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LMV321M5 Equivalent & Substitute Parts
Part Overview
The LMV321M5 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device features rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications. The LMV321M5 is classified as obsolete, with 2,972 units available in current inventory. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and long-term component availability assurance.
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 |
| Mounting Type | Surface Mount | — |
| Package / Case | SC-74A, SOT-753 | — |
| Supplier Device Package | SOT-23-5 | — |
Substitute Part Grouping Explanation
Substitution of the LMV321M5 is determined by electrical and mechanical compatibility across the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: General Purpose
- Number of Circuits: 1
- Output Type: Rail-to-Rail
- Mounting Type: Surface Mount
- Supplier Device Package: SOT-23-5 (primary) or compatible packages (SOT-25, 5-SSOP)
- Voltage Supply Range: Minimum 2.7 V, Maximum 5.5 V
- Operating Temperature Range: -40°C to 85°C (minimum requirement)
Secondary Compatibility Parameters:
- Slew Rate: 1 V/µs or greater
- Gain Bandwidth Product: 1 MHz or greater
- Current - Input Bias: 15 nA or lower
- Voltage - Input Offset: 1.7 mV or lower
- Current - Supply: 130 µA or lower
- Current - Output / Channel: 160 mA or greater
Substitute parts are grouped into two categories: direct equivalents (identical electrical specifications and package) and functional equivalents (enhanced performance characteristics with compatible packages). All substitute parts listed maintain active product status and RoHS3 compliance, ensuring long-term availability and regulatory conformance.
Parameter Comparison
| Part Number | Manufacturer | Product Status | 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) | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV321M5 | Texas Instruments | Obsolete | 1 | 1 | 15 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | SOT-23-5 | Non-compliant |
| LMV321M5/NOPB | Texas Instruments | Active | 1 | 1 | 15 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | SOT-23-5 | RoHS3 Compliant |
| LMV321M5X/NOPB | Texas Instruments | Active | 1 | 1 | 15 | 1.7 | 130 | — | 2.7 | 5.5 | -40 to 85 | SOT-23-5 | RoHS3 Compliant |
| ADA4891-1ARJZ-R7 | Analog Devices Inc. | Active | 210 | 240 | 0.002 | 2.5 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | SOT-23-5 | RoHS3 Compliant |
| ADA4891-1ARJZ-RL | Analog Devices Inc. | Active | 210 | 240 | 0.002 | 2.5 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | SOT-23-5 | RoHS3 Compliant |
| APX321WG-7 | Diodes Incorporated | Active | 1 | 1 | 15 | 1.7 | 110 | 90 | 2.5 | 5.5 | -40 to 85 | SOT-25 | RoHS3 Compliant |
| AZV321KTR-G1 | Diodes Incorporated | Active | 1 | 1 | 250 | 1.7 | 130 | 160 | 2.7 | 5.5 | -40 to 85 | SOT-23-5 | RoHS3 Compliant |
| BD5291G-GTL | Rohm Semiconductor | Active | 2.5 | 3.2 | 0.001 | 0.1 | 650 | 15 | 1.7 | 5.5 | -40 to 85 | 5-SSOP | RoHS3 Compliant |
| BU7241G-TR | Rohm Semiconductor | Active | 0.4 | 0.9 | 0.001 | 1 | 70 | 12 | 1.8 | 5.5 | -40 to 85 | 5-SSOP | RoHS3 Compliant |
| LMV321ILT | STMicroelectronics | Active | 0.45 | 1.3 | 16 | 0.1 | 162 | 48 | 2.7 | 6 | -40 to 125 | SOT-23-5 | RoHS3 Compliant |
| LMV321IYLT | STMicroelectronics | Active | 0.45 | 1.3 | 16 | 0.1 | 162 | 48 | 2.7 | 6 | -40 to 125 | SOT-23-5 | RoHS3 Compliant |
Engineering Selection Recommendations
Direct Equivalents (Identical Electrical Performance):
LMV321M5/NOPB and LMV321M5X/NOPB are direct equivalents to the obsolete LMV321M5, offering identical electrical specifications and SOT-23-5 packaging. Both parts are manufactured by Texas Instruments and maintain active product status with RoHS3 compliance. LMV321M5/NOPB carries 7,100 units in inventory, while LMV321M5X/NOPB has 65,100 units available, providing superior supply assurance for production continuity.
Functional Equivalents (Enhanced Performance, Compatible Package):
APX321WG-7 (Diodes Incorporated) provides electrical equivalence with SOT-25 packaging. This part maintains identical slew rate, gain bandwidth product, input bias current, and input offset voltage specifications. Supply current is reduced to 110 µA, and output current is 90 mA. The minimum supply voltage is 2.5 V, providing broader low-voltage compatibility. This part is suitable for applications where package footprint differences are acceptable.
AZV321KTR-G1 (Diodes Incorporated) offers SOT-23-5 packaging with electrical equivalence, except for input bias current of 250 nA. This part is available in Tape & Reel packaging format and carries 35,400 units in inventory. It is suitable for high-volume production environments.
LMV321ILT and LMV321IYLT (STMicroelectronics) provide enhanced performance with extended operating temperature range (-40°C to 125°C), improved input offset voltage (0.1 mV), and higher maximum supply voltage (6 V). LMV321IYLT includes automotive-grade qualification (AEC-Q100), making it suitable for automotive applications. Both parts maintain SOT-23-5 packaging and active product status.
Performance-Enhanced Alternatives:
ADA4891-1ARJZ-R7 and ADA4891-1ARJZ-RL (Analog Devices Inc.) offer significantly enhanced performance characteristics: slew rate of 210 V/µs, gain bandwidth product of 240 MHz, and input bias current of 2 pA. These parts support extended operating temperature range (-40°C to 125°C) and are suitable for applications requiring higher bandwidth and faster transient response. Supply current is elevated to 4.4 mA. Both variants are available in SOT-23-5 packaging with 12,100 and 15,400 units in inventory respectively.
BD5291G-GTL (Rohm Semiconductor) provides enhanced slew rate (2.5 V/µs) and gain bandwidth product (3.2 MHz) in 5-SSOP packaging. Input bias current is 1 pA with input offset voltage of 100 µV. This part is suitable for applications requiring improved precision and faster response characteristics.
BU7241G-TR (Rohm Semiconductor) offers low-power operation with supply current of 70 µA and extended minimum supply voltage compatibility (1.8 V). This part is suitable for battery-powered and ultra-low-power applications. It is available in 5-SSOP packaging with 18,200 units in inventory.
All substitute parts listed maintain RoHS3 compliance and active product status, ensuring regulatory conformance and long-term availability.
Frequently Asked Questions (FAQ)
Q: Can LMV321M5/NOPB be used as a direct replacement for LMV321M5?
A: Yes. LMV321M5/NOPB is a direct equivalent with identical electrical specifications and SOT-23-5 packaging. The primary difference is product status (active versus obsolete) and RoHS3 compliance. This part is the recommended replacement for obsolete inventory.
Q: What is the difference between LMV321M5X/NOPB and LMV321M5/NOPB?
A: Both parts are electrically identical with identical specifications and SOT-23-5 packaging. The primary distinction is inventory availability: LMV321M5X/NOPB has 65,100 units in stock compared to 7,100 units for LMV321M5/NOPB, providing superior supply assurance.
Q: Can APX321WG-7 replace LMV321M5 in existing designs?
A: APX321WG-7 provides electrical equivalence with identical slew rate, gain bandwidth product, input bias current, and input offset voltage. The package differs (SOT-25 versus SOT-23-5), requiring PCB layout modification. The minimum supply voltage is 2.5 V versus 2.7 V for the original part. This substitution is suitable when package footprint changes are acceptable.
Q: What are the advantages of LMV321ILT over LMV321M5?
A: LMV321ILT offers extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), improved input offset voltage (0.1 mV versus 1.7 mV), and higher maximum supply voltage (6 V versus 5.5 V). Slew rate and gain bandwidth product are slightly enhanced. This part maintains SOT-23-5 packaging and active product status.
Q: Is LMV321IYLT suitable for automotive applications?
A: Yes. LMV321IYLT is qualified to AEC-Q100 automotive standards and carries automotive-grade designation. It provides identical electrical performance to LMV321ILT with extended operating temperature range (-40°C to 125°C) and improved input offset voltage (0.1 mV). This part is suitable for automotive circuit designs.
Q: When should ADA4891-1ARJZ-R7 or ADA4891-1ARJZ-RL be selected?
A: These parts are selected when applications require significantly enhanced performance: slew rate of 210 V/µs, gain bandwidth product of 240 MHz, and input bias current of 2 pA. These characteristics support high-speed signal processing and precision analog applications. Supply current is elevated to 4.4 mA. Both variants are available in SOT-23-5 packaging.
Q: What is the difference between ADA4891-1ARJZ-R7 and ADA4891-1ARJZ-RL?
A: Both parts are electrically identical with identical specifications and SOT-23-5 packaging. The designation suffix indicates different tape and reel configurations for manufacturing and supply chain purposes. Selection between these variants depends on procurement and production requirements.
Q: Can BD5291G-GTL be used in place of LMV321M5?
A: BD5291G-GTL provides enhanced performance with slew rate of 2.5 V/µs and gain bandwidth product of 3.2 MHz. However, the package differs (5-SSOP versus SOT-23-5), requiring PCB layout modification. Output current is reduced to 15 mA versus 160 mA for the original part. This substitution is suitable for applications where enhanced precision and faster response are required and output current requirements are lower.
Q: Is BU7241G-TR suitable for low-power applications?
A: Yes. BU7241G-TR is optimized for low-power operation with supply current of 70 µA and extended minimum supply voltage compatibility (1.8 V). This part is suitable for battery-powered and ultra-low-power applications. The package is 5-SSOP, requiring PCB layout modification from the original SOT-23-5. Slew rate is 0.4 V/µs and gain bandwidth product is 900 kHz.
Q: What packaging options are available for LMV321 equivalents?
A: Substitute parts are available in three package types: SOT-23-5 (LMV321M5/NOPB, LMV321M5X/NOPB, ADA4891-1ARJZ-R7, ADA4891-1ARJZ-RL, AZV321KTR-G1, LMV321ILT, LMV321IYLT), SOT-25 (APX321WG-7), and 5-SSOP (BD5291G-GTL, BU7241G-TR). Package selection depends on PCB layout constraints and application requirements.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain RoHS3 compliance and active product status, ensuring regulatory conformance and long-term availability for production and design support.
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