NOPB (Cut Tape)?

A: LPV324M/NOPB and LPV324MX/NOPB are electrically identical. The difference is packaging format only. LPV324M/NOPB is supplied in Tube packaging, suitable for manual assembly or small-volume production. LPV324MX/NOPB is supplied in Cut Tape (CT) & Digi-Reel® format, optimized for automated pick-and-place assembly and high-volume manufacturing. Select based on your assembly process requirements.

Q3: Why do LMV324M/NOPB and LMV324MX/NOPB have higher supply current than the original LPV324IDE4?

A: LMV324M/NOPB and LMV324MX/NOPB are enhanced performance variants of the LMV324 family. The increased supply current (410 µA versus 28 µA) is a direct result of higher slew rate (1 V/µs versus 0.1 V/µs) and higher gain bandwidth product (1 MHz versus 237 kHz). These performance improvements require additional quiescent current. If power consumption is critical, evaluate MCP6484-E/SL or MCP6474-E/SL as alternatives.

Q4: Is MCP6484-E/SL suitable for applications requiring the lowest possible input bias current?

A: MCP6484-E/SL has input bias current of 1 pA, which is significantly lower than the original LPV324IDE4 (2 nA). However, MCP6474-E/SL and MCP6474T-E/SL offer even lower input bias current (1 pA for CMOS topology, effectively zero). If ultra-low input bias current is the primary requirement, MCP6474 variants are preferred. If general purpose performance with low bias current is acceptable, MCP6484-E/SL is suitable.

Q5: Can BU7487F-E2 or LMR934F-GE2 be used as replacements without PCB modification?

A: No. BU7487F-E2 and LMR934F-GE2 are supplied in 14-SOP package format (0.173", 4.40mm width), while the original LPV324IDE4 uses 14-SOIC package (0.154", 3.90mm width). Although both are 14-pin packages, the pin pitch and body dimensions differ, making them incompatible with existing PCB layouts. PCB redesign is required to accommodate these parts.

Q6: What is the minimum supply voltage for each substitute part?

A: LPV324IDE4 and LPV324M/NOPB require minimum 2.7 V. LMV324M/NOPB, LMV324MX/NOPB, and MCP6474 variants require minimum 2.7 V. MCP6484-E/SL supports the lowest minimum supply voltage at 2.2 V. LMR934F-GE2 supports extended low-voltage operation at 1.8 V minimum. BU7487F-E2 requires minimum 3 V. Select based on your system's minimum supply voltage requirement.

Q7: Which substitute part offers the highest slew rate?

A: BU7487F-E2 offers the highest slew rate at 10 V/µs. MCP6484-E/SL provides 2.7 V/µs. LMV324M/NOPB and LMV324MX/NOPB provide 1 V/µs. LMR934F-GE2 provides 0.35 V/µs. LPV324M/NOPB and LPV324MX/NOPB maintain the original 0.1 V/µs slew rate. Select based on your application's bandwidth and settling time requirements.

Q8: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant with MSL rating of 1 (Unlimited). All parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.33.0001, matching the regulatory status of the original LPV324IDE4.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message