TS271CD Equivalent & Substitute Parts

Part Overview

The TS271CD is a general-purpose operational amplifier manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TS271CD operates across a supply voltage range of 3V to 16V and is suitable for applications requiring low-power general-purpose amplification in the 0°C to 70°C operating temperature range.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TS271CD	—
Manufacturer	STMicroelectronics	—
Category	Linear, Amplifiers	—
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.1	mV
Current - Supply	10	µA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0°C ~ 70°C	—
RoHS Status	ROHS3 Compliant	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the TS271CD is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB compatibility without layout modifications.

Electrical Operating Range: Substitute parts must support the minimum supply voltage of 3V and maximum supply voltage of 16V to function within the original circuit design envelope.

Amplifier Classification: All substitutes must be general-purpose operational amplifiers with a single circuit configuration to maintain functional equivalence.

Temperature Operating Range: Substitutes operating within 0°C to 70°C are directly compatible. Parts with extended temperature ranges (-40°C to 85°C) are also acceptable as they encompass the original operating window.

Compliance Standards: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to meet regulatory requirements equivalent to the original part.

The substitute parts are grouped into two categories based on electrical performance characteristics:

Group 1 (TLC251 Series): TLC251ACD, TLC251CD, and TLC251CDG4 offer enhanced slew rate (5.3V/µs) and gain bandwidth product (2.2 MHz) compared to the TS271CD, with lower input bias current (0.7 pA) and reduced supply current (950µA). These parts support minimum supply voltage of 1.4V, providing greater flexibility in low-voltage applications.

Group 2 (TLC2654 Series): TLC2654AC-8D, TLC2654I-8D, and TLC2654I-8DR provide intermediate performance with slew rate of 3.7V/µs and gain bandwidth product of 1.9 MHz. These parts feature significantly lower input offset voltage (4-5 µV) and higher input bias current (50 pA), with minimum supply voltage of 4.6V.

Group 3 (TLC271CD): TLC271CD offers performance characteristics closely aligned with the TLC251 series, with identical slew rate (5.3V/µs) and gain bandwidth product (2.2 MHz), while maintaining the original 3V minimum supply voltage specification.

Parameter Comparison

Parameter	TS271CD	TLC251ACD	TLC251CD	TLC251CDG4	TLC2654AC-8D	TLC2654I-8D	TLC2654I-8DR	TLC271CD
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1
Slew Rate (V/µs)	0.04	5.3	5.3	5.3	3.7	3.7	3.7	5.3
Gain Bandwidth Product (kHz)	100	2200	2200	2200	1900	1900	1900	2200
Current - Input Bias (pA)	1	0.7	0.7	0.7	50	50	50	0.7
Voltage - Input Offset (mV)	1.1	0.9	1.1	1.1	0.004	0.005	0.005	1.1
Current - Supply (µA)	10	950	950	950	1500	1500	1500	950
Current - Output / Channel (mA)	45	—	—	—	50	50	50	30
Voltage - Supply Span (Min)	3 V	1.4 V	1.4 V	1.4 V	4.6 V	4.6 V	4.6 V	3 V
Voltage - Supply Span (Max)	16 V	16 V	16 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Last Time Buy	Last Time Buy	Discontinued at DiGi Electronics	Active	Last Time Buy	Active	Last Time Buy

Engineering Selection Recommendations

For Direct Replacement with Minimum Circuit Modification:

TLC271CD is the preferred substitute when the original 3V minimum supply voltage specification must be maintained. This part provides identical slew rate (5.3V/µs) and gain bandwidth product (2.2 MHz) to the TLC251 series while preserving the 3V minimum supply voltage of the TS271CD. TLC271CD is currently in Last Time Buy status, indicating limited future availability.

For Active Production with Enhanced Performance:

TLC2654I-8DR is the recommended substitute for new designs requiring active product status and extended temperature range (-40°C to 85°C). This part is available in Tape & Reel packaging suitable for automated assembly. The TLC2654I-8DR operates within the 4.6V to 16V supply range and provides superior input offset voltage performance (5 µV) compared to the TS271CD (1.1 mV). Designs operating at supply voltages below 4.6V are not compatible with this substitute.

For Low-Voltage Applications:

TLC251CD or TLC251ACD are suitable for applications requiring operation at supply voltages below 4.6V, as both support minimum supply voltage of 1.4V. TLC251ACD offers the lowest input offset voltage (900 µV) among the TLC251 variants. Both parts are in Last Time Buy status.

Compliance and Regulatory Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting the regulatory requirements of the original TS271CD. The 8-SOIC package is consistent across all substitutes, eliminating the need for PCB layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the TS271CD be directly replaced with any of the listed substitute parts without circuit modifications?

A: Direct replacement is possible only when the circuit supply voltage range is compatible. TLC271CD and TLC251 series parts (TLC251ACD, TLC251CD, TLC251CDG4) support the original 3V minimum supply voltage. TLC2654 series parts require minimum supply voltage of 4.6V and are not compatible with circuits designed for 3V operation. All substitutes use the identical 8-SOIC package, requiring no PCB layout changes.

Q: What are the key performance differences between the TS271CD and its substitutes?

A: The TS271CD operates at 0.04V/µs slew rate with 100 kHz gain bandwidth product. TLC251 and TLC271 series substitutes provide significantly higher performance with 5.3V/µs slew rate and 2.2 MHz gain bandwidth product. TLC2654 series substitutes offer intermediate performance (3.7V/µs slew rate, 1.9 MHz gain bandwidth product) but feature substantially lower input offset voltage (4-5 µV versus 1.1 mV). Supply current consumption increases from 10µA in the TS271CD to 950µA in TLC251/TLC271 series and 1.5mA in TLC2654 series.

Q: Which substitute part is recommended for new production designs?

A: TLC2654I-8DR is the only substitute with Active product status, ensuring long-term availability for production. This part is available in Tape & Reel packaging for automated assembly. The minimum supply voltage requirement of 4.6V must be verified against circuit design specifications before selection.

Q: Are there temperature range limitations when substituting the TS271CD?

A: The TS271CD operates from 0°C to 70°C. TLC251 and TLC271 series substitutes maintain this identical temperature range. TLC2654I-8D and TLC2654I-8DR extend the operating range to -40°C to 85°C, providing additional flexibility for applications requiring extended temperature operation. TLC2654AC-8D maintains the 0°C to 70°C range.

Q: What is the impact of increased supply current consumption in substitute parts?

A: The TS271CD draws 10µA supply current, while TLC251/TLC271 series substitutes draw 950µA and TLC2654 series draw 1.5mA. This 95-150 fold increase in supply current consumption affects power dissipation and thermal management in battery-powered or power-constrained applications. Circuit design must account for this increased current draw when selecting substitutes.

Q: Can TLC2654 series parts be used in circuits designed for the TS271CD?

A: TLC2654 series substitution requires verification of two critical parameters: (1) circuit supply voltage must be 4.6V or higher, and (2) the application must tolerate the increased supply current (1.5mA versus 10µA). The superior input offset voltage performance (4-5 µV) of TLC2654 series may benefit precision applications. Output current capability is slightly higher (50 mA versus 45 mA).

Q: What packaging options are available for substitute parts?

A: TLC251ACD, TLC251CD, TLC2654AC-8D, and TLC2654I-8D are supplied in Tube packaging. TLC251CDG4 and TLC271CD do not specify packaging format. TLC2654I-8DR is supplied in Tape & Reel (TR) packaging, suitable for automated pick-and-place assembly. All parts use the 8-SOIC surface mount package.

Q: Are there any product status considerations when selecting substitutes?

A: TLC2654I-8DR is the only substitute with Active product status, ensuring continued availability. TLC251ACD, TLC251CD, TLC2654I-8D, and TLC271CD are in Last Time Buy status, indicating limited future availability. TLC251CDG4 is Discontinued at DiGi Electronics. For long-term production continuity, TLC2654I-8DR is the only recommended choice.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message