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LMV321IDBVRQ1 Equivalent & Substitute Parts
Part Overview
The LMV321IDBVRQ1 is a general-purpose operational amplifier manufactured by Texas Instruments, packaged in SOT-23-5 (SC-74A) surface mount configuration. This device features rail-to-rail output capability and is qualified to AEC-Q100 automotive standards. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across key performance parameters including supply voltage range, input bias current, slew rate, and gain bandwidth product while accommodating different packaging options and product status classifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 1 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 15 | nA |
| Voltage - Input Offset | 1.7 | mV |
| Current - Supply | 130 | µA |
| Current - Output / Channel | 160 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5.5 | V |
| Operating Temperature | -40 to 85 | °C |
| Grade | Automotive | — |
| Qualification | AEC-Q100 | — |
| Mounting Type | Surface Mount | — |
| Package / Case | SC-74A, SOT-753 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV321IDBVRQ1 are classified into three functional categories based on electrical parameter compatibility and packaging configuration:
Category 1: Direct SOT-23-5 Package Equivalents (Identical Electrical Performance) Parts LMV321M5/NOPB, LMV321M5X/NOPB, and LMV321Q3M5/NOPB maintain identical electrical specifications to the main part: 1 V/µs slew rate, 1 MHz gain bandwidth product, 15 nA input bias current, 1.7 mV input offset voltage, 130 µA supply current, and 160 mA output current per channel. All operate across the 2.7 V to 5.5 V supply range and -40°C to 85°C temperature span. These parts differ only in packaging format (Cut Tape, Digi-Reel, or Tape & Reel) and product status (Active vs. Obsolete). LMV321Q3M5/NOPB retains automotive AEC-Q100 qualification matching the original part.
Category 2: SC-70-5 Package Variants (Identical Electrical Performance, Different Package) Parts LMV321M7/NOPB and LMV321M7X/NOPB provide identical electrical performance in SC-70-5 (5-TSSOP, SOT-353) surface mount packaging. Electrical parameters remain unchanged: 1 V/µs slew rate, 1 MHz gain bandwidth product, 15 nA input bias current, 1.7 mV input offset voltage, 130 µA supply current, and 160 mA output current per channel. Supply voltage and temperature ranges are identical. These parts are suitable for designs where SC-70-5 footprint compatibility is required.
Category 3: Low-Power Alternatives (Modified Electrical Performance) Parts LPV321M5/NOPB, LPV321M5X/NOPB, LPV321M7/NOPB, and LPV321M7X/NOPB represent the LPV321 series with reduced power consumption characteristics. These parts operate at 0.1 V/µs slew rate (versus 1 V/µs), 152 kHz gain bandwidth product (versus 1 MHz), 2 nA input bias current (versus 15 nA), 1.5 mV input offset voltage (versus 1.7 mV), and 9 µA supply current (versus 130 µA). Maximum supply voltage is 5 V (versus 5.5 V). These substitutes are applicable only when reduced bandwidth and lower power consumption are acceptable trade-offs.
Category 4: Cross-Manufacturer Alternative (Rohm Semiconductor) Part BU7241G-TR from Rohm Semiconductor provides general-purpose amplification in 5-SSOP packaging with modified electrical characteristics: 0.4 V/µs slew rate, 900 kHz gain bandwidth product, 1 pA input bias current, 1 mV input offset voltage, 70 µA supply current, and 12 mA output current per channel. Supply range extends to 1.8 V minimum. This part is suitable for applications where lower input bias current and reduced supply current are beneficial, provided bandwidth and output current requirements are compatible.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Package | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | AEC-Q100 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV321IDBVRQ1 | Texas Instruments | Obsolete | SOT-23-5 | 1 | 1 | 15 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | Yes |
| LMV321M5/NOPB | Texas Instruments | Active | SOT-23-5 | 1 | 1 | 15 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | No |
| LMV321M5X/NOPB | Texas Instruments | Active | SOT-23-5 | 1 | 1 | 15 | 1.7 | 130 | — | 2.7 | 5.5 | -40 to 85 | No |
| LMV321Q3M5/NOPB | Texas Instruments | Active | SOT-23-5 | 1 | 1 | 15 | 1.7 | 130 | — | 2.7 | 5.5 | -40 to 85 | Yes |
| LMV321M7/NOPB | Texas Instruments | Active | SC-70-5 | 1 | 1 | 15 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | No |
| LMV321M7X/NOPB | Texas Instruments | Active | SC-70-5 | 1 | 1 | 15 | 1.7 | 130 | — | 2.7 | 5.5 | -40 to 85 | No |
| LPV321M5/NOPB | Texas Instruments | Active | SOT-23-5 | 0.1 | 0.152 | 2 | 1.5 | 9 | — | 2.7 | 5 | -40 to 85 | No |
| LPV321M5X/NOPB | National Semiconductor | Active | SOT-23-5 | 0.1 | 0.152 | 2 | 1.5 | 9 | — | 2.7 | 5 | -40 to 85 | No |
| LPV321M7/NOPB | National Semiconductor | Active | SC-70-5 | 0.1 | 0.152 | 2 | 1.5 | 9 | — | 2.7 | 5 | -40 to 85 | No |
| LPV321M7X/NOPB | National Semiconductor | Active | SC-70-5 | 0.1 | 0.152 | 2 | 1.5 | 9 | — | 2.7 | 5 | -40 to 85 | No |
| BU7241G-TR | Rohm Semiconductor | Active | 5-SSOP | 0.4 | 0.9 | 0.001 | 1 | 70 | 12 | 1.8 | 5.5 | -40 to 85 | No |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance, Active Product Status)
LMV321M5/NOPB and LMV321M5X/NOPB are the primary recommended substitutes for the obsolete LMV321IDBVRQ1. Both parts maintain identical electrical specifications and operate within the same supply voltage (2.7 V to 5.5 V) and temperature (-40°C to 85°C) ranges. Both are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. LMV321M5/NOPB is supplied in Cut Tape and Digi-Reel packaging, while LMV321M5X/NOPB is supplied in Tape & Reel format. Selection between these two depends on procurement and assembly requirements. Current inventory levels support both options (7,100 and 65,100 units respectively).
For Automotive-Qualified Applications
LMV321Q3M5/NOPB is the only active substitute that retains AEC-Q100 automotive qualification matching the original part. This part maintains identical electrical performance and SOT-23-5 packaging. Current inventory is 1,159 units. This part is mandatory for applications requiring automotive-grade component certification.
For Alternative Packaging (SC-70-5)
LMV321M7/NOPB and LMV321M7X/NOPB provide identical electrical performance in SC-70-5 (5-TSSOP, SOT-353) surface mount packaging. These parts are suitable only when PCB layout requires SC-70-5 footprint compatibility. Both are ROHS3 compliant with MSL 1 rating. LMV321M7/NOPB is supplied in Cut Tape and Digi-Reel (25,100 units), while LMV321M7X/NOPB is supplied in Tape & Reel (35,200 units).
For Power-Constrained Applications
LPV321M5/NOPB and LPV321M5X/NOPB are applicable only when reduced power consumption (9 µA versus 130 µA) and lower input bias current (2 nA versus 15 nA) are acceptable trade-offs against reduced bandwidth (152 kHz versus 1 MHz) and lower maximum supply voltage (5 V versus 5.5 V). These parts are not direct replacements due to modified electrical characteristics. LPV321M5/NOPB is supplied in Tape & Reel (1,605 units), while LPV321M5X/NOPB is supplied by National Semiconductor (10,100 units).
For Low Input Bias Current Applications
BU7241G-TR from Rohm Semiconductor offers extremely low input bias current (1 pA) and reduced supply current (70 µA) in 5-SSOP packaging. This part is suitable only when input bias current minimization is critical and reduced output current capability (12 mA versus 160 mA) and bandwidth (900 kHz versus 1 MHz) are acceptable. Supply voltage range extends to 1.8 V minimum. Current inventory is 18,200 units.
Frequently Asked Questions (FAQ)
Q: Can LMV321M5/NOPB be used as a direct replacement for LMV321IDBVRQ1?
A: Yes. LMV321M5/NOPB maintains identical electrical specifications: 1 V/µs slew rate, 1 MHz gain bandwidth product, 15 nA input bias current, 1.7 mV input offset voltage, 130 µA supply current, and 160 mA output current per channel. Both operate across 2.7 V to 5.5 V supply range and -40°C to 85°C temperature span. The primary difference is product status (Active versus Obsolete) and packaging format (Cut Tape/Digi-Reel versus original packaging). Both are ROHS3 compliant with MSL 1 rating.
Q: What is the difference between LMV321M5/NOPB and LMV321M5X/NOPB?
A: Both parts are electrically identical with identical specifications and SOT-23-5 packaging. The difference is packaging format: LMV321M5/NOPB is supplied in Cut Tape and Digi-Reel format, while LMV321M5X/NOPB is supplied in Tape & Reel format. Selection depends on assembly line requirements and procurement preferences. LMV321M5X/NOPB has higher current inventory (65,100 units versus 7,100 units).
Q: Why should I choose LMV321Q3M5/NOPB over LMV321M5/NOPB?
A: LMV321Q3M5/NOPB is the only active substitute that retains AEC-Q100 automotive qualification. If your application requires automotive-grade component certification, LMV321Q3M5/NOPB is mandatory. Electrical performance is identical to both LMV321M5/NOPB and the original LMV321IDBVRQ1. Current inventory is 1,159 units.
Q: Can I use LMV321M7/NOPB in place of LMV321IDBVRQ1?
A: LMV321M7/NOPB provides identical electrical performance but uses SC-70-5 (5-TSSOP, SOT-353) packaging instead of SOT-23-5. This substitution is valid only if your PCB layout accommodates SC-70-5 footprint. Electrical specifications remain unchanged: 1 V/µs slew rate, 1 MHz gain bandwidth product, 15 nA input bias current, 1.7 mV input offset voltage, 130 µA supply current, and 160 mA output current per channel.
Q: When should I consider LPV321M5/NOPB as a substitute?
A: LPV321M5/NOPB is not a direct replacement. This part operates at significantly reduced bandwidth (152 kHz versus 1 MHz) and slew rate (0.1 V/µs versus 1 V/µs), with lower supply current (9 µA versus 130 µA) and input bias current (2 nA versus 15 nA). Maximum supply voltage is 5 V instead of 5.5 V. Use LPV321M5/NOPB only when power consumption minimization is critical and reduced bandwidth is acceptable for your application.
Q: What are the advantages of BU7241G-TR from Rohm Semiconductor?
A: BU7241G-TR offers extremely low input bias current (1 pA) and reduced supply current (70 µA). However, this part has reduced output current capability (12 mA versus 160 mA), lower bandwidth (900 kHz versus 1 MHz), and lower slew rate (0.4 V/µs versus 1 V/µs). Use this part only when input bias current minimization is a primary design requirement and reduced output current and bandwidth are acceptable trade-offs.
Q: Are all substitute parts ROHS3 compliant?
A: All Texas Instruments and Rohm Semiconductor parts listed are ROHS3 compliant. National Semiconductor parts (LPV321M5X/NOPB, LPV321M7/NOPB, LPV321M7X/NOPB) do not specify RoHS status in the provided data.
Q: What is the moisture sensitivity level (MSL) for these parts?
A: All Texas Instruments and Rohm Semiconductor parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. National Semiconductor parts do not specify MSL in the provided data.
Q: Can I mix different substitute parts in the same design?
A: Yes, provided all parts meet your electrical requirements. However, mixing parts with different electrical characteristics (such as combining LMV321M5/NOPB with LPV321M5/NOPB) may introduce performance variations. For consistency, use parts from the same electrical category within a single design.
Q: Which substitute has the highest current inventory?
A: LMV321M5X/NOPB has the highest inventory at 65,100 units, followed by LMV321M7X/NOPB at 35,200 units and LMV321M7/NOPB at 25,100 units. For immediate availability, these parts are preferred.
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