TSV631ILT Equivalent & Substitute Parts

Part Overview

The TSV631ILT is a general-purpose operational amplifier manufactured by STMicroelectronics, housed in a SOT-23-5 surface mount package. This rail-to-rail output amplifier operates across a supply voltage range of 1.5 V to 5.5 V and is rated for temperatures from -40°C to 125°C. The device is currently in active production status with 3310 units in stock.

Substitute parts are identified when equivalent functional performance can be achieved within the specified electrical and mechanical parameters. Alternatives are necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements permit operation within the broader parameter tolerances of substitute devices.

Key Parameters

Parameter	TSV631ILT Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.34	V/µs
Gain Bandwidth Product	880	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	3	mV
Current - Supply	60	µA
Current - Output / Channel	74	mA
Voltage - Supply Span (Min)	1.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitution of the TSV631ILT is determined by equivalence in the following critical parameters:

Mandatory Equivalence Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Mounting Type: Surface Mount
Package / Case: SC-74A, SOT-753 or compatible SOT-23-5 variants
Supplier Device Package: SOT-23-5 or 5-TSOP

Functional Performance Parameters:

Slew Rate: 0.34 V/µs or greater
Gain Bandwidth Product: 880 kHz or greater
Current - Input Bias: 1 pA or lower
Voltage - Input Offset: 3 mV or lower
Current - Supply: 60 µA or lower
Current - Output / Channel: 74 mA or greater
Voltage - Supply Span (Min): 1.5 V or lower
Voltage - Supply Span (Max): 5.5 V or greater
Operating Temperature: -40°C to 125°C minimum

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Unaffected

Substitute parts listed below meet these criteria within the specified electrical and mechanical tolerances.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (kHz)	Input Bias (pA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
TSV631ILT	STMicroelectronics	0.34	880	1	3	60	74	1.5	5.5	-40 to 125	SOT-23-5	Active
LMV321M5/NOPB	Texas Instruments	1	1000	15	1.7	130	160	2.7	5.5	-40 to 85	SOT-23-5	Active
LMV321M5X/NOPB	Texas Instruments	1	1000	15	1.7	130	—	2.7	5.5	-40 to 85	SOT-23-5	Active
LMV321Q1M5/NOPB	Texas Instruments	1	1000	15	1.7	130	—	2.7	5.5	-40 to 125	SOT-23-5	Active
LMV931MF/NOPB	Texas Instruments	0.42	1500	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Active
LMV931MFX	Texas Instruments	0.42	1500	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Last Time Buy
LMV931MFX/NOPB	Texas Instruments	0.42	1500	14	1	116	100	1.8	5.5	-40 to 125	SOT-23-5	Active
LMV931Q1MF/NOPB	Texas Instruments	0.42	1500	14	1	116	—	1.8	5.5	-40 to 125	SOT-23-5	Active
LMV931SN3T1G	onsemi	0.48	1500	1	1	116	100	1.8	5.5	-40 to 125	5-TSOP	Active
MAX4291EUK+T	Analog Devices Inc./Maxim Integrated	0.2	500	15	0.4	100	—	1.8	5.5	-40 to 85	SOT-23-5	Active
MCP6241UT-E/OT	Microchip Technology	0.3	550	1	5	50	23	1.8	5.5	-40 to 125	SOT-23-5	Active

Engineering Selection Recommendations

Primary Substitutes (Full Parameter Compatibility):

The LMV931MFX/NOPB and LMV931MF/NOPB (Texas Instruments) provide the closest functional equivalence to the TSV631ILT. Both devices operate across the full temperature range of -40°C to 125°C, maintain rail-to-rail output capability, and are housed in SOT-23-5 packages. These parts exceed the TSV631ILT in slew rate (0.42 V/µs vs. 0.34 V/µs) and gain bandwidth product (1.5 MHz vs. 880 kHz), while maintaining lower input offset voltage (1 mV vs. 3 mV). The LMV931MFX/NOPB is currently in active production with 38,100 units in stock.

The LMV931Q1MF/NOPB variant is qualified to AEC-Q100 automotive standards and operates across the full temperature range, making it suitable for applications requiring automotive-grade components.

Secondary Substitutes (Extended Parameter Tolerance):

The LMV321Q1M5/NOPB (Texas Instruments) operates across the full -40°C to 125°C temperature range and is AEC-Q100 qualified. However, this device has a minimum supply voltage of 2.7 V, which exceeds the TSV631ILT specification of 1.5 V. Selection of this part is appropriate only when the application supply voltage remains at or above 2.7 V.

The LMV321M5/NOPB and LMV321M5X/NOPB are limited to -40°C to 85°C operation and have a 2.7 V minimum supply voltage. These parts are suitable for applications with relaxed temperature requirements and higher minimum supply voltages.

Alternative Substitutes (Specific Application Requirements):

The LMV931SN3T1G (onsemi) is packaged in 5-TSOP format rather than standard SOT-23-5, requiring PCB layout modification. This device offers superior input bias current performance (1 pA) and operates across the full temperature range.

The MAX4291EUK+T (Analog Devices Inc./Maxim Integrated) has a reduced gain bandwidth product (500 kHz) and slew rate (0.2 V/µs), limiting its use to applications with lower frequency requirements. Operating temperature is restricted to -40°C to 85°C.

The MCP6241UT-E/OT (Microchip Technology) operates across the full -40°C to 125°C temperature range with lower supply current (50 µA) but reduced output current capability (23 mA vs. 74 mA). This part is suitable for low-power applications where output current demand does not exceed 23 mA.

Compliance Status:

All listed substitute parts maintain RoHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, matching the TSV631ILT regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the LMV931MFX/NOPB directly replace the TSV631ILT without circuit modification?

A: The LMV931MFX/NOPB is pin-compatible in SOT-23-5 packaging and maintains rail-to-rail output operation across the 1.8 V to 5.5 V supply range. However, the TSV631ILT operates at 1.5 V minimum supply voltage, while the LMV931MFX/NOPB requires 1.8 V minimum. Direct substitution is valid only when the application supply voltage is 1.8 V or higher. The LMV931MFX/NOPB exhibits superior performance in slew rate and gain bandwidth product, making it functionally compatible for most general-purpose amplifier applications.

Q: What is the difference between LMV931MFX and LMV931MFX/NOPB?

A: The LMV931MFX/NOPB designation includes the "/NOPB" suffix, indicating "No Plumbum" (lead-free) packaging. Both variants are electrically identical. The LMV931MFX is currently in Last Time Buy status, while LMV931MFX/NOPB is in active production. For new designs, LMV931MFX/NOPB is the recommended selection.

Q: Why does the LMV321Q1M5/NOPB have a higher minimum supply voltage than the TSV631ILT?

A: The LMV321Q1M5/NOPB is designed with a 2.7 V minimum supply voltage specification. This is a fundamental design parameter of the device and cannot be overridden. Applications requiring operation below 2.7 V must use the TSV631ILT or alternative parts with lower minimum supply voltage specifications, such as the LMV931 series.

Q: Is the LMV931SN3T1G package compatible with TSV631ILT PCB layouts?

A: The LMV931SN3T1G is packaged in 5-TSOP format, while the TSV631ILT uses SOT-23-5 (SC-74A, SOT-753). Although both are five-pin packages, the pin pitch and physical dimensions differ. PCB footprint modification is required for substitution. Consult the respective datasheets for detailed package dimensions before layout changes.

Q: Can the MCP6241UT-E/OT be used in applications requiring 74 mA output current?

A: The MCP6241UT-E/OT has a maximum output current of 23 mA per channel, which is insufficient for applications requiring the 74 mA output current capability of the TSV631ILT. This part is suitable only for applications where output current demand does not exceed 23 mA. For higher output current requirements, select the LMV931 series or other alternatives with adequate output current specifications.

Q: What is the significance of AEC-Q100 qualification on the LMV931Q1MF/NOPB and LMV321Q1M5/NOPB?

A: AEC-Q100 qualification indicates that the device meets automotive industry reliability and quality standards established by the Automotive Electronics Council. These parts are suitable for automotive applications and environments requiring enhanced reliability testing. Non-automotive applications do not require AEC-Q100 qualification, but these parts remain fully functional in general-purpose applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the TSV631ILT. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no moisture sensitivity precautions are required during storage or handling.

Q: Which substitute part offers the best low-power performance?

A: The MCP6241UT-E/OT has the lowest supply current at 50 µA, compared to 60 µA for the TSV631ILT. However, this advantage is offset by reduced output current capability (23 mA). For applications prioritizing low supply current with adequate output current, the LMV931 series offers 116 µA supply current with 100 mA output current, providing a balanced performance profile.

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