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TLC27M7CD Equivalent & Substitute Parts
Part Overview
The TLC27M7CD is a CMOS dual-channel operational amplifier manufactured by Texas Instruments in the LinCMOS™ series. This device integrates two independent amplifier circuits in an 8-SOIC surface mount package and operates across a 3V to 16V supply voltage range with a temperature range of 0°C to 70°C. The part is designated as Last Time Buy status, indicating limited availability from the original manufacturer. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring CMOS amplifier functionality with these electrical characteristics.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.62 | V/µs |
| Gain Bandwidth Product | 635 | kHz |
| Current - Input Bias | 0.7 | pA |
| Voltage - Input Offset | 190 | µV |
| Current - Supply (x2 Channels) | 285 | µA |
| Current - Output / Channel | 30 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | 0 to 70 | °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 TLC27M7CD is determined by strict electrical and mechanical compatibility across the following critical parameters:
Primary Substitution Criteria:
- Amplifier Type: CMOS technology
- Number of Circuits: Dual-channel (2 circuits)
- Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
- Mounting Type: Surface Mount
- Supply Voltage Range: Minimum 3V, Maximum 16V
- Operating Temperature Range: 0°C to 70°C or extended range
- Output Current per Channel: 30 mA or greater
- RoHS3 Compliance and MSL Level 1
Secondary Electrical Parameters for Compatibility Assessment:
- Slew Rate: 0.62 V/µs or higher
- Gain Bandwidth Product: 635 kHz or higher
- Input Bias Current: 0.7 pA or lower
- Input Offset Voltage: 190 µV or lower
- Supply Current: 285 µA (x2 Channels) or lower
Substitute parts must maintain compatibility across all primary criteria. Secondary electrical parameters may vary within acceptable ranges depending on application requirements, but higher performance specifications (faster slew rate, higher bandwidth, lower bias current) indicate enhanced capability.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (kHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Temp Range (°C) | Status | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TLC27M7CD | Texas Instruments | CMOS | 0.62 | 635 | 0.7 | 190 | 285 | 30 | 0 to 70 | Last Time Buy | Tube |
| TLC27M7CDR | Texas Instruments | CMOS | 0.62 | 635 | 0.7 | 190 | 285 | 30 | 0 to 70 | Active | Cut Tape |
| TS272ACDT | STMicroelectronics | CMOS | 5.5 | 3500 | 1 | 900 | 1000 | 45 | 0 to 70 | Active | Cut Tape |
| TS272AIDT | STMicroelectronics | CMOS | 5.5 | 3500 | 1 | 900 | 1000 | 45 | -40 to 125 | Active | Cut Tape |
| TS272BIDT | STMicroelectronics | CMOS | 5.5 | 3500 | 1 | 250 | 1000 | 45 | -40 to 125 | Active | Tape & Reel |
| TS272CDT | STMicroelectronics | CMOS | 5.5 | 3500 | 1 | 1100 | 1000 | 45 | 0 to 70 | Active | Cut Tape |
| TS272IDT | STMicroelectronics | CMOS | 5.5 | 3500 | 1 | 1100 | 1000 | 45 | -40 to 125 | Active | Tape & Reel |
| TS27L2ACDT | STMicroelectronics | CMOS | 0.04 | 100 | 1 | 900 | 10 | 45 | 0 to 70 | Active | Tape & Reel |
| TS27L2AIDT | STMicroelectronics | CMOS | 0.04 | 100 | 1 | 1100 | 10 | 45 | -40 to 125 | Active | Cut Tape |
| TS27L2BIDT | STMicroelectronics | CMOS | 0.04 | 100 | 1 | 250 | 10 | 45 | -40 to 125 | Active | Tape & Reel |
| LM432MA/NOPB | Texas Instruments | General Purpose | — | 1000 | 3 | 600 | 150 | 30 | -40 to 85 | Obsolete | Tube |
Engineering Selection Recommendations
Primary Recommendation: TLC27M7CDR
The TLC27M7CDR is the direct electrical equivalent of the TLC27M7CD, manufactured by Texas Instruments with identical electrical specifications. The only difference is packaging format: TLC27M7CDR is supplied in Cut Tape (CT) format rather than Tube. This part maintains Active product status, ensuring long-term availability and supply chain stability. Both parts are ROHS3 compliant with MSL Level 1 rating. Selection of TLC27M7CDR is appropriate for applications where the original TLC27M7CD specifications must be preserved exactly.
Secondary Recommendations: STMicroelectronics TS272 Series
The TS272 family (TS272ACDT, TS272AIDT, TS272BIDT, TS272CDT, TS272IDT) represents enhanced-performance CMOS dual amplifiers. These parts exceed the TLC27M7CD in slew rate (5.5 V/µs versus 0.62 V/µs) and gain bandwidth product (3.5 MHz versus 635 kHz), providing superior dynamic performance. All TS272 variants maintain the required 8-SOIC package, 3V to 16V supply range, and 45 mA output current per channel. Temperature range options include both 0°C to 70°C and -40°C to 125°C variants. Higher supply current (1 mA versus 285 µA) must be considered in power-constrained applications. All TS272 parts are Active status and ROHS3 compliant.
Tertiary Recommendations: STMicroelectronics TS27L2 Series
The TS27L2 family (TS27L2ACDT, TS27L2AIDT, TS27L2BIDT) represents low-power CMOS dual amplifiers optimized for ultra-low supply current operation (10 µA versus 285 µA). These parts are suitable for battery-powered or energy-harvesting applications. Slew rate (0.04 V/µs) and gain bandwidth product (100 kHz) are reduced compared to the TLC27M7CD, indicating slower signal response. All TS27L2 parts maintain 8-SOIC packaging, 3V to 16V supply range, and 45 mA output current per channel. Temperature range options include both 0°C to 70°C and -40°C to 125°C variants. All TS27L2 parts are Active status and ROHS3 compliant.
Not Recommended: LM432MA/NOPB
The LM432MA/NOPB is designated Obsolete status and is not recommended for new designs. Although it shares the 8-SOIC package and 30 mA output current specification, it is a General Purpose amplifier type rather than CMOS, with significantly different electrical characteristics (3 nA input bias current, 600 µV input offset voltage, 150 µA supply current). This part does not meet the CMOS amplifier type requirement and presents supply chain risk due to obsolete status.
Frequently Asked Questions (FAQ)
Q: Can I directly replace TLC27M7CD with TLC27M7CDR?
A: Yes. TLC27M7CDR is the direct electrical equivalent with identical specifications. The only difference is packaging format (Cut Tape versus Tube). Both are manufactured by Texas Instruments and are ROHS3 compliant with MSL Level 1. Mechanical compatibility is maintained as both use the 8-SOIC package.
Q: What is the key difference between TLC27M7CD and TS272 series amplifiers?
A: The TS272 series offers significantly higher performance: slew rate of 5.5 V/µs (versus 0.62 V/µs) and gain bandwidth product of 3.5 MHz (versus 635 kHz). This makes TS272 suitable for higher-frequency signal processing. However, TS272 consumes more supply current (1 mA versus 285 µA). Both maintain 8-SOIC packaging and 3V to 16V supply compatibility.
Q: When should I use TS27L2 series instead of TLC27M7CD?
A: Use TS27L2 series when ultra-low power consumption is critical. TS27L2 draws only 10 µA supply current compared to 285 µA for TLC27M7CD. This is beneficial for battery-powered applications. Accept the trade-off of reduced slew rate (0.04 V/µs) and lower bandwidth (100 kHz). Package and supply voltage range remain compatible.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All recommended substitute parts (TLC27M7CDR, TS272 series, TS27L2 series) are ROHS3 compliant with MSL Level 1 rating, matching the original TLC27M7CD compliance status.
Q: What is the significance of product status (Active versus Last Time Buy versus Obsolete)?
A: Product status indicates supply availability and manufacturer support. Active status guarantees ongoing production and long-term availability. Last Time Buy indicates limited remaining inventory from the manufacturer. Obsolete status means the manufacturer no longer produces the part, creating supply chain risk. For new designs, select parts with Active status.
Q: Can I use LM432MA/NOPB as a substitute?
A: No. LM432MA/NOPB is Obsolete status and is not recommended. Additionally, it is a General Purpose amplifier type, not CMOS, with different electrical characteristics that do not meet the TLC27M7CD specifications.
Q: Do all substitute parts use the same 8-SOIC package?
A: Yes. All recommended substitute parts use the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility with existing PCB layouts designed for TLC27M7CD.
Q: What is the temperature range consideration when selecting a substitute?
A: TLC27M7CD operates 0°C to 70°C. Some substitutes offer extended range (-40°C to 125°C). Select extended-range parts only if your application requires operation outside the 0°C to 70°C window, as extended-range parts may have different pricing and availability.
Q: How do I determine if a substitute part is suitable for my application?
A: Verify that the substitute meets all primary criteria: CMOS amplifier type, dual-channel configuration, 8-SOIC package, 3V to 16V supply range, and output current ≥30 mA. Then compare secondary electrical parameters (slew rate, bandwidth, bias current, offset voltage, supply current) against your application requirements. Consult application-specific datasheets for detailed performance validation.
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