TS941ILT Equivalent & Substitute Parts

Part Overview

The TS941ILT 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 2.5 V to 10 V supply range and is designed for low-power applications requiring minimal input bias current. The part is currently in active product status with 17,170 units in stock.

Substitute parts are necessary when the TS941ILT reaches end-of-life, when alternative packaging formats are required, or when design specifications demand enhanced performance characteristics such as higher slew rate, increased gain bandwidth product, or extended operating temperature ranges.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	0.0045	V/µs
Gain Bandwidth Product	10	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	10	mV
Current - Supply	1.2	µA
Current - Output / Channel	5	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	10	V
Operating Temperature	-40 to 85	°C
Package / Case	SC-74A, SOT-753	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the TS941ILT is determined by the following critical parameters:

Mandatory Compatibility Criteria:

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
Voltage - Supply Span (Min): 2.5 V or lower
Voltage - Supply Span (Max): 10 V or higher
Operating Temperature: Must include -40°C to 85°C range or be compatible with application requirements

Performance Parameters (Application-Dependent):

Slew Rate: 0.0045 V/µs (baseline; higher values acceptable)
Gain Bandwidth Product: 10 kHz (baseline; higher values acceptable)
Current - Input Bias: 1 pA (baseline; lower values acceptable)
Current - Supply: 1.2 µA (baseline; higher values acceptable for non-power-critical applications)
Current - Output / Channel: 5 mA (baseline; higher values acceptable)

All substitute parts listed maintain the same package format, mounting type, and rail-to-rail output configuration. Variations in performance parameters reflect different design approaches within the general-purpose amplifier category.

Parameter Comparison

Parameter	TS941ILT (Main)	LMV641MF/NOPB	LMV641MFE/NOPB	TLV2731CDBVR	TLV2731CDBVT	TLV2731IDBVR	TLV2731IDBVT
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	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
Slew Rate (V/µs)	0.0045	2.6	2.6	1.6	1.6	1.6	1.6
Gain Bandwidth Product	10 kHz	10 MHz	10 MHz	2 MHz	2 MHz	2 MHz	2 MHz
Current - Input Bias	1 pA	70 nA	70 nA	1 pA	1 pA	1 pA	1 pA
Voltage - Input Offset	10 mV	30 µV	30 µV	700 µV	700 µV	700 µV	700 µV
Current - Supply (µA)	1.2	158	158	850	850	850	850
Current - Output / Channel (mA)	5	112	112	50	50	50	50
Voltage - Supply Span (Min)	2.5 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	10 V	12 V	12 V	10 V	10 V	10 V	10 V
Operating Temperature	-40 to 85°C	-40 to 125°C	-40 to 125°C	0 to 70°C	0 to 70°C	-40 to 85°C	-40 to 85°C
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active	Last Time Buy	Last Time Buy	Active	Last Time Buy
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitutes (Active Product Status):

The TLV2731IDBVR and LMV641MF/NOPB are the primary active alternatives to the TS941ILT. Both maintain full compatibility with the mandatory electrical and mechanical parameters. The TLV2731IDBVR operates within the identical temperature range (-40°C to 85°C) and supply voltage window (2.7 V to 10 V). The LMV641MF/NOPB extends the operating temperature range to -40°C to 125°C and supply voltage to 12 V maximum, providing broader application flexibility.

Performance Trade-offs:

The LMV641MF/NOPB and LMV641MFE/NOPB deliver significantly higher slew rate (2.6 V/µs versus 0.0045 V/µs) and gain bandwidth product (10 MHz versus 10 kHz), making them suitable for applications requiring faster signal processing. These parts consume higher supply current (158 µA versus 1.2 µA) and deliver greater output current (112 mA versus 5 mA).

The TLV2731 series (CDBVR, CDBVT, IDBVR, IDBVT) maintains lower supply current consumption (850 µA) and moderate performance characteristics (1.6 V/µs slew rate, 2 MHz gain bandwidth product). The TLV2731CDBVR and TLV2731CDBVT are designated Last Time Buy, indicating limited future availability.

Compliance and Regulatory Status:

All substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level remains constant at MSL 1 (Unlimited) across all options. No regulatory barriers exist for substitution.

Inventory Considerations:

The TS941ILT maintains the highest inventory level (17,170 units). Among substitutes, the TLV2731IDBVR (4,300 units) and LMV641MF/NOPB (9,686 units) offer substantial stock availability. The TLV2731CDBVT (4,450 units) and TLV2731CDBVR (4,200 units) are available but designated Last Time Buy.

Frequently Asked Questions (FAQ)

Q: Can the LMV641MF/NOPB directly replace the TS941ILT in existing designs?

A: The LMV641MF/NOPB is mechanically and electrically compatible with the TS941ILT. Both use the SOT-23-5 package and maintain rail-to-rail output configuration. The LMV641MF/NOPB operates across a wider supply voltage range (2.7 V to 12 V versus 2.5 V to 10 V) and extended temperature range (-40°C to 125°C versus -40°C to 85°C). Performance characteristics differ: the LMV641MF/NOPB exhibits higher slew rate and gain bandwidth product. Circuit validation is necessary to confirm performance compatibility.

Q: What is the primary difference between the TLV2731IDBVR and TLV2731CDBVR?

A: Both parts are identical in electrical specifications and package format. The primary difference is product status: TLV2731IDBVR is Active, while TLV2731CDBVR is Last Time Buy. The TLV2731IDBVR is the recommended choice for new designs requiring long-term availability.

Q: Why does the TS941ILT have a lower slew rate than the LMV641MF/NOPB?

A: The TS941ILT and LMV641MF/NOPB represent different design approaches within the general-purpose amplifier category. The TS941ILT prioritizes ultra-low supply current consumption (1.2 µA) and minimal input bias current (1 pA), making it suitable for battery-powered and precision measurement applications. The LMV641MF/NOPB prioritizes higher bandwidth and output current capability, accepting higher supply current consumption (158 µA) as a trade-off.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All listed substitute parts use the SC-74A, SOT-753 package format (SOT-23-5 supplier designation). All are surface mount components. Packaging differences exist only in tape format: the TS941ILT is available in Cut Tape (CT) and Digi-Reel®, while substitute parts are supplied in Tape & Reel (TR) format.

Q: Which substitute part is recommended for applications requiring extended temperature operation?

A: The LMV641MF/NOPB and LMV641MFE/NOPB support operating temperatures from -40°C to 125°C, extending 40°C above the TS941ILT maximum. The TLV2731IDBVR and TLV2731IDBVT match the TS941ILT temperature range (-40°C to 85°C). The TLV2731CDBVR and TLV2731CDBVT are limited to 0°C to 70°C and are unsuitable for extended temperature applications.

Q: Can the TLV2731CDBVT be used in new production designs?

A: The TLV2731CDBVT is designated Last Time Buy, indicating that Texas Instruments will discontinue this part. While currently available (4,450 units in stock), it is not recommended for new designs. The TLV2731IDBVR (Active status) is the preferred alternative within the TLV2731 family.

Q: What is the significance of the "LinCMOS™" series designation for TLV2731 parts?

A: The LinCMOS™ designation indicates the technology platform used by Texas Instruments for these operational amplifiers. This is a product family identifier and does not affect substitution compatibility. All TLV2731 variants (CDBVR, CDBVT, IDBVR, IDBVT) share identical electrical specifications within their respective temperature grades.

Q: How do input offset voltage specifications compare across substitute options?

A: The TS941ILT specifies 10 mV input offset voltage. The LMV641MF/NOPB and LMV641MFE/NOPB reduce this to 30 µV, providing superior precision. The TLV2731 series specifies 700 µV, which is higher than the TS941ILT. For precision measurement applications requiring low offset voltage, the LMV641 series is preferred.

Q: Are there any REACH or RoHS compliance differences between the TS941ILT and substitute parts?

A: No. All parts listed are ROHS3 compliant and REACH unaffected. Regulatory compliance is uniform across the TS941ILT and all substitute options. No compliance barriers exist for substitution.

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