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LMV324ID Equivalent & Substitute Parts
Part Overview
The LMV324ID is a general-purpose operational amplifier manufactured by Texas Instruments, configured as a quad-channel (4-circuit) rail-to-rail amplifier in a 14-SOIC surface-mount package. This device is classified as Last Time Buy, indicating discontinued production status. The LMV324ID operates across a supply voltage range of 2.7 V to 5.5 V with an operating temperature range of -40°C to 125°C, making it suitable for low-power analog signal processing applications.
Due to its Last Time Buy status, identifying equivalent and substitute parts is necessary for design continuity and long-term component availability. Substitute parts are selected based on matching electrical characteristics, package compatibility, and functional equivalence within the general-purpose amplifier category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 4 | — |
| 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 (x4 Channels) | 410 | µA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 2.7 | 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 (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the LMV324ID are selected based on the following critical parameters that determine functional equivalence:
Primary Matching Criteria:
- Number of Circuits: 4 (quad-channel configuration)
- Output Type: Rail-to-Rail
- Package / Case: 14-SOIC surface-mount
- Mounting Type: Surface Mount
- Voltage - Supply Span: Minimum 2.7 V, Maximum 5.5 V
- Operating Temperature Range: -40°C to 125°C (or compatible subset)
Secondary Electrical Characteristics:
- Gain Bandwidth Product: 1 MHz (or equivalent performance class)
- Slew Rate: 1 V/µs (or equivalent)
- Current - Input Bias: 15 nA (or lower)
- Voltage - Input Offset: 1.7 mV (or lower)
- Current - Output / Channel: 40 mA (or higher)
Substitute parts are grouped into two categories: direct Texas Instruments LMV324 series variants with identical electrical specifications and alternative manufacturer devices that meet the same functional requirements within the specified parameter ranges.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Number of Circuits | Output Type | 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 | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMV324ID | Texas Instruments | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 40 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Last Time Buy |
| LMV324M/NOPB | Texas Instruments | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV324MX/NOPB | Texas Instruments | General Purpose | 4 | Rail-to-Rail | 1 | 1 | 15 | 1.7 | 410 | 160 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| LMV324IDR | UMW | Voltage Feedback | 4 | Rail-to-Rail | — | 1 | 0.01 | 0.8 | 45 | 25 | 2.1 | 5.5 | -25 to 85 | 14-SOIC | Active |
| LPV324M/NOPB | Texas Instruments | General Purpose | 4 | Rail-to-Rail | 0.1 | 0.152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC | Active |
| LPV324MX/NOPB | Texas Instruments | General Purpose | 4 | Rail-to-Rail | 0.1 | 0.152 | 2 | 1.5 | 28 | 16 | 2.7 | 5 | -40 to 85 | 14-SOIC | Active |
| AD8544ARZ-REEL7 | Analog Devices Inc. | General Purpose | 4 | Rail-to-Rail | 0.92 | 1 | 0.004 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| AD8544WARZ-RL | Analog Devices Inc. | General Purpose | 4 | Rail-to-Rail | 0.92 | 1 | 0.004 | 1 | 45 | 30 | 2.7 | 5.5 | -40 to 125 | 14-SOIC | Active |
| BU7244F-E2 | Rohm Semiconductor | CMOS | 4 | Rail-to-Rail | 0.4 | 0.9 | 0.001 | 1 | 360 | 12 | 1.8 | 5.5 | -40 to 85 | 14-SOIC | Active |
| BU7244SF-E2 | Rohm Semiconductor | CMOS | 4 | Rail-to-Rail | 0.4 | 0.9 | 0.001 | 1 | 360 | 12 | 1.8 | 5.5 | -40 to 85 | 14-SOIC | Active |
| BU7487F-E2 | Rohm Semiconductor | CMOS | 4 | Rail-to-Rail | 10 | 10 | 0.001 | 1 | 6000 | 12 | 3 | 5.5 | -40 to 105 | 14-SOIC | Active |
Engineering Selection Recommendations
Direct Equivalents (Highest Compatibility):
LMV324M/NOPB and LMV324MX/NOPB are direct substitutes for the LMV324ID. Both are Texas Instruments LMV324 series devices with identical electrical specifications and 14-SOIC packaging. The primary difference is packaging format: LMV324M/NOPB is supplied in Tube packaging, while LMV324MX/NOPB is supplied in Cut Tape and Digi-Reel format. Both devices are Active status products with full availability. The LMV324MX/NOPB variant offers significantly higher inventory (177,800 pieces) compared to LMV324M/NOPB (2,202 pieces), making it the preferred choice for volume applications.
Alternative Manufacturers (Full Electrical Compatibility):
AD8544ARZ-REEL7 and AD8544WARZ-RL (Analog Devices Inc.) provide equivalent functionality with identical 1 MHz gain bandwidth product and 1 V/µs slew rate. These devices maintain the full -40°C to 125°C operating temperature range and 2.7 V to 5.5 V supply voltage compatibility. The AD8544 series exhibits superior input bias current (4 pA versus 15 nA) and lower input offset voltage (1 mV versus 1.7 mV). Both variants are Active status with substantial inventory availability (26,342 and 24,710 pieces respectively).
Lower-Power Alternative (Reduced Performance):
LPV324M/NOPB and LPV324MX/NOPB are Texas Instruments low-power variants suitable for applications where reduced bandwidth and slew rate are acceptable. These devices operate at 28 µA total supply current (versus 410 µA for LMV324ID) and feature lower input bias current (2 nA). However, the gain bandwidth product is reduced to 152 kHz and slew rate to 0.1 V/µs. Maximum operating temperature is limited to 85°C. These variants are appropriate only for applications with relaxed frequency response requirements.
Specialized CMOS Alternatives (Specific Application Requirements):
BU7244F-E2, BU7244SF-E2, and BU7487F-E2 (Rohm Semiconductor) are CMOS-based amplifiers with ultra-low input bias current (1 pA). BU7244 variants operate at 900 kHz bandwidth with 0.4 V/µs slew rate, suitable for low-power, low-frequency applications. BU7487F-E2 provides significantly higher performance with 10 MHz bandwidth and 10 V/µs slew rate, but requires minimum 3 V supply and higher supply current (6 mA). These devices are appropriate only when CMOS characteristics and specific performance parameters align with application requirements.
Compliance and Regulatory Status:
All substitute parts listed are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All devices maintain MSL 1 (Unlimited) moisture sensitivity rating. These certifications ensure regulatory compatibility across industrial, commercial, and consumer applications.
Frequently Asked Questions (FAQ)
Q: Can LMV324M/NOPB directly replace LMV324ID in existing designs?
A: Yes. LMV324M/NOPB is a direct equivalent with identical electrical specifications, supply voltage range (2.7 V to 5.5 V), operating temperature range (-40°C to 125°C), and 14-SOIC package. The only difference is packaging format (Tube versus original packaging). No circuit modifications are required.
Q: What is the primary difference between LMV324MX/NOPB and LMV324M/NOPB?
A: Both devices are electrically identical. The difference is packaging and delivery format. LMV324MX/NOPB is supplied in Cut Tape and Digi-Reel format with significantly higher inventory availability (177,800 pieces), making it preferable for production applications. LMV324M/NOPB is supplied in Tube format with lower inventory (2,202 pieces).
Q: Can AD8544ARZ-REEL7 replace LMV324ID without circuit redesign?
A: Yes, with design verification. AD8544ARZ-REEL7 maintains identical supply voltage range, operating temperature range, and 14-SOIC package. Electrical performance is superior (lower input bias current and offset voltage). However, the device is manufactured by Analog Devices Inc. rather than Texas Instruments. Functional compatibility is confirmed, but design validation is recommended for critical applications.
Q: Why would I select LPV324M/NOPB over LMV324M/NOPB?
A: LPV324M/NOPB is selected only when power consumption is critical. It operates at 28 µA total supply current versus 410 µA for LMV324M/NOPB, a 93% reduction. This selection is appropriate for battery-powered or ultra-low-power applications where the reduced bandwidth (152 kHz versus 1 MHz) and slew rate (0.1 V/µs versus 1 V/µs) meet application requirements. Maximum operating temperature is limited to 85°C.
Q: Are CMOS alternatives (BU7244, BU7487) suitable for general-purpose applications?
A: CMOS alternatives are suitable only for specific applications requiring ultra-low input bias current (1 pA) or extended supply voltage range (down to 1.8 V for BU7244). BU7244 variants operate at reduced bandwidth (900 kHz) and slew rate (0.4 V/µs). BU7487F-E2 provides higher performance (10 MHz, 10 V/µs) but requires minimum 3 V supply and higher current consumption (6 mA). Selection depends on specific application requirements rather than general-purpose use.
Q: Is the 14-SOIC package identical across all substitute parts?
A: The 14-SOIC package is standardized for all listed substitutes. However, package width varies slightly: LMV324 and AD8544 variants use 0.154" (3.90mm) width, while BU7244 and BU7487 variants use 0.173" (4.40mm) width. Both widths are within standard 14-SOIC specifications and are compatible with standard surface-mount assembly equipment. Verify PCB footprint compatibility before final selection.
Q: What is the significance of "Last Time Buy" status for LMV324ID?
A: Last Time Buy status indicates that Texas Instruments has discontinued production of LMV324ID. Existing inventory will be depleted without replenishment. Designs using LMV324ID must transition to an active-status substitute part. LMV324M/NOPB or LMV324MX/NOPB are recommended as direct replacements to ensure long-term component availability and supply chain continuity.
Q: Can I mix substitute parts from different manufacturers in the same design?
A: Yes, provided all selected parts meet the application's electrical requirements. However, design validation is recommended when mixing manufacturers. Subtle differences in input bias current, offset voltage, and slew rate may affect circuit performance in precision applications. Maintain consistent part selection within production batches to ensure reproducible performance.
Q: What is the difference between Cut Tape and Digi-Reel packaging?
A: Both Cut Tape and Digi-Reel are continuous-strip packaging formats suitable for automated assembly. Digi-Reel is a proprietary format with enhanced handling characteristics. Both formats are compatible with standard pick-and-place equipment. Selection depends on assembly line equipment compatibility and inventory management preferences.
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