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LMV344MT CMOS Amplifier Equivalent & Substitute Parts
Part Overview
The LMV344MT is a CMOS operational amplifier IC manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-TSSOP surface mount package. This device is classified as Obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and production continuity. The LMV344MT operates across a 2.7V to 5.5V supply range with rail-to-rail output capability, making it suitable for low-power analog signal processing applications. Due to its obsolete status, direct replacements and functionally equivalent alternatives are required for new designs and legacy system maintenance.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | LMV344MT | — |
| Manufacturer | Texas Instruments | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | CMOS | — |
| Number of Circuits | 4 | — |
| Output Type | Rail-to-Rail | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Slew Rate | 1 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 0.02 | pA |
| Voltage - Input Offset | 700 | µV |
| Current - Supply (x4 Channels) | 107 | µA |
| Current - Output / Channel | 113 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 125 | °C |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
| RoHS Status | RoHS non-compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LMV344MT is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Amplifier Type: CMOS
- Number of Circuits: 4
- Output Type: Rail-to-Rail
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Operating Temperature Range: Minimum -40°C, Maximum ≥125°C
- Voltage Supply Span: Minimum ≤2.7V, Maximum ≥5.5V
- Slew Rate: ≥1V/µs
- Gain Bandwidth Product: ≥1 MHz
Secondary Compatibility Parameters:
- Current - Input Bias: ≤0.02 pA (preferred) or ≤1 pA (acceptable)
- Voltage - Input Offset: ≤700 µV (preferred) or ≤1 mV (acceptable)
- Current - Supply: ≤107 µA per channel (preferred) or ≤6 mA (acceptable for lower-power applications)
- Current - Output / Channel: ≥113 mA
Substitute parts are grouped into three categories based on their relationship to the LMV344MT:
Category 1: Direct Equivalents (Same Base Product, Different Packaging/Compliance) Parts sharing the LMV344 base product number with identical electrical specifications but different packaging or RoHS compliance status.
Category 2: Functional Equivalents (Texas Instruments LMV Series) Parts from the Texas Instruments LMV product line with compatible electrical parameters and 14-TSSOP packaging, offering improved compliance or performance characteristics.
Category 3: Cross-Manufacturer Alternatives (Analog Devices, Rohm Semiconductor) Parts from alternative manufacturers meeting all primary substitution criteria with 14-TSSOP or compatible packaging, offering active product status and full RoHS compliance.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Circuits | 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 | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV344MT | Texas Instruments | Obsolete | CMOS | 4 | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | Non-compliant |
| LMV344MT/NOPB | Texas Instruments | Active | CMOS | 4 | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| LMV344IPW | Texas Instruments | Last Time Buy | CMOS | 4 | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| LMV344IPWR | Texas Instruments | Active | CMOS | 4 | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| ADA4891-4ARUZ | Analog Devices Inc. | Active | CMOS | 4 | 210 | 105 | 2 | 2500 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| ADA4891-4ARUZ-R7 | Analog Devices Inc. | Active | CMOS | 4 | 210 | 105 | 2 | 2500 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| ADA4891-4ARUZ-RL | Analog Devices Inc. | Active | CMOS | 4 | 210 | 105 | 2 | 2500 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | RoHS3 Compliant |
| BD12734FVJ-E2 | Rohm Semiconductor | Active | General Purpose | 4 | 0.4 | 1 | 50 | 1000 | 1200 | 12 | 1.8 | 5 | -40 to 85 | 14-TSSOP | RoHS3 Compliant |
| BU7487FV-E2 | Rohm Semiconductor | Active | CMOS | 4 | 10 | 10 | 1 | 1000 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-LSSOP | RoHS3 Compliant |
| BU7487SFV-E2 | Rohm Semiconductor | Active | CMOS | 4 | 10 | 10 | 1 | 1000 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-LSSOP | RoHS3 Compliant |
| LMR344FVJ-E2 | Rohm Semiconductor | Active | CMOS | 4 | 1 | 2 | 1 | 250 | 400 | 113 | 2.7 | 5.5 | -40 to 85 | 14-TSSOP | RoHS3 Compliant |
Engineering Selection Recommendations
Tier 1: Direct Replacement (Recommended for Immediate Substitution)
LMV344MT/NOPB is the primary direct replacement. This part maintains identical electrical specifications to the original LMV344MT while offering Active product status and RoHS3 compliance. The only difference is packaging designation (Tube vs. unspecified), which does not affect electrical performance or PCB footprint compatibility.
LMV344IPWR is the recommended long-term substitute. This part is Active, RoHS3 compliant, and available in high inventory (29,278 pcs). It features improved input offset voltage (250 µV vs. 700 µV) and lower minimum supply voltage (2.5V vs. 2.7V), providing enhanced performance margins. The part is supplied in Cut Tape and Digi-Reel packaging suitable for production environments.
Tier 2: Functional Equivalents with Enhanced Performance
LMV344IPW offers Last Time Buy status with improved specifications (250 µV input offset, 2.5V minimum supply) but limited inventory (2,620 pcs). This part is suitable for designs requiring better offset voltage performance.
ADA4891-4ARUZ and ADA4891-4ARUZ-R7 (Analog Devices) provide significantly enhanced performance with 105 MHz gain-bandwidth product and 210 V/µs slew rate, compared to 1 MHz and 1 V/µs for the LMV344MT. These parts are Active, RoHS3 compliant, and suitable for applications requiring higher bandwidth. Higher supply current (4.4 mA vs. 107 µA) must be considered in power-constrained designs.
Tier 3: Alternative Manufacturers with Operational Compatibility
BU7487SFV-E2 (Rohm Semiconductor) is Active and RoHS3 compliant with 10 MHz gain-bandwidth product and 10 V/µs slew rate. This part requires minimum 3V supply (vs. 2.7V) and operates to 105°C (vs. 125°C). Output current is limited to 12 mA per channel (vs. 113 mA).
LMR344FVJ-E2 (Rohm Semiconductor) maintains 1 V/µs slew rate with 2 MHz gain-bandwidth product. It is Active and RoHS3 compliant but operates only to 85°C and has higher supply current (400 µA vs. 107 µA).
BD12734FVJ-E2 (Rohm Semiconductor) is a General Purpose amplifier with 1 MHz gain-bandwidth product but operates only to 85°C and requires minimum 1.8V supply. Output current is limited to 12 mA per channel.
Compliance and Certification Basis:
All recommended substitutes are RoHS3 compliant, addressing environmental regulatory requirements. The LMV344MT is RoHS non-compliant and should be phased out in new designs. All substitute parts maintain REACH Unaffected and EAR99 ECCN status, consistent with the original part.
Frequently Asked Questions (FAQ)
Q1: Can LMV344IPWR be used as a direct drop-in replacement for LMV344MT?
A: Yes. LMV344IPWR is electrically compatible with LMV344MT and uses the same 14-TSSOP package footprint. The part is pin-compatible and requires no circuit modifications. LMV344IPWR offers improved specifications (lower input offset voltage and lower minimum supply voltage) and is Active with RoHS3 compliance.
Q2: What is the difference between LMV344MT/NOPB and LMV344IPWR?
A: LMV344MT/NOPB maintains identical electrical specifications to the original LMV344MT (700 µV input offset, 2.7V minimum supply) and is supplied in Tube packaging. LMV344IPWR has improved specifications (250 µV input offset, 2.5V minimum supply) and is supplied in Cut Tape and Digi-Reel packaging. Both are Active and RoHS3 compliant. LMV344IPWR is recommended for new designs due to higher inventory availability and improved performance.
Q3: Can ADA4891-4ARUZ replace LMV344MT in all applications?
A: ADA4891-4ARUZ is electrically compatible in terms of package, pin count, and supply voltage range. However, it has significantly higher performance specifications (105 MHz vs. 1 MHz gain-bandwidth product, 210 V/µs vs. 1 V/µs slew rate) and higher supply current (4.4 mA vs. 107 µA per channel). This part is suitable for applications requiring higher bandwidth but may introduce unnecessary cost and power consumption in low-frequency applications. Verify that the application circuit can accommodate the higher performance characteristics.
Q4: What are the package compatibility considerations for BU7487SFV-E2?
A: BU7487SFV-E2 uses 14-LSSOP packaging (0.173", 4.40mm Width), which is mechanically compatible with 14-TSSOP footprints. However, the part has reduced output current (12 mA vs. 113 mA per channel), higher minimum supply voltage (3V vs. 2.7V), and lower maximum operating temperature (105°C vs. 125°C). These limitations may restrict its use in applications requiring high output current or extended temperature operation.
Q5: Why is LMV344MT classified as Obsolete?
A: The LMV344MT is classified as Obsolete due to its RoHS non-compliant status and the availability of superior alternatives with RoHS3 compliance and improved electrical characteristics. Texas Instruments has transitioned to active production of LMV344IPWR and LMV344MT/NOPB, which offer the same functionality with modern compliance standards.
Q6: Are all substitute parts available in the same packaging options?
A: No. The original LMV344MT packaging is unspecified. LMV344MT/NOPB is supplied in Tube packaging. LMV344IPWR is supplied in Cut Tape and Digi-Reel. ADA4891-4ARUZ variants are supplied in Tube, Cut Tape/Digi-Reel, and Tape & Reel options. Rohm parts (BU7487SFV-E2, LMR344FVJ-E2, BD12734FVJ-E2) are supplied in Cut Tape and Digi-Reel. Verify packaging requirements for your production process before selection.
Q7: What is the minimum supply voltage requirement for each substitute?
A: LMV344MT and LMV344MT/NOPB require 2.7V minimum. LMV344IPW and LMV344IPWR require 2.5V minimum. ADA4891 variants require 2.7V minimum. BU7487 variants require 3V minimum. BD12734FVJ-E2 requires 1.8V minimum. Verify that your power supply design meets the minimum voltage requirement of the selected substitute.
Q8: Which substitute offers the best inventory availability?
A: LMV344IPWR has the highest inventory (29,278 pcs), followed by ADA4891-4ARUZ-R7 (3,494 pcs) and LMV344MT (3,265 pcs). For immediate availability, LMV344IPWR is the optimal choice.
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