TSV6391ICT Equivalent & Substitute Parts

Part Overview

The TSV6391ICT is a general-purpose operational amplifier manufactured by STMicroelectronics, housed in a 5-TSSOP (SC-70-5) surface-mount package. This device features rail-to-rail output capability and is designed for low-power analog signal processing applications. The TSV6391ICT is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production continuity. Substitute parts must maintain functional compatibility across critical electrical parameters while accommodating the same physical package footprint.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	5-TSSOP, SC-70-5, SOT-353	—
Mounting Type	Surface Mount	—
Slew Rate	1.1	V/µs
Gain Bandwidth Product	2.4	MHz
Voltage - Supply Span (Min)	1.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Current - Supply	60	µA
Current - Output / Channel	72	mA
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TSV6391ICT is determined by strict adherence to the following critical parameters:

Package Compatibility: All substitute parts must use the 5-TSSOP (SC-70-5, SOT-353) surface-mount package to ensure PCB footprint compatibility without redesign.

Functional Classification: Substitute parts must be general-purpose operational amplifiers with single-circuit configuration and rail-to-rail output capability.

Electrical Operating Range: Substitute parts must support the supply voltage span of 1.5 V to 5.5 V minimum. Parts with narrower supply ranges (such as 1.8 V to 5 V) operate within the TSV6391ICT envelope but with reduced flexibility at lower supply voltages.

Temperature Range: The TSV6391ICT operates from -40°C to 125°C. Substitute parts meeting this full range provide direct replacement capability. Parts with narrower ranges (such as -40°C to 85°C) are restricted to applications not requiring the extended upper temperature limit.

Performance Parameters: Slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current are secondary selection criteria. Substitutes with lower performance in these areas may be acceptable for applications with relaxed performance requirements. Substitutes with higher performance provide enhanced capability.

Compliance & Status: All substitute parts must maintain ROHS3 compliance and MSL 1 rating. Product status (Active, Last Time Buy, or Obsolete) indicates availability and long-term supply viability.

Parameter Comparison

Parameter	TSV6391ICT	TSV6391AICT	LMV301MG/NOPB	LMV301MGX/NOPB	LMV611MG/NOPB	LMV611MGX/NOPB	LMV931MG	LMV931MG/NOPB	LMV931MGX/NOPB	MCP6231UT-E/LT	OPA333AMDCKREP
Manufacturer	STMicroelectronics	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	Zero-Drift
Number of Circuits	1	1	1	1	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	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353	5-TSSOP, SC-70-5, SOT-353
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate (V/µs)	1.1	1.1	0.66	0.66	0.42	0.42	0.42	0.42	0.42	0.15	0.16
Gain Bandwidth Product (MHz)	2.4	2.4	1	1	1.5	1.5	1.5	1.5	1.5	0.3	0.35
Current - Input Bias (pA)	1	1	0.182	0.182	14000	14000	14000	14000	14000	1	70
Voltage - Input Offset (mV)	3	0.5	0.9	0.9	1	1	1	1	1	5	0.002
Current - Supply (µA)	60	60	163	163	116	116	116	116	116	20	17
Current - Output / Channel (mA)	72	72	108	108	100	100	100	100	100	23	5
Voltage - Supply Span (Min) (V)	1.5	1.5	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8	1.8
Voltage - Supply Span (Max) (V)	5.5	5.5	5	5	5.5	5.5	5.5	5.5	5.5	6	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-55 to 125
Product Status	Obsolete	Active	Active	Active	Active	Active	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: TSV6391AICT

The TSV6391AICT is the direct successor to the TSV6391ICT, manufactured by STMicroelectronics. This part maintains identical electrical specifications (1.1 V/µs slew rate, 2.4 MHz gain bandwidth product, 1.5 V to 5.5 V supply range, -40°C to 125°C operating temperature) and identical package footprint. The TSV6391AICT is classified as Active, ensuring long-term availability and supply continuity. The primary difference is improved input offset voltage (500 µV versus 3 mV), providing enhanced precision. This part is the preferred direct replacement for the obsolete TSV6391ICT.

Secondary Recommendations: LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG/NOPB, LMV931MGX/NOPB

These Texas Instruments parts provide functional substitution with identical package footprint and full operating temperature range (-40°C to 125°C). All four parts share identical electrical characteristics: 0.42 V/µs slew rate, 1.5 MHz gain bandwidth product, 1.8 V to 5.5 V supply range, and 100 mA output current. These parts are classified as Active (LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG/NOPB, LMV931MGX/NOPB) or Last Time Buy (LMV931MG), ensuring availability. The trade-off is reduced slew rate and gain bandwidth product compared to the TSV6391ICT, suitable for applications with relaxed bandwidth requirements.

Tertiary Recommendations: LMV301MG/NOPB, LMV301MGX/NOPB

These Texas Instruments parts provide functional substitution with identical package footprint. Both parts are classified as Active. The operating temperature range is restricted to -40°C to 85°C, limiting use in applications requiring the full -40°C to 125°C range. The supply voltage range is 1.8 V to 5 V, reducing flexibility at lower supply voltages. Slew rate is 0.66 V/µs and gain bandwidth product is 1 MHz, both lower than the TSV6391ICT. These parts are suitable for room-temperature and moderately elevated-temperature applications with lower bandwidth requirements.

Alternative Recommendation: MCP6231UT-E/LT

The MCP6231UT-E/LT from Microchip Technology provides functional substitution with identical package footprint and full operating temperature range (-40°C to 125°C). This part is classified as Active. The supply voltage range extends to 6 V maximum, exceeding the TSV6391ICT specification. However, performance is significantly reduced: slew rate is 0.15 V/µs, gain bandwidth product is 300 kHz, and output current is 23 mA. This part is suitable only for low-bandwidth, low-speed applications where power consumption is critical (20 µA supply current).

Specialized Alternative: OPA333AMDCKREP

The OPA333AMDCKREP from Texas Instruments is a zero-drift amplifier providing functional substitution with identical package footprint. This part is classified as Active and supports an extended operating temperature range of -55°C to 125°C. The supply voltage range is 1.8 V to 5.5 V. Performance characteristics differ significantly: slew rate is 0.16 V/µs, gain bandwidth product is 350 kHz, and output current is 5 mA. The defining characteristic is extremely low input offset voltage (2 µV), suitable for precision measurement applications. This part is not a general-purpose replacement but rather a specialized alternative for applications requiring offset voltage minimization.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TSV6391ICT with TSV6391AICT without PCB modifications?

A: Yes. The TSV6391AICT maintains identical package footprint (5-TSSOP, SC-70-5, SOT-353), pin configuration, and electrical operating specifications. No PCB redesign is required. The TSV6391AICT is the recommended direct replacement.

Q: What is the key difference between TSV6391ICT and TSV6391AICT?

A: Both parts share identical electrical performance specifications. The primary difference is input offset voltage: TSV6391ICT specifies 3 mV maximum, while TSV6391AICT specifies 500 µV maximum. Additionally, TSV6391AICT is classified as Active (current production), while TSV6391ICT is Obsolete (end-of-life).

Q: Can I use LMV301MG/NOPB in applications requiring -40°C to 125°C operation?

A: No. The LMV301MG/NOPB operating temperature range is -40°C to 85°C only. Applications requiring operation above 85°C must use alternative parts such as TSV6391AICT, LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG/NOPB, LMV931MGX/NOPB, MCP6231UT-E/LT, or OPA333AMDCKREP.

Q: What is the minimum supply voltage for LMV301MG/NOPB and LMV301MGX/NOPB?

A: The minimum supply voltage is 1.8 V. The TSV6391ICT supports 1.5 V minimum. Applications requiring operation below 1.8 V must use TSV6391AICT, LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG/NOPB, LMV931MGX/NOPB, or OPA333AMDCKREP, all of which support 1.5 V or 1.8 V minimum.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the TSV6391ICT compliance profile.

Q: Which substitute part has the highest slew rate?

A: The TSV6391AICT maintains the highest slew rate at 1.1 V/µs, identical to the original TSV6391ICT. All other substitutes have lower slew rates: LMV301MG/NOPB and LMV301MGX/NOPB at 0.66 V/µs; LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG, LMV931MG/NOPB, and LMV931MGX/NOPB at 0.42 V/µs; MCP6231UT-E/LT at 0.15 V/µs; and OPA333AMDCKREP at 0.16 V/µs.

Q: Which substitute part has the lowest supply current?

A: The OPA333AMDCKREP has the lowest supply current at 17 µA, followed by MCP6231UT-E/LT at 20 µA. The TSV6391ICT and TSV6391AICT both draw 60 µA. For general-purpose applications not requiring ultra-low power, TSV6391AICT is preferred.

Q: Can I use MCP6231UT-E/LT as a direct replacement for high-speed applications?

A: No. The MCP6231UT-E/LT has significantly reduced performance: slew rate of 0.15 V/µs (versus 1.1 V/µs for TSV6391ICT) and gain bandwidth product of 300 kHz (versus 2.4 MHz). This part is suitable only for low-bandwidth applications. For high-speed applications, use TSV6391AICT or LMV611MG/NOPB.

Q: What is the difference between LMV611MG/NOPB and LMV611MGX/NOPB?

A: Both parts have identical electrical specifications and operating characteristics. The difference is in packaging: LMV611MG/NOPB is supplied in Tape & Reel (TR) format, while LMV611MGX/NOPB is also supplied in Tape & Reel (TR) format. Both are classified as Active and suitable for production use.

Q: Is OPA333AMDCKREP suitable for general-purpose amplifier applications?

A: The OPA333AMDCKREP is a specialized zero-drift amplifier designed for precision measurement applications requiring extremely low input offset voltage (2 µV). While it functions as a general-purpose amplifier, its reduced bandwidth (350 kHz) and output current (5 mA) make it unsuitable for general-purpose applications. Use TSV6391AICT or LMV611MG/NOPB for general-purpose requirements.

Q: Which substitute parts are classified as Active for long-term availability?

A: The following parts are classified as Active: TSV6391AICT, LMV301MG/NOPB, LMV301MGX/NOPB, LMV611MG/NOPB, LMV611MGX/NOPB, LMV931MG/NOPB, LMV931MGX/NOPB, MCP6231UT-E/LT, and OPA333AMDCKREP. The LMV931MG is classified as Last Time Buy, indicating limited future availability.

Q: Can I use substitute parts with lower gain bandwidth product in my existing design?

A: Substitution with lower gain bandwidth product is application-dependent. If your design operates at frequencies below the substitute part's gain bandwidth product, substitution is acceptable. If your design requires the full 2.4 MHz bandwidth of the TSV6391ICT, use TSV6391AICT (2.4 MHz) or LMV611MG/NOPB (1.5 MHz). Parts with 1 MHz or lower bandwidth are unsuitable for high-frequency applications.

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