LMV796MFX Equivalent & Substitute Parts

Part Overview

The LMV796MFX 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 and is designed for low-voltage applications requiring single-circuit amplification. The LMV796MFX carries an obsolete product status, necessitating identification of functionally equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain compatibility across electrical performance parameters, mechanical packaging, and supply voltage specifications to ensure direct replacement capability.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Slew Rate	11.5	V/µs
Gain Bandwidth Product	17	MHz
Current - Input Bias	0.1	pA
Voltage - Input Offset	100	µV
Current - Supply	1.15	mA
Current - Output / Channel	60	mA

Substitute Part Grouping Explanation

Substitution eligibility for the LMV796MFX is determined by strict adherence to the following criteria:

Primary Compatibility Requirements:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Package / Case: SC-74A, SOT-753 (SOT-23-5)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C to 125°C minimum
Voltage Supply Span: Minimum 1.8V to 5.5V maximum

Secondary Performance Parameters: Substitute parts must operate within the specified voltage supply range. Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current are performance characteristics that may vary between substitutes while maintaining functional equivalence for general-purpose amplification applications.

Compliance and Status: Active product status and RoHS3 compliance are preferred for new designs. The LMV796MFX/NOPB variant provides direct equivalence with improved compliance status. Microchip Technology MCP series devices (MCP6291T-E/OT, MCP6291RT-E/OT, MCP6L91T-E/OT, MCP6L91RT-E/OT) and onsemi NCS2003ASN2T1G provide functionally compatible alternatives. STMicroelectronics TSV991AILT offers additional performance characteristics within the substitution envelope.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage Supply (Min-Max)	Operating Temp (°C)	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Package	RoHS Status
LMV796MFX	Texas Instruments	Obsolete	1.8–5.5	-40 to 125	11.5	17	0.1	100	1.15	60	SOT-23-5	Non-compliant
LMV796MFX/NOPB	Texas Instruments	Active	1.8–5.5	-40 to 125	11.5	17	0.1	100	1.15	60	SOT-23-5	RoHS3 Compliant
MCP6291T-E/OT	Microchip Technology	Active	2.4–6.0	-40 to 125	7	10	1	3000	1.0	25	SOT-23-5	RoHS3 Compliant
MCP6291RT-E/OT	Microchip Technology	Active	2.4–6.0	-40 to 125	7	10	1	3000	1.0	25	SOT-23-5	RoHS3 Compliant
MCP6L91T-E/OT	Microchip Technology	Active	2.4–6.0	-40 to 125	7	10	1	1000	0.85	—	SOT-23-5	RoHS3 Compliant
MCP6L91RT-E/OT	Microchip Technology	Active	2.4–6.0	-40 to 125	7	10	1	1000	0.85	—	SOT-23-5	RoHS3 Compliant
NCS2003ASN2T1G	onsemi	Active	1.7–5.5	-40 to 85	12.5	7	1	500	0.3	96	SOT-23-5	RoHS3 Compliant
TSV991AILT	STMicroelectronics	Active	2.5–5.5	-40 to 125	10	20	1	—	0.82	35	SOT-23-5	RoHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Highest Compatibility): The LMV796MFX/NOPB is the primary substitute for the obsolete LMV796MFX. This part maintains identical electrical specifications while providing active product status and RoHS3 compliance. Inventory availability is significantly higher (28,295 units), ensuring supply chain continuity. This variant is suitable for direct substitution in existing designs without circuit modification.

Active Alternatives (Functional Equivalence): Microchip Technology MCP6291T-E/OT and MCP6291RT-E/OT provide functional equivalence with active product status and RoHS3 compliance. These devices operate within the required voltage supply range (2.4–6.0V) and maintain the -40°C to 125°C operating temperature specification. The MCP6L91T-E/OT and MCP6L91RT-E/OT variants offer reduced supply current (850µA) and improved input offset voltage (1mV), beneficial for power-constrained applications. Packaging remains SOT-23-5 compatible.

Extended Range Alternatives: The onsemi NCS2003ASN2T1G operates at lower minimum supply voltage (1.7V) and provides enhanced slew rate (12.5V/µs) and output current (96mA). Operating temperature range is limited to -40°C to 85°C. This device is suitable for applications requiring extended low-voltage operation.

Performance-Enhanced Alternative: The STMicroelectronics TSV991AILT delivers higher gain bandwidth product (20MHz) and maintains full -40°C to 125°C temperature range. Minimum supply voltage is 2.5V. This device is appropriate for applications requiring increased bandwidth performance.

Compliance Considerations: All recommended substitutes carry RoHS3 compliance and REACH unaffected status. The original LMV796MFX is RoHS non-compliant; migration to compliant alternatives is required for new designs and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can the LMV796MFX be directly replaced with LMV796MFX/NOPB? A: Yes. The LMV796MFX/NOPB is electrically and mechanically identical to the LMV796MFX, with the primary difference being active product status and RoHS3 compliance. No circuit modifications are required.

Q: What is the primary reason for substituting the LMV796MFX? A: The LMV796MFX carries obsolete product status. The LMV796MFX/NOPB provides identical performance with active availability and improved compliance status.

Q: Are Microchip MCP6291 and MCP6L91 devices pin-compatible with the LMV796MFX? A: Yes. All devices share the SOT-23-5 package configuration (SC-74A, SOT-753). Pin assignments are compatible for general-purpose amplifier applications.

Q: What are the key electrical differences between LMV796MFX and MCP6291T-E/OT? A: The MCP6291T-E/OT operates at a higher minimum supply voltage (2.4V versus 1.8V), exhibits lower slew rate (7V/µs versus 11.5V/µs), and reduced gain bandwidth product (10MHz versus 17MHz). Input offset voltage is higher (3mV versus 100µV). Supply current is lower (1.0mA versus 1.15mA), and output current is reduced (25mA versus 60mA).

Q: Is the onsemi NCS2003ASN2T1G suitable for -40°C to 125°C applications? A: No. The NCS2003ASN2T1G operating temperature range is -40°C to 85°C. For full -40°C to 125°C range, use LMV796MFX/NOPB, MCP6291 series, MCP6L91 series, or TSV991AILT.

Q: Which substitute offers the lowest supply current? A: The onsemi NCS2003ASN2T1G provides the lowest supply current at 300µA. The MCP6L91 series offers 850µA, suitable for power-sensitive applications requiring extended temperature range.

Q: Can substitutes be used interchangeably in existing PCB designs? A: Yes, provided the circuit design accommodates the electrical parameter variations listed in the Parameter Comparison table. Verify that minimum supply voltage requirements, slew rate, and output current specifications align with application requirements before implementation.

Q: What packaging options are available for substitute parts? A: All substitute parts are available in SOT-23-5 surface mount packaging. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® options are available depending on the specific part number and manufacturer.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All recommended substitute parts carry RoHS3 compliance certification. The original LMV796MFX is RoHS non-compliant.

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