LMV344IPWR Equivalent & Substitute Parts

Part Overview

The LMV344IPWR is a CMOS rail-to-rail operational amplifier manufactured by Texas Instruments, configured as a 4-circuit integrated circuit in a 14-TSSOP surface mount package. This device operates across a 2.5V to 5.5V supply voltage range with an operating temperature range of -40°C to 125°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for the application.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	1	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	250	µV
Current - Supply (x4 Channels)	107	µA
Current - Output / Channel	113	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the LMV344IPWR are selected based on the following critical parameters that define functional equivalence:

Primary Substitution Criteria:

Number of Circuits: 4 (quad configuration required)
Output Type: Rail-to-Rail (mandatory for voltage swing capability)
Package / Case: 14-TSSOP surface mount (mechanical and thermal compatibility)
Mounting Type: Surface Mount (PCB assembly compatibility)
Voltage - Supply Span: Minimum 2.5V to Maximum 5.5V (operating range overlap)
Operating Temperature: -40°C to 125°C (temperature range coverage)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Secondary Performance Parameters:

Slew Rate: 1 V/µs (signal fidelity and bandwidth)
Gain Bandwidth Product: 1 MHz (frequency response)
Current - Input Bias: 1 pA (input impedance characteristics)
Voltage - Input Offset: 250 µV (DC accuracy)
Current - Supply: 107 µA (x4 Channels) (power consumption)
Current - Output / Channel: 113 mA (load driving capability)

Substitute parts are grouped into two categories: direct Texas Instruments variants and cross-manufacturer alternatives from Rohm Semiconductor and Microchip Technology. All substitutes maintain the 14-TSSOP package format and rail-to-rail output configuration. Variations in secondary parameters indicate performance trade-offs suitable for specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
LMV344IPWR	Texas Instruments	CMOS	1	1	1	250	107	113	2.5	5.5	-40 to 125	14-TSSOP
LMV344MTX/NOPB	Texas Instruments	CMOS	1	1	0.02	700	107	113	2.7	5.5	-40 to 125	14-TSSOP
BD12734FVJ-E2	Rohm Semiconductor	General Purpose	0.4	1	50	1000	1200	12	1.8	5	-40 to 85	14-TSSOP
BU7487FV-E2	Rohm Semiconductor	CMOS	10	10	1	1000	6000	12	3	5.5	-40 to 105	14-LSSOP
LMR934FVJ-E2	Rohm Semiconductor	General Purpose	0.35	1.4	5	1000	250	90	1.8	5	-40 to 85	14-TSSOP
LMV324DTBR2G	onsemi	Voltage Feedback	1	1	1	1700	100	160	2.7	5.5	-40 to 85	14-TSSOP
MCP609-I/ST	Microchip Technology	CMOS	0.08	0.155	1	250	18.7	17	2.5	6	-40 to 85	14-TSSOP
MCP6404T-E/ST	Microchip Technology	General Purpose	0.5	1	1	800	45	15	1.8	6	-40 to 125	14-TSSOP
MCP6424-E/ST	Microchip Technology	General Purpose	0.05	0.09	1	1000	4.4	22	1.8	5.5	-40 to 125	14-TSSOP
MCP6424T-E/ST	Microchip Technology	General Purpose	0.05	0.09	1	1000	4.4	22	1.8	5.5	-40 to 125	14-TSSOP
MCP6474-E/ST	Microchip Technology	CMOS	1.1	2	1	1500	100	32	2	5.5	-40 to 125	14-TSSOP

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Highest Compatibility):

LMV344MTX/NOPB (Texas Instruments) represents the manufacturer-recommended direct substitute, differing only in packaging format (Tape & Reel versus Cut Tape) and minor parameter variations in input bias current and input offset voltage. This part maintains identical electrical performance specifications and temperature range coverage. Selection is appropriate when packaging format compatibility with automated assembly processes is the primary consideration.

Cross-Manufacturer Substitutes with Full Parameter Coverage:

MCP6404T-E/ST (Microchip Technology) and MCP6474-E/ST (Microchip Technology) provide extended operating temperature range to 125°C, matching the LMV344IPWR specification. Both maintain 14-TSSOP packaging, rail-to-rail output, and quad configuration. MCP6474-E/ST offers enhanced slew rate (1.1 V/µs) and gain bandwidth product (2 MHz), suitable for applications requiring improved signal fidelity. MCP6404T-E/ST provides lower supply voltage minimum (1.8V) for battery-powered applications.

Cross-Manufacturer Substitutes with Reduced Temperature Range:

BD12734FVJ-E2, LMR934FVJ-E2, and LMV324DTBR2G (Rohm Semiconductor and onsemi) operate to 85°C maximum, below the LMV344IPWR specification of 125°C. These parts are suitable only for applications with maximum operating temperature not exceeding 85°C. All maintain 14-TSSOP packaging and rail-to-rail output configuration.

Specialized Performance Trade-offs:

MCP609-I/ST (Microchip Technology) provides ultra-low supply current (18.7 µA) at the cost of reduced slew rate (0.08 V/µs) and gain bandwidth product (155 kHz). Selection is appropriate for ultra-low-power applications where bandwidth requirements are limited.

Compliance and Regulatory Status:

All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the LMV344IPWR. Moisture sensitivity level remains at MSL 1 (Unlimited) for all substitutes except LMV324DTBR2G (MSL 3, 168 Hours), which requires controlled storage conditions.

Frequently Asked Questions (FAQ)

Q: Can LMV344MTX/NOPB be used as a direct replacement for LMV344IPWR?

A: Yes. Both parts are manufactured by Texas Instruments with identical base product number (LMV344) and electrical specifications. The primary difference is packaging format: LMV344IPWR is supplied in Cut Tape (CT) & Digi-Reel format, while LMV344MTX/NOPB is supplied in Tape & Reel (TR) format. Electrical performance and pin configuration are equivalent. Verify packaging compatibility with your assembly process before substitution.

Q: What is the key difference between CMOS and General Purpose amplifier types in the substitute list?

A: CMOS amplifiers (LMV344IPWR, BU7487FV-E2, MCP609-I/ST, MCP6474-E/ST) utilize CMOS input stage technology, resulting in extremely low input bias current (typically 1 pA). General Purpose amplifiers (BD12734FVJ-E2, LMR934FVJ-E2, MCP6404T-E/ST, MCP6424-E/ST) employ different input stage architectures with higher input bias currents (5 nA to 50 nA). Selection depends on application sensitivity to input bias current effects.

Q: Can I substitute MCP6424T-E/ST for LMV344IPWR in a high-speed application?

A: No. MCP6424T-E/ST has a gain bandwidth product of 90 kHz and slew rate of 0.05 V/µs, significantly lower than the LMV344IPWR specification of 1 MHz and 1 V/µs. This substitute is suitable only for low-frequency, low-speed applications. For high-speed requirements, select MCP6474-E/ST (2 MHz GBW, 1.1 V/µs slew rate) or BU7487FV-E2 (10 MHz GBW, 10 V/µs slew rate).

Q: What is the impact of supply voltage range differences on substitution?

A: The LMV344IPWR operates from 2.5V to 5.5V. Substitutes with lower minimum supply voltage (1.8V) such as MCP6404T-E/ST, MCP6424-E/ST, and BD12734FVJ-E2 are compatible with the LMV344IPWR application if your circuit operates within the 2.5V to 5.5V range. However, substitutes with higher minimum supply voltage (3V for BU7487FV-E2) cannot be used in applications requiring operation below 3V. Verify your circuit's actual supply voltage requirements before selection.

Q: Why do some substitutes have reduced operating temperature range?

A: BD12734FVJ-E2, LMR934FVJ-E2, and LMV324DTBR2G are specified to 85°C maximum, compared to the LMV344IPWR specification of 125°C. These parts are suitable only for applications where the maximum operating temperature does not exceed 85°C. If your application requires operation up to 125°C, select LMV344MTX/NOPB, MCP6404T-E/ST, MCP6424-E/ST, or MCP6474-E/ST.

Q: Is the 14-LSSOP package of BU7487FV-E2 compatible with 14-TSSOP PCB layouts?

A: No. Although both packages are 14-pin surface mount packages with similar pitch, 14-LSSOP and 14-TSSOP have different physical dimensions and pin configurations. BU7487FV-E2 in 14-LSSOP package cannot be directly substituted into a PCB designed for 14-TSSOP without layout modification. Verify package compatibility with your PCB design before selection.

Q: What does MSL 3 (168 Hours) mean for LMV324DTBR2G?

A: Moisture Sensitivity Level 3 indicates that the component must be stored in a controlled humidity environment and has a floor life of 168 hours (7 days) after exposure to ambient conditions. The LMV344IPWR has MSL 1 (Unlimited), meaning no moisture sensitivity restrictions. If your supply chain or storage conditions cannot accommodate MSL 3 requirements, select an MSL 1 substitute such as LMV344MTX/NOPB or MCP6474-E/ST.

Q: Can I use MCP609-I/ST for audio frequency applications?

A: MCP609-I/ST has a gain bandwidth product of 155 kHz, which is below typical audio bandwidth requirements (20 Hz to 20 kHz with headroom). While technically capable of audio frequencies, the limited bandwidth may restrict circuit design flexibility. For audio applications, select MCP6404T-E/ST (1 MHz GBW), MCP6474-E/ST (2 MHz GBW), or BU7487FV-E2 (10 MHz GBW) to ensure adequate bandwidth margin.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the regulatory requirement of the LMV344IPWR. REACH status is unaffected for all parts. No additional regulatory verification is required for substitution from a compliance perspective.

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