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LPV321M7 Equivalent & Substitute Parts
Part Overview
The LPV321M7 is a general-purpose operational amplifier manufactured by Texas Instruments, packaged in SC-70-5 (5-TSSOP) surface mount configuration. This device features rail-to-rail output capability with a gain bandwidth product of 152 kHz and operates across a 2.7 V to 5 V supply range. The LPV321M7 is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production and field support applications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| Output Type | Rail-to-Rail | — |
| Slew Rate | 0.1 | V/µs |
| Gain Bandwidth Product | 152 | kHz |
| Current - Input Bias | 2 | nA |
| Voltage - Input Offset | 1.5 | mV |
| Current - Supply | 9 | µA |
| Current - Output / Channel | 60 | mA |
| Voltage - Supply Span (Min) | 2.7 | V |
| Voltage - Supply Span (Max) | 5 | V |
| Operating Temperature | -40 to 85 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 5-TSSOP, SC-70-5, SOT-353 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LPV321M7 are classified based on electrical parameter compatibility and package form factor. The primary substitution criteria are:
Electrical Compatibility Parameters:
- Rail-to-rail output capability
- Single-circuit configuration
- Supply voltage range spanning 2.7 V minimum to 5 V maximum
- Operating temperature range of -40°C to 85°C minimum
- Surface mount technology
Package Compatibility:
- SC-70-5 (5-TSSOP, SOT-353) package form factor for direct pin-compatible substitution
- SOT-23-5 (SC-74A, SOT-753) package for alternative footprint applications
Substitute parts are grouped into two categories:
Category 1: Direct Package Equivalents (SC-70-5) Parts maintaining identical SC-70-5 package configuration: LPV321M7/NOPB, LPV321M7X/NOPB, LMV321IDCKR, LMV321IDCKT, and LMV321LICT.
Category 2: Alternative Package Substitutes (SOT-23-5) Parts with different package form factor but compatible electrical specifications: LMV321IDBVR and LMV321IDBVT.
Parameter Comparison
| Parameter | LPV321M7 | LPV321M7/NOPB | LPV321M7X/NOPB | LMV321IDBVR | LMV321IDBVT | LMV321IDCKR | LMV321IDCKT | LMV321LICT |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | National Semiconductor | UMW | Texas Instruments | UMW | Texas Instruments | STMicroelectronics |
| Amplifier Type | General Purpose | General Purpose | General Purpose | Voltage Feedback | General Purpose | Voltage Feedback | General Purpose | General Purpose |
| Number of Circuits | 1 | 1 | 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 | Rail-to-Rail | Rail-to-Rail |
| Slew Rate (V/µs) | 0.1 | 0.1 | 0.1 | — | 1 | — | 1 | 0.7 |
| Gain Bandwidth Product (kHz) | 152 | 152 | 152 | 1000 | 1000 | 1000 | 1000 | 1300 |
| Current - Input Bias (nA) | 2 | 2 | 2 | 0.01 | 15 | 0.01 | 15 | 27 |
| Voltage - Input Offset (mV) | 1.5 | 1.5 | 1.5 | 0.8 | 1.7 | 0.8 | 1.7 | 1 |
| Current - Supply (µA) | 9 | 9 | 9 | 45 | 130 | 45 | 130 | 130 |
| Current - Output / Channel (mA) | 60 | — | — | 25 | — | 25 | — | 70 |
| Voltage - Supply Span (Min) | 2.7 V | 2.7 V | 2.7 V | 2.1 V | 2.7 V | 2.1 V | 2.7 V | 2.7 V |
| Voltage - Supply Span (Max) | 5 V | 5 V | 5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Operating Temperature (°C) | -40 to 85 | -40 to 85 | -40 to 85 | -25 to 85 | -40 to 125 | -25 to 85 | -40 to 125 | -40 to 125 |
| Package / Case | SC-70-5 | SC-70-5 | SC-70-5 | SOT-23-5 | SOT-23-5 | SC-70-5 | SC-70-5 | SC-70-5 |
| 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) | 2 (1 Year) | 1 (Unlimited) |
| Product Status | Last Time Buy | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Direct Package Substitutes (SC-70-5 Configuration):
LPV321M7/NOPB and LPV321M7X/NOPB are direct electrical and mechanical equivalents manufactured by National Semiconductor. These parts maintain identical electrical specifications and SC-70-5 package configuration, enabling pin-for-pin substitution without circuit modification. Both parts carry Active product status and ROHS3 compliance.
LMV321IDCKT (Texas Instruments) and LMV321LICT (STMicroelectronics) are SC-70-5 packaged alternatives with enhanced electrical performance characteristics. These parts feature increased gain bandwidth product (1 MHz and 1.3 MHz respectively), higher slew rates, and extended operating temperature ranges (-40°C to 125°C). LMV321IDCKT maintains Texas Instruments manufacturing continuity. LMV321LICT offers superior output current capability (70 mA) and improved input offset voltage (1 mV). Both parts are ROHS3 compliant and carry Active product status.
LMV321IDCKR (UMW) provides SC-70-5 package compatibility with voltage feedback amplifier topology. This part operates across an extended supply voltage range (2.1 V to 5.5 V) and features lower input bias current (10 pA). ROHS3 compliance and MSL 1 rating are maintained.
Alternative Package Substitutes (SOT-23-5 Configuration):
LMV321IDBVT (Texas Instruments) and LMV321IDBVR (UMW) employ SOT-23-5 package configuration, requiring PCB layout modification. These parts deliver enhanced performance with 1 MHz gain bandwidth product and are suitable for applications where package footprint optimization is prioritized. LMV321IDBVT extends operating temperature to 125°C and carries Active product status with ROHS3 compliance. LMV321IDBVR operates to 85°C with ROHS3 compliance and MSL 1 rating.
Compliance and Availability:
All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original LPV321M7. Inventory availability ranges from 3,200 to 425,200 units across substitute options, ensuring supply chain continuity. Parts designated Active status provide long-term availability assurance compared to the Last Time Buy status of the original component.
Frequently Asked Questions (FAQ)
Q: Can LPV321M7/NOPB and LPV321M7X/NOPB be used as direct replacements for LPV321M7?
A: Yes. Both parts are manufactured by National Semiconductor and maintain identical electrical specifications and SC-70-5 package configuration. No circuit modification or PCB layout changes are required for substitution.
Q: What is the primary difference between LMV321IDCKT and the original LPV321M7?
A: LMV321IDCKT features a 10-fold increase in gain bandwidth product (1 MHz versus 152 kHz), higher slew rate (1 V/µs versus 0.1 V/µs), and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). The SC-70-5 package remains identical, enabling direct substitution. These enhanced specifications support higher-frequency applications.
Q: Why would LMV321LICT be selected over LMV321IDCKT?
A: LMV321LICT offers superior output current capability (70 mA versus unspecified for LMV321IDCKT) and improved input offset voltage (1 mV versus 1.7 mV). Selection depends on application requirements for output drive capability and precision. Both maintain SC-70-5 package compatibility and Active product status.
Q: Are SOT-23-5 packaged alternatives (LMV321IDBVT, LMV321IDBVR) pin-compatible with SC-70-5 packages?
A: No. SOT-23-5 and SC-70-5 packages have different physical dimensions and pin configurations. While electrical specifications are compatible, PCB layout and footprint redesign is required. These alternatives are suitable only for new designs or redesign projects where package optimization is beneficial.
Q: What is the significance of the Last Time Buy status for LPV321M7?
A: Last Time Buy designation indicates discontinued production. Substitute parts with Active product status provide long-term availability assurance. Transition to an Active substitute part is recommended for ongoing production requirements.
Q: Do all substitute parts maintain the same supply voltage range as LPV321M7?
A: The LPV321M7 operates from 2.7 V to 5 V. LMV321IDBVR and LMV321IDCKR extend the minimum supply voltage to 2.1 V. All substitutes support the 5 V maximum specification. Verify application supply voltage requirements before selection.
Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?
A: Cut Tape packaging provides individual component strips suitable for manual assembly or small-volume production. Tape & Reel packaging supplies components on continuous reels for automated assembly equipment. Both packaging formats contain identical components; selection depends on assembly process requirements.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed carry ROHS3 compliance certification, consistent with the original LPV321M7. REACH unaffected status is maintained across all substitutes.
Q: What does Moisture Sensitivity Level (MSL) 1 indicate?
A: MSL 1 (Unlimited) indicates the component has unlimited shelf life without moisture baking requirements. LMV321IDCKT carries MSL 2 (1 Year), requiring moisture baking if storage exceeds one year. This affects component handling and storage procedures.
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