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LMV344ID Equivalent & Substitute Parts
Part Overview
The LMV344ID is a CMOS amplifier integrated circuit manufactured by Texas Instruments, featuring four independent rail-to-rail operational amplifier circuits in a 14-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The LMV344ID operates across a 2.5V to 5.5V supply range with ultra-low input bias current (1 pA) and is suitable for low-power, single-supply applications requiring minimal quiescent current consumption.
Due to Last Time Buy status, equivalent substitute parts with active production status are necessary for new designs and long-term supply chain continuity. Suitable alternatives must maintain electrical compatibility within the CMOS amplifier category while meeting the same functional requirements.
Substiute Parts
Key Parameters
| Parameter | LMV344ID 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 (Total) | 107 | µA (x4 Channels) |
| 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-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LMV344ID is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Amplifier Type: CMOS (maintains identical architecture and performance characteristics)
- Number of Circuits: 4 (quad configuration requirement)
- Output Type: Rail-to-Rail (full output swing capability)
- Package / Case: 14-SOIC with 0.154" (3.90mm) width (mechanical compatibility)
- Mounting Type: Surface Mount (assembly compatibility)
Secondary Compatibility Parameters:
- Slew Rate: 1 V/µs or greater (maintains or exceeds signal fidelity)
- Gain Bandwidth Product: 1 MHz or greater (maintains or exceeds frequency response)
- Current - Input Bias: 1 pA or lower (maintains ultra-low bias current specification)
- Voltage - Input Offset: 250 µV or lower (maintains precision)
- Voltage - Supply Span: Minimum 2.5V, Maximum 5.5V (maintains supply compatibility)
- Operating Temperature: -40°C to 125°C (maintains full industrial temperature range)
Packaging Variants: Substitutes may differ in packaging format (Tube, Cut Tape, Tape & Reel) without affecting electrical function, provided the base product number remains within the LMV344 family or equivalent CMOS quad amplifier series.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV344ID | Texas Instruments | CMOS | 4 | 1 | 1 | 1 | 250 | 2.5 | 5.5 | -40 to 125 | 14-SOIC | Last Time Buy |
| LMV344IDR | Texas Instruments | CMOS | 4 | 1 | 1 | 1 | 250 | 2.5 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV344MA/NOPB | Texas Instruments | CMOS | 4 | 1 | 1 | 0.02 | 700 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV344MAX/NOPB | Texas Instruments | CMOS | 4 | 1 | 1 | 0.02 | 700 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| AD8694ARZ-REEL7 | Analog Devices Inc. | General Purpose | 4 | 5 | 10 | 1 | 400 | 2.7 | 6 | -40 to 125 | 14-SOIC | Active |
| BU7244F-E2 | Rohm Semiconductor | CMOS | 4 | 0.4 | 0.9 | 1 | 1000 | 1.8 | 5.5 | -40 to 85 | 14-SOP | Active |
| BU7244SF-E2 | Rohm Semiconductor | CMOS | 4 | 0.4 | 0.9 | 1 | 1000 | 1.8 | 5.5 | -40 to 85 | 14-SOP | Active |
| BU7487F-E2 | Rohm Semiconductor | CMOS | 4 | 10 | 10 | 1 | 1000 | 3 | 5.5 | -40 to 105 | 14-SOP | Active |
| ISL28413FBZ | Renesas Electronics Corporation | General Purpose | 4 | 1 | 2 | 3 | 500 | 1.8 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMR934F-GE2 | Rohm Semiconductor | General Purpose | 4 | 0.35 | 1.4 | 5000 | 1000 | 1.8 | 5 | -40 to 85 | 14-SOP | Active |
| LMV324ID | Texas Instruments | General Purpose | 4 | 1 | 1 | 15000 | 1700 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Last Time Buy |
Engineering Selection Recommendations
Tier 1 - Direct Substitutes (Identical Electrical Performance):
LMV344IDR and LMV344MAX/NOPB are direct substitutes for LMV344ID. Both are manufactured by Texas Instruments with Active product status, ensuring long-term availability. These parts maintain identical electrical specifications including 1 V/µs slew rate, 1 MHz gain bandwidth product, 1 pA input bias current, and 250 µV input offset voltage. The primary difference is packaging format: LMV344IDR is supplied in Cut Tape & Digi-Reel format, while LMV344MAX/NOPB is supplied in Tape & Reel format. Both are ROHS3 compliant with MSL 1 rating.
LMV344MA/NOPB is also a Texas Instruments product with Active status but exhibits different electrical characteristics: input bias current of 0.02 pA (lower) and input offset voltage of 700 µV (higher). Minimum supply voltage is 2.7V instead of 2.5V. This part is suitable for applications where ultra-low input bias current is prioritized over input offset voltage precision.
Tier 2 - Functional Equivalents (CMOS Architecture, Different Performance Envelope):
BU7244F-E2 and BU7244SF-E2 (Rohm Semiconductor) are CMOS quad amplifiers with Active status. These parts have lower slew rate (0.4 V/µs) and gain bandwidth product (900 kHz), which may limit high-frequency performance. Operating temperature range is -40°C to 85°C, narrower than the LMV344ID specification. Package width is 4.40mm (14-SOP) versus 3.90mm (14-SOIC), requiring PCB layout verification. Supply voltage minimum is 1.8V, providing extended low-voltage capability.
BU7487F-E2 (Rohm Semiconductor) offers enhanced performance with 10 V/µs slew rate and 10 MHz gain bandwidth product, suitable for higher-speed applications. However, minimum supply voltage is 3V, restricting use in 2.5V systems. Operating temperature maximum is 105°C, below the LMV344ID specification. Package is 14-SOP (4.40mm width).
Tier 3 - Alternative Architectures (General Purpose Amplifiers):
AD8694ARZ-REEL7 (Analog Devices Inc.) is a general purpose quad amplifier with superior performance: 5 V/µs slew rate and 10 MHz gain bandwidth product. Input bias current matches the LMV344ID (1 pA). Supply voltage range extends to 6V maximum. This part is suitable for applications requiring higher bandwidth and slew rate, with trade-off of higher supply current (950 µA total versus 107 µA).
ISL28413FBZ (Renesas Electronics Corporation) is a general purpose quad amplifier with 1 V/µs slew rate and 2 MHz gain bandwidth product. Input bias current is 3 pA (higher than LMV344ID). Supply voltage minimum is 1.8V. Operating temperature range matches the LMV344ID (-40°C to 125°C). MSL rating is 2 (1 Year), requiring moisture control during storage.
LMR934F-GE2 (Rohm Semiconductor) is a general purpose quad amplifier with lower slew rate (0.35 V/µs) and gain bandwidth product (1.4 MHz). Input bias current is 5 nA, significantly higher than the LMV344ID. Operating temperature maximum is 85°C. This part is not recommended for direct substitution due to performance degradation.
LMV324ID (Texas Instruments) is a general purpose quad amplifier with Last Time Buy status. Input bias current is 15 nA and input offset voltage is 1.7 mV, both significantly higher than the LMV344ID. This part is not suitable for applications requiring ultra-low input bias current.
Compliance and Certification:
All recommended substitutes are ROHS3 compliant and carry EAR99 ECCN classification. MSL ratings are 1 (Unlimited) for all Tier 1 and most Tier 2 parts, except ISL28413FBZ (MSL 2, 1 Year). REACH status is Unaffected for all parts.
Frequently Asked Questions (FAQ)
Q1: Can LMV344IDR be used as a direct replacement for LMV344ID?
Yes. LMV344IDR is electrically identical to LMV344ID with all specifications matching exactly. The only difference is packaging format: LMV344IDR is supplied in Cut Tape & Digi-Reel format, while LMV344ID is supplied in Tube format. Both use the same 14-SOIC package with 3.90mm width. LMV344IDR has Active product status, ensuring continued availability.
Q2: What is the difference between LMV344MA/NOPB and LMV344IDR?
Both are Texas Instruments CMOS quad amplifiers in 14-SOIC packages with Active status. LMV344MA/NOPB has lower input bias current (0.02 pA versus 1 pA) but higher input offset voltage (700 µV versus 250 µV). Minimum supply voltage is 2.7V instead of 2.5V. Selection depends on whether ultra-low bias current or low offset voltage is more critical for the application.
Q3: Can AD8694ARZ-REEL7 replace LMV344ID in all applications?
AD8694ARZ-REEL7 is a general purpose amplifier with superior speed performance (5 V/µs slew rate, 10 MHz bandwidth versus 1 V/µs and 1 MHz). However, supply current is significantly higher (950 µA total versus 107 µA), making it unsuitable for ultra-low-power applications. Input bias current matches (1 pA). Substitution is application-dependent and requires verification of power budget and frequency requirements.
Q4: Why do BU7244F-E2 and BU7487F-E2 have different package widths?
Both Rohm parts use 14-SOP packaging with 4.40mm width, compared to the LMV344ID 14-SOIC with 3.90mm width. While both are 14-pin surface mount packages, the wider body requires PCB layout verification to ensure no mechanical interference. Pin pitch and spacing are compatible, but board routing and component placement must be reviewed.
Q5: Is ISL28413FBZ suitable for applications requiring -40°C to 125°C operation?
Yes. ISL28413FBZ supports the full -40°C to 125°C operating temperature range matching the LMV344ID. However, MSL rating is 2 (1 Year), requiring moisture control during storage and handling. Standard MSL 1 parts (unlimited moisture sensitivity) do not have this requirement. Verify moisture management procedures are in place before selecting this part.
Q6: What are the key electrical differences between CMOS and General Purpose amplifier types?
CMOS amplifiers (LMV344ID, BU7244F-E2, BU7487F-E2) feature ultra-low input bias current (typically 1 pA) and lower supply current, making them ideal for low-power and high-impedance applications. General Purpose amplifiers (AD8694ARZ-REEL7, ISL28413FBZ, LMR934F-GE2) typically have higher input bias current (1 pA to 5 nA) but may offer better speed performance and output drive capability. Selection depends on application requirements for input impedance, power consumption, and bandwidth.
Q7: Can parts with 14-SOP packaging be used interchangeably with 14-SOIC packaging?
No. While both are 14-pin surface mount packages, 14-SOP (4.40mm width) and 14-SOIC (3.90mm width) have different body dimensions. PCB footprints are not interchangeable without layout modification. Pin pitch and spacing are identical, but component placement and routing must be verified. Consult PCB design guidelines before substituting between these package types.
Q8: What is the significance of "Last Time Buy" status for LMV344ID?
Last Time Buy indicates the manufacturer has discontinued production and will not accept new orders after a specified date. Existing inventory is limited. For new designs or long-term supply requirements, substitution with Active status parts (LMV344IDR, LMV344MAX/NOPB) is necessary to ensure continued availability and support.
Q9: Are all substitute parts ROHS3 compliant?
Yes. All parts listed in this reference are ROHS3 compliant, meeting Restriction of Hazardous Substances Directive requirements. All carry EAR99 ECCN classification and REACH Unaffected status, suitable for commercial and industrial applications without export restrictions.
Q10: Which substitute offers the best balance of performance and power consumption?
LMV344IDR or LMV344MAX/NOPB provide identical performance to LMV344ID with Active product status and low supply current (107 µA total). For applications requiring higher speed, AD8694ARZ-REEL7 offers 5 V/µs slew rate and 10 MHz bandwidth but consumes 950 µA. For ultra-low-power applications prioritizing minimal current draw, LMV344MA/NOPB offers 0.02 pA input bias current with the same 107 µA supply current.
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