LMV821M5 Equivalent & Substitute Parts

Part Overview

The LMV821M5 is a general-purpose operational amplifier manufactured by Texas Instruments, packaged in SOT-23-5 surface mount configuration. This single-circuit, rail-to-rail output amplifier operates across a 2.5V to 5.5V supply range with a 5.6 MHz gain bandwidth product and 2V/µs slew rate. The LMV821M5 is designated as Last Time Buy, indicating discontinued production status. Identification of functionally equivalent substitute components is necessary to ensure design continuity and procurement availability for new production runs and legacy system support.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	2	V/µs
Gain Bandwidth Product	5.6	MHz
Current - Input Bias	100	nA
Voltage - Input Offset	3.5	mV
Current - Supply	300	µA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV821M5 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Package / Case: SC-74A, SOT-753 (SOT-23-5 pinout)
Mounting Type: Surface Mount
Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Voltage - Supply Span: Minimum 2.5V, Maximum 5.5V
Operating Temperature Range: Minimum -40°C, Maximum 85°C or higher
RoHS3 Compliance and MSL Level 1

Secondary Performance Parameters (allowable variance):

Slew Rate: 2V/µs nominal (acceptable range: 1.9V/µs to 6V/µs)
Gain Bandwidth Product: 5.6 MHz nominal (acceptable range: 4 MHz to 7.5 MHz)
Current - Input Bias: 100 nA nominal (acceptable range: 0.1 pA to 1 pA)
Voltage - Input Offset: 3.5 mV nominal (acceptable range: 0.8 mV to 3.5 mV)
Current - Supply: 300 µA nominal (acceptable range: 50 µA to 530 µA)
Current - Output / Channel: 45 mA nominal (acceptable range: 12 mA to 70 mA)

Substitute parts meeting all primary criteria and falling within acceptable secondary parameter ranges are classified as direct functional equivalents.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Temp Range (°C)	Product Status
LMV821M5	Texas Instruments	2	5.6	100	3.5	300	45	-40 to 85	Last Time Buy
LMV821M5/NOPB	National Semiconductor	2	5.6	100	3.5	300	45	-40 to 85	Active
LMV821M5X/NOPB	National Semiconductor	2	5.6	100	3.5	300	45	-40 to 85	Active
LMV821AILT	STMicroelectronics	1.9	5.5	60	0.8	300	70	-40 to 125	Active
LMV821ILT	STMicroelectronics	1.9	5.5	60	3.5	300	70	-40 to 125	Active
MAX4400AUK+T	Analog Devices Inc./Maxim Integrated	1	0.8	0.1	0.8	410	45	-40 to 125	Active
MAX4480AUK+T	Analog Devices Inc./Maxim Integrated	0.08	0.14	0.1	1	50	17	-40 to 125	Active
MCP6281RT-E/OT	Microchip Technology	2.5	5	1	3	450	25	-40 to 125	Active
MCP6281T-E/OT	Microchip Technology	2.5	5	1	3	450	25	-40 to 125	Active
MCP6481T-E/OT	Microchip Technology	2.7	4	1	1.5	240	12	-40 to 125	Active
MCP6491T-E/OT	Microchip Technology	6	7.5	1	1.5	530	15	-40 to 125	Active

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Highest Compatibility):

LMV821M5/NOPB and LMV821M5X/NOPB are pin-for-pin, functionally identical replacements. Both are manufactured by National Semiconductor with Active product status, ensuring long-term availability. These parts maintain identical electrical specifications across all measured parameters and are recommended as primary substitutes for new procurement.

Tier 2 - Enhanced Performance Variants (Compatible with Design Margin):

LMV821AILT and LMV821ILT (STMicroelectronics) provide improved specifications within the LMV821 family. Both offer extended operating temperature range (-40°C to 125°C), lower input offset voltage (0.8 mV for AILT), and higher output current capability (70 mA). These variants are suitable for designs requiring enhanced performance margins or extended temperature operation. Active product status ensures availability.

Tier 3 - Functional Equivalents (Application-Dependent Selection):

MCP6281T-E/OT and MCP6281RT-E/OT (Microchip Technology) provide comparable gain bandwidth product (5 MHz) and slew rate (2.5 V/µs) with extended temperature range. Supply voltage range extends to 6V maximum. These are suitable for applications where the LMV821 family is unavailable.

MCP6491T-E/OT offers the highest slew rate (6 V/µs) and gain bandwidth product (7.5 MHz) among substitutes, suitable for high-speed applications requiring performance beyond the original specification.

Tier 4 - Limited Compatibility (Application-Specific Only):

MAX4400AUK+T and MAX4480AUK+T exhibit significant performance deviations. MAX4400AUK+T has reduced gain bandwidth product (0.8 MHz). MAX4480AUK+T has severely reduced slew rate (0.08 V/µs), gain bandwidth product (0.14 MHz), and output current (17 mA). These are suitable only for low-speed, low-power applications where the original specifications are not required.

All recommended substitutes maintain RoHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q1: Can LMV821M5/NOPB directly replace LMV821M5 without circuit modification?

A: Yes. LMV821M5/NOPB is electrically and mechanically identical to LMV821M5. Pin configuration, package type (SOT-23-5), and all electrical specifications are equivalent. No circuit modification is required.

Q2: What is the difference between LMV821M5X/NOPB and LMV821M5/NOPB?

A: Both parts are functionally identical. The "X" designation indicates a different manufacturing process or date code. Electrical specifications and performance are equivalent. Selection between these variants is based on inventory availability and supplier preference.

Q3: Why are STMicroelectronics LMV821AILT and LMV821ILT listed as substitutes if they have different input offset voltage specifications?

A: LMV821AILT has 0.8 mV input offset voltage, while LMV821ILT has 3.5 mV. Both fall within acceptable substitution parameters. LMV821AILT provides superior offset performance and is preferred for precision applications. LMV821ILT matches the original offset specification exactly. Selection depends on application requirements.

Q4: Can MAX4480AUK+T replace LMV821M5 in all applications?

A: No. MAX4480AUK+T has significantly reduced slew rate (0.08 V/µs vs. 2 V/µs), gain bandwidth product (0.14 MHz vs. 5.6 MHz), and output current (17 mA vs. 45 mA). This part is suitable only for low-speed, low-power applications. High-speed or high-current designs will not function correctly with this substitute.

Q5: What is the operating temperature range difference, and does it affect substitution?

A: LMV821M5 operates -40°C to 85°C. Most substitutes extend to -40°C to 125°C. Extended range substitutes provide additional thermal margin and are suitable for all applications requiring the original temperature range. No design modification is necessary when upgrading to extended-range variants.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard surface mount assembly processes and environmental regulations.

Q7: Which substitute offers the best performance upgrade while maintaining compatibility?

A: MCP6491T-E/OT provides the highest slew rate (6 V/µs) and gain bandwidth product (7.5 MHz) among all substitutes. This part is suitable for applications requiring enhanced speed performance while maintaining SOT-23-5 package compatibility and extended temperature operation.

Q8: Can MCP6281T-E/OT be used in designs originally specified for LMV821M5?

A: Yes, with design verification. MCP6281T-E/OT has comparable slew rate (2.5 V/µs) and gain bandwidth product (5 MHz). Supply voltage range extends to 6V maximum (vs. 5.5V for LMV821M5). Input bias current is higher (1 pA vs. 100 nA). Designs with high-impedance input sources should be verified for bias current compatibility.

Q9: What packaging options are available for substitute parts?

A: All substitute parts are available in SOT-23-5 surface mount package (SC-74A, SOT-753 case). Packaging variants include Cut Tape (CT), Digi-Reel, and Tape & Reel (TR) options. Selection depends on procurement volume and assembly process requirements.

Q10: Is LMV821M5 still available for new designs?

A: No. LMV821M5 is designated Last Time Buy, indicating discontinued production. New designs must select from the active substitute parts listed. LMV821M5/NOPB or LMV821M5X/NOPB are recommended as direct replacements for design continuity.

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