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LMV321IDBVRE4 Equivalent & Substitute Parts
Part Overview
The LMV321IDBVRE4 is a general-purpose operational amplifier manufactured by Texas Instruments, designed for rail-to-rail signal processing applications. This device features a single amplifier circuit in a SOT-23-5 surface mount package with a 1 MHz gain bandwidth product and 1V/µs slew rate. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility across supply voltage, output characteristics, and thermal operating ranges while accommodating different package options and manufacturer sources.
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 125 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | SC-74A, SOT-753 | — |
| Supplier Device Package | SOT-23-5 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the LMV321IDBVRE4 is determined by the following critical parameters:
Primary Substitution Criteria:
- Single amplifier circuit configuration
- Rail-to-rail output capability
- 1 MHz gain bandwidth product
- 1V/µs slew rate
- Supply voltage range: 2.7V to 5.5V minimum
- Input bias current: 15 nA nominal
- Input offset voltage: 1.7 mV nominal
- Output current capability: 160 mA per channel
- Supply current: 130 µA nominal
- Operating temperature range: minimum -40°C to 85°C
Package Compatibility: Substitutes are grouped by package type: SOT-23-5 (SC-74A) maintains direct pin compatibility; SC-70-5 (5-TSSOP) variants require PCB layout modification but preserve electrical function.
Product Status Consideration: The original part is discontinued. Active substitutes from Texas Instruments (LMV321M5/NOPB, LMV321M5X/NOPB) provide identical electrical specifications with extended inventory availability. Alternative manufacturers (UMW, National Semiconductor, Diodes Incorporated) offer functionally compatible devices with minor parameter variations within acceptable engineering tolerances.
Parameter Comparison
| Parameter | LMV321IDBVRE4 | LMV321M5/NOPB | LMV321M5X/NOPB | LMV321IDBVR (UMW) | LMV321M7/NOPB | APX321WG-7 |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | UMW | Texas Instruments | Diodes Incorporated |
| Amplifier Type | General Purpose | General Purpose | General Purpose | Voltage Feedback | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 1 | 1 | 1 | — | 1 | 1 |
| Gain Bandwidth Product (MHz) | 1 | 1 | 1 | 1 | 1 | 1 |
| Current - Input Bias (nA) | 15 | 15 | 15 | 10 pA | 15 | 15 |
| Voltage - Input Offset (mV) | 1.7 | 1.7 | 1.7 | 0.8 µV | 1.7 | 1.7 |
| Current - Supply (µA) | 130 | 130 | 130 | 45 | 130 | 110 |
| Current - Output / Channel (mA) | 160 | 160 | 160 | 25 | 160 | 90 |
| Voltage - Supply Span Min (V) | 2.7 | 2.7 | 2.7 | 2.1 | 2.7 | 2.5 |
| Voltage - Supply Span Max (V) | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Operating Temperature (°C) | -40 to 125 | -40 to 85 | -40 to 85 | -25 to 85 | -40 to 85 | -40 to 85 |
| Package / Case | SC-74A, SOT-753 | SC-74A, SOT-753 | SC-74A, SOT-753 | SC-74A, SOT-753 | 5-TSSOP, SC-70-5, SOT-353 | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 | SOT-23-5 | SOT-23-5 | SOT-23-5 | SC-70-5 | SOT-25 |
| Product Status | Discontinued | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) |
Engineering Selection Recommendations
Tier 1 - Direct Replacement (Identical Electrical Specifications):
LMV321M5/NOPB and LMV321M5X/NOPB are the primary substitutes for LMV321IDBVRE4. Both devices are manufactured by Texas Instruments, maintain identical electrical parameters (1 MHz bandwidth, 1V/µs slew rate, 160 mA output current, 130 µA supply current), and are packaged in SOT-23-5. These parts are active products with substantial inventory availability (7,100 and 65,100 units respectively). The only parameter variance is operating temperature range, reduced to -40°C to 85°C versus the original -40°C to 125°C. Selection between M5 and M5X variants depends on packaging requirements: M5 is supplied in Cut Tape and Digi-Reel format; M5X is supplied in Cut Tape and Digi-Reel format with higher inventory.
Tier 2 - Package-Compatible Alternatives (SOT-23-5):
LMV321IDBVR (UMW) provides SOT-23-5 package compatibility with active product status and 425,200 units in stock. This device exhibits superior input bias current (10 pA versus 15 nA) and lower supply current (45 µA versus 130 µA), making it suitable for low-power applications. However, output current capability is reduced to 25 mA, and operating temperature minimum is -25°C. APX321WG-7 (Diodes Incorporated) maintains SOT-23-5 compatibility with 1 MHz bandwidth and 1V/µs slew rate. Supply current is 110 µA and output current is 90 mA. Moisture sensitivity level is MSL 3, requiring controlled storage conditions.
Tier 3 - Package-Alternative Substitutes (SC-70-5):
LMV321M7/NOPB and LMV321M7X/NOPB are Texas Instruments devices in SC-70-5 (5-TSSOP) package. Electrical specifications are identical to the original part (1 MHz bandwidth, 1V/µs slew rate, 160 mA output current, 130 µA supply current). These variants require PCB layout modification due to different pin configuration but maintain full functional compatibility. Product status is active with 25,100 and 35,200 units in stock respectively.
Compliance and Certification:
All recommended substitutes are ROHS3 compliant and REACH unaffected. MSL rating of 1 (unlimited) applies to all Texas Instruments and UMW variants, indicating no moisture sensitivity restrictions. APX321WG-7 carries MSL 3 rating, requiring 168-hour moisture control during storage and handling.
Frequently Asked Questions (FAQ)
Q: Can LMV321M5/NOPB directly replace LMV321IDBVRE4 without PCB modification?
A: Yes. LMV321M5/NOPB is packaged in SOT-23-5, identical to the original part. Pin configuration, electrical specifications (1 MHz bandwidth, 1V/µs slew rate, 160 mA output current), and supply voltage range (2.7V to 5.5V) are equivalent. The only difference is operating temperature range, reduced to -40°C to 85°C. If your application operates within this temperature range, no PCB modification is required.
Q: What is the difference between LMV321M5/NOPB and LMV321M5X/NOPB?
A: Both devices are electrically identical with SOT-23-5 packaging. The primary difference is packaging format and inventory availability. LMV321M5/NOPB is supplied in Cut Tape and Digi-Reel format with 7,100 units in stock. LMV321M5X/NOPB is supplied in Cut Tape and Digi-Reel format with 65,100 units in stock. Selection depends on procurement volume and delivery timeline requirements.
Q: Why does LMV321IDBVR (UMW) have lower supply current but reduced output current?
A: LMV321IDBVR is optimized for low-power applications with 45 µA supply current versus 130 µA in the original part. This optimization reduces output current capability to 25 mA. Applications requiring full 160 mA output current must use LMV321M5/NOPB or equivalent Texas Instruments variants. Verify output current requirements before selecting this substitute.
Q: Can I use LMV321M7/NOPB (SC-70-5 package) as a substitute?
A: LMV321M7/NOPB is electrically equivalent with identical 1 MHz bandwidth, 1V/µs slew rate, and 160 mA output current. However, SC-70-5 package has different pin configuration than SOT-23-5. PCB layout modification is required, including trace routing and component placement changes. Use this substitute only if PCB redesign is feasible.
Q: What are the temperature operating range limitations for substitutes?
A: The original LMV321IDBVRE4 operates from -40°C to 125°C. Most active substitutes (LMV321M5/NOPB, LMV321M7/NOPB, APX321WG-7) operate from -40°C to 85°C, reducing maximum temperature by 40°C. LMV321IDBVR (UMW) operates from -25°C to 85°C, reducing minimum temperature by 15°C. Verify your application's temperature requirements before selection.
Q: Is APX321WG-7 suitable for moisture-sensitive environments?
A: APX321WG-7 carries MSL 3 rating, requiring 168-hour moisture control during storage and handling. This is more restrictive than the original part (MSL 1, unlimited). If your supply chain or storage environment cannot maintain MSL 3 conditions, select LMV321M5/NOPB or other MSL 1 variants.
Q: What is the minimum supply voltage for each substitute?
A: LMV321M5/NOPB, LMV321M7/NOPB, and LPV321 variants operate at 2.7V minimum. LMV321IDBVR (UMW) operates at 2.1V minimum, providing wider low-voltage compatibility. APX321WG-7 operates at 2.5V minimum. Verify your minimum supply voltage requirement before selection.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All recommended substitutes (LMV321M5/NOPB, LMV321M5X/NOPB, LMV321IDBVR, LMV321M7/NOPB, LMV321M7X/NOPB, APX321WG-7) are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.
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