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LMV344IPW Equivalent & Substitute Parts
Part Overview
The LMV344IPW is a CMOS operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-TSSOP surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The LMV344IPW delivers rail-to-rail output capability with low input bias current and is suitable for low-power, general-purpose amplification applications across industrial and consumer electronics.
Substitute parts are necessary due to the Last Time Buy status of the LMV344IPW. Alternative models provide equivalent or enhanced functionality while maintaining active production status and assured long-term availability.
Substiute Parts
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 | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV344IPW are grouped based on the following critical parameters that determine functional equivalence:
Primary Substitution Criteria:
- Amplifier Type: CMOS
- Number of Circuits: 4
- Output Type: Rail-to-Rail
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
Secondary Compatibility Parameters:
- Slew Rate: 1 V/µs (minimum acceptable)
- Gain Bandwidth Product: 1 MHz (minimum acceptable)
- Current - Input Bias: 1 pA (maximum acceptable)
- Voltage - Input Offset: 250 µV (maximum acceptable)
- Voltage - Supply Span: 2.5 V to 5.5 V (required range overlap)
- Operating Temperature: -40°C to 125°C (required range overlap)
Parts are classified into two categories:
Category A - Direct Equivalents (Texas Instruments LMV344 Series): These parts share identical electrical specifications with the LMV344IPW and differ only in packaging format or product status. They maintain the same base product number (LMV344) and are suitable for direct substitution in all applications.
Category B - Functional Alternatives (Cross-Manufacturer): These parts meet or exceed the primary substitution criteria and maintain compatibility within the secondary parameters. They originate from Rohm Semiconductor or Microchip Technology and provide equivalent or enhanced performance characteristics.
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 Span Min (V) | Supply Span Max (V) | Temp Range (°C) | Package | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV344IPW | Texas Instruments | CMOS | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-TSSOP | Last Time Buy |
| LMV344IPWR | Texas Instruments | CMOS | 1 | 1 | 1 | 250 | 107 | 113 | 2.5 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| LMV344MT/NOPB | Texas Instruments | CMOS | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| LMV344MTX/NOPB | Texas Instruments | CMOS | 1 | 1 | 0.02 | 700 | 107 | 113 | 2.7 | 5.5 | -40 to 125 | 14-TSSOP | Active |
| BD12734FVJ-E2 | Rohm Semiconductor | General Purpose | 0.4 | 1 | 50 | 1000 | 1200 | 12 | 1.8 | 5 | -40 to 85 | 14-TSSOP | Active |
| BU7487FV-E2 | Rohm Semiconductor | CMOS | 10 | 10 | 1 | 1000 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-LSSOP | Active |
| BU7487SFV-E2 | Rohm Semiconductor | CMOS | 10 | 10 | 1 | 1000 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-LSSOP | Active |
| LMR344FVJ-E2 | Rohm Semiconductor | CMOS | 1 | 2 | 1 | 250 | 400 | 113 | 2.7 | 5.5 | -40 to 85 | 14-TSSOP | Active |
| LMR934FVJ-E2 | Rohm Semiconductor | General Purpose | 0.35 | 1.4 | 5 | 1000 | 250 | 90 | 1.8 | 5 | -40 to 85 | 14-TSSOP | Active |
| MCP6004T-I/ST | Microchip Technology | General Purpose | 0.6 | 1 | 1 | 4500 | 100 | 23 | 1.8 | 6 | -40 to 85 | 14-TSSOP | Active |
| MCP609-I/ST | Microchip Technology | CMOS | 0.08 | 0.155 | 1 | 250 | 18.7 | 17 | 2.5 | 6 | -40 to 85 | 14-TSSOP | Active |
Engineering Selection Recommendations
Tier 1 - Recommended Direct Substitutes (Texas Instruments LMV344 Series):
The LMV344IPWR is the primary recommended substitute. This part maintains identical electrical specifications to the LMV344IPW while offering Active product status and significantly higher inventory availability (29,278 units). The only difference is packaging format (Cut Tape & Digi-Reel versus Tube), which does not affect electrical performance. This substitution requires no circuit redesign.
The LMV344MT/NOPB and LMV344MTX/NOPB are secondary alternatives within the LMV344 family. Both maintain Active status and identical core functionality. The LMV344MT/NOPB is supplied in Tube packaging (917 units available), while the LMV344MTX/NOPB is supplied in Tape & Reel format (7,200 units available). These variants exhibit improved input bias current (0.02 pA versus 1 pA) and higher input offset voltage (700 µV versus 250 µV), with minimum supply voltage increased to 2.7 V.
Tier 2 - Cross-Manufacturer CMOS Alternatives:
The LMR344FVJ-E2 (Rohm Semiconductor) provides CMOS amplification with identical slew rate and input offset voltage specifications. This part maintains the 14-TSSOP package and supports the full -40°C to 125°C temperature range of the original device. The gain bandwidth product is enhanced to 2 MHz, and supply current is increased to 400 µA. Operating temperature range is limited to -40°C to 85°C.
The BU7487FV-E2 and BU7487SFV-E2 (Rohm Semiconductor) offer enhanced performance with 10 V/µs slew rate and 10 MHz gain bandwidth product. These CMOS devices maintain 1 pA input bias current but use a 14-LSSOP package variant. Supply current is significantly higher at 6 mA, and minimum supply voltage is 3 V. These parts are suitable for applications requiring faster response characteristics.
Tier 3 - General Purpose Alternatives:
The MCP6004T-I/ST (Microchip Technology) is a general-purpose amplifier with 1 MHz gain bandwidth product and 1 pA input bias current. This part supports extended supply voltage range (1.8 V to 6 V) and maintains the 14-TSSOP package. Input offset voltage is higher at 4.5 mV, and output current per channel is reduced to 23 mA.
The LMR934FVJ-E2 (Rohm Semiconductor) is a general-purpose alternative with 1.4 MHz gain bandwidth product and extended supply range (1.8 V to 5 V). Input bias current is 5 nA, and input offset voltage is 1 mV. Operating temperature range is limited to -40°C to 85°C.
The MCP609-I/ST (Microchip Technology) is a low-power CMOS option with ultra-low supply current (18.7 µA). However, this part exhibits significantly reduced slew rate (0.08 V/µs) and gain bandwidth product (155 kHz), making it unsuitable for applications requiring the performance characteristics of the LMV344IPW.
Compliance and Certification:
All recommended substitutes maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, matching the regulatory profile of the LMV344IPW.
Frequently Asked Questions (FAQ)
Q1: Can the LMV344IPWR be used as a direct replacement for the LMV344IPW?
A: Yes. The LMV344IPWR is electrically identical to the LMV344IPW. The only difference is packaging format: LMV344IPWR is supplied in Cut Tape & Digi-Reel format, while LMV344IPW is supplied in Tube format. Both parts share identical electrical specifications, pin configuration, and performance characteristics. No circuit modifications are required.
Q2: What is the difference between LMV344MT/NOPB and LMV344IPWR?
A: Both are Active-status variants of the LMV344 base product. The LMV344MT/NOPB exhibits improved input bias current (0.02 pA versus 1 pA) but higher input offset voltage (700 µV versus 250 µV). Minimum supply voltage is increased to 2.7 V. The LMV344IPWR maintains the original specifications of the LMV344IPW. Selection depends on whether lower input bias current or lower input offset voltage is prioritized in the application.
Q3: Are the Rohm Semiconductor alternatives suitable for all LMV344IPW applications?
A: Rohm alternatives require evaluation against specific application requirements. The LMR344FVJ-E2 maintains closest electrical equivalence with identical slew rate and input offset voltage. However, operating temperature range is limited to -40°C to 85°C, which may not be acceptable for applications requiring the full -40°C to 125°C range of the LMV344IPW. The BU7487 series offers enhanced performance but with different electrical characteristics (higher slew rate, higher supply current, higher minimum supply voltage).
Q4: Why is the MCP609-I/ST not recommended as a substitute?
A: The MCP609-I/ST exhibits significantly degraded performance compared to the LMV344IPW. Slew rate is reduced to 0.08 V/µs (versus 1 V/µs), and gain bandwidth product is reduced to 155 kHz (versus 1 MHz). These reductions make this part unsuitable for applications designed around the LMV344IPW performance envelope. This part is appropriate only for ultra-low-power applications where reduced bandwidth is acceptable.
Q5: What packaging considerations apply to substitute selection?
A: The LMV344IPW, LMV344IPWR, LMV344MT/NOPB, and LMV344MTX/NOPB all use the 14-TSSOP package with identical pin configuration and footprint. The BU7487 series uses 14-LSSOP packaging, which has the same pin count and similar footprint but may require PCB layout verification. All other substitutes maintain 14-TSSOP compatibility. Packaging format (Tube, Cut Tape, Tape & Reel) affects supply and handling but not electrical performance or PCB compatibility.
Q6: Which substitute offers the best inventory availability?
A: The LMV344IPWR offers the highest inventory availability at 29,278 units. This part is recommended for applications where supply chain continuity is critical. The MCP6004T-I/ST (Microchip Technology) also offers substantial inventory at 18,800 units and provides extended supply voltage range as an additional benefit.
Q7: Are all substitutes RoHS3 compliant?
A: Yes. All recommended substitutes maintain ROHS3 compliance, matching the regulatory status of the LMV344IPW. Moisture Sensitivity Level is 1 (Unlimited) for all parts, and REACH status is Unaffected across all alternatives.
Q8: What is the impact of higher supply current in alternative parts?
A: The LMV344IPW operates at 107 µA total supply current (x4 channels). The LMR344FVJ-E2 increases this to 400 µA, while the BU7487 series increases it to 6 mA. Higher supply current increases power dissipation and may require larger power supply capacity or thermal management considerations. For battery-powered or power-constrained applications, the LMV344IPWR or MCP609-I/ST (18.7 µA) should be prioritized.
Q9: Can substitutes with different temperature ranges be used in -40°C to 125°C applications?
A: No. Applications requiring the full -40°C to 125°C operating range must use parts that explicitly support this range. The LMV344IPWR, LMV344MT/NOPB, and LMV344MTX/NOPB all support -40°C to 125°C. Rohm alternatives (LMR344FVJ-E2, BU7487 series, LMR934FVJ-E2) and Microchip alternatives (MCP6004T-I/ST, MCP609-I/ST) are limited to -40°C to 85°C and are unsuitable for extended high-temperature applications.
Q10: What is the significance of input offset voltage differences among substitutes?
A: Input offset voltage determines DC accuracy in precision applications. The LMV344IPW specifies 250 µV maximum. The LMV344MT/NOPB increases this to 700 µV, while general-purpose alternatives (MCP6004T-I/ST at 4.5 mV, LMR934FVJ-E2 at 1 mV) exhibit higher offset. For applications requiring tight DC accuracy, the LMV344IPWR or LMR344FVJ-E2 should be selected. For applications with offset compensation or AC coupling, higher offset voltage is acceptable.
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