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TS271ID Equivalent & Substitute Parts
Part Overview
The TS271ID 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 TS271ID operates across a supply voltage range of 3V to 16V with a slew rate of 0.04V/µs and gain bandwidth product of 100 kHz, serving applications requiring low-speed amplification in compact form factors.
Substiute Parts
Key Parameters
| Parameter | TS271ID Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 1 | — |
| 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 | -40 to 125 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TS271ID is determined by compatibility across the following critical parameters: package type (8-SOIC surface mount), single-circuit general-purpose amplifier configuration, supply voltage range overlap, and operating temperature requirements. Substitute parts must maintain the same physical footprint and pinout to ensure direct board-level replacement without layout modifications.
The substitute parts are grouped into two categories based on electrical performance characteristics:
Category 1: Lower Performance Substitutes (TLC251 Series) These parts maintain similar or lower slew rates and gain bandwidth products compared to the TS271ID. They are suitable for applications where the TS271ID's performance envelope is not exceeded.
Category 2: Higher Performance Substitutes (TLC2654 Series) These parts provide enhanced slew rate and gain bandwidth product specifications, offering improved performance margins for demanding applications.
Key parameters determining substitution eligibility:
- Package compatibility: 8-SOIC form factor
- Supply voltage range: Minimum 3V to 16V overlap
- Operating temperature: Coverage of required application range
- Output current capability: Minimum 30 mA per channel
- Input bias current and offset voltage: Within acceptable application tolerances
Parameter Comparison
| Parameter | TS271ID | TLC251ACD | TLC251CD | TLC251CDG4 | TLC2654AC-8D | TLC2654I-8D | TLC2654I-8DR | TLC271ID | Unit |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Texas Instruments | 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 | General Purpose | — |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — |
| Slew Rate | 0.04 | 5.3 | 5.3 | 5.3 | 3.7 | 3.7 | 3.7 | 5.3 | V/µs |
| Gain Bandwidth Product | 100 | 2200 | 2200 | 2200 | 1900 | 1900 | 1900 | 2200 | kHz |
| Current - Input Bias | 1 | 0.7 | 0.7 | 0.7 | 50 | 50 | 50 | 0.7 | pA |
| Voltage - Input Offset | 1.1 | 0.9 | 1.1 | 1.1 | 0.004 | 0.005 | 0.005 | 1.1 | mV |
| Current - Supply | 10 | 950 | 950 | 950 | 1500 | 1500 | 1500 | 950 | µA |
| Current - Output / Channel | 45 | — | — | — | 50 | 50 | 50 | 30 | mA |
| Voltage - Supply Span (Min) | 3 | 1.4 | 1.4 | 1.4 | 4.6 | 4.6 | 4.6 | 4 | V |
| Voltage - Supply Span (Max) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | V |
| Operating Temperature | -40 to 125 | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | -40 to 85 | -40 to 85 | -40 to 85 | °C |
| 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 | — |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — |
| Product Status | Obsolete | Last Time Buy | Last Time Buy | Discontinued at DiGi Electronics | Active | Last Time Buy | Active | Last Time Buy | — |
Engineering Selection Recommendations
Primary Recommendation: TLC2654I-8DR
The TLC2654I-8DR is the preferred substitute for the TS271ID. This part is classified as Active, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging suitable for automated assembly processes. The TLC2654I-8DR maintains the required 8-SOIC package footprint and supports the extended operating temperature range of -40°C to 85°C, which covers the TS271ID's lower temperature bound. Output current capability of 50 mA exceeds the TS271ID specification of 45 mA. The supply voltage range of 4.6V to 16V overlaps with the TS271ID's 3V to 16V range for applications operating above 4.6V. Both devices are ROHS3 compliant with MSL 1 rating.
Secondary Recommendation: TLC271ID
The TLC271ID serves as an alternative substitute with Active status designation and extended temperature range coverage (-40°C to 85°C). This part maintains compatibility with the TS271ID's supply voltage requirements (4V to 16V minimum). The TLC271ID provides 30 mA output current per channel, which is below the TS271ID specification but sufficient for lower-current applications. This part is available in Tube packaging.
Tertiary Options: TLC251 Series (TLC251ACD, TLC251CD, TLC251CDG4)
The TLC251 series parts provide higher slew rate (5.3V/µs) and gain bandwidth product (2.2 MHz) compared to the TS271ID. These parts are suitable for applications requiring improved dynamic performance. However, the TLC251ACD and TLC251CD are classified as Last Time Buy, and TLC251CDG4 is Discontinued at DiGi Electronics, limiting their suitability for new designs. Operating temperature range for these parts is restricted to 0°C to 70°C, which does not cover the TS271ID's full -40°C to 125°C range.
Not Recommended: TLC2654AC-8D
The TLC2654AC-8D is classified as Active but operates only across 0°C to 70°C, failing to meet the TS271ID's extended low-temperature requirement of -40°C.
Frequently Asked Questions (FAQ)
Q: Can the TLC2654I-8DR directly replace the TS271ID on existing PCBs?
A: Yes. Both devices use the 8-SOIC package with identical pinout and footprint. No PCB layout modifications are required for direct substitution. Electrical parameter differences must be evaluated for the specific application circuit.
Q: What is the primary limitation when substituting TLC251 series parts for the TS271ID?
A: The TLC251 series operates only across 0°C to 70°C, whereas the TS271ID supports -40°C to 125°C. Applications requiring operation below 0°C or above 70°C cannot use TLC251 substitutes. Additionally, TLC251 parts are classified as Last Time Buy or Discontinued, limiting availability for new production.
Q: Why does the TLC2654I-8D have a higher supply current (1.5 mA) than the TS271ID (10 µA)?
A: The TLC2654I-8D is a higher-performance device with enhanced slew rate and gain bandwidth product specifications. Increased quiescent current is a characteristic trade-off in achieving superior dynamic performance. Applications with strict power budget constraints should evaluate this parameter against performance requirements.
Q: Is the TLC2654I-8DR suitable for applications requiring the full -40°C to 125°C temperature range of the TS271ID?
A: The TLC2654I-8DR operates across -40°C to 85°C, covering the TS271ID's lower temperature extreme but not its upper limit of 125°C. Applications requiring operation above 85°C cannot use this substitute.
Q: What is the difference between TLC2654I-8D and TLC2654I-8DR?
A: Both parts are electrically identical. The primary difference is packaging: TLC2654I-8D is supplied in Tube packaging, while TLC2654I-8DR is supplied in Tape & Reel format. Tape & Reel packaging is standard for automated assembly processes.
Q: Can I use the TLC271ID as a substitute if the TS271ID is unavailable?
A: Yes, the TLC271ID is compatible for applications operating within its supply voltage range of 4V to 16V and temperature range of -40°C to 85°C. The TLC271ID provides lower output current (30 mA versus 45 mA), which may be limiting for high-current applications. The TLC271ID is classified as Last Time Buy, so long-term availability should be confirmed.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the TS271ID's environmental compliance profile.
Q: What is the minimum supply voltage for each substitute part?
A: TLC251 series parts operate from 1.4V minimum. TLC2654 series parts require 4.6V minimum. TLC271ID requires 4V minimum. The TS271ID operates from 3V minimum. Applications with supply voltages between 3V and 4V cannot use TLC2654 or TLC271ID substitutes.
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