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LMC660AIM/NOPB Equivalent & Substitute Parts
Part Overview
The LMC660AIM/NOPB is a CMOS operational amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit push-pull, rail-to-rail amplifier in a 14-SOIC surface mount package. This device is classified as Last Time Buy, indicating discontinued production with limited remaining inventory of 1,785 pieces. The LMC660AIM/NOPB operates across a supply voltage range of 4.75 V to 15.5 V and maintains performance over the industrial temperature range of -40°C to 85°C. Identification of equivalent and substitute parts is necessary due to the Last Time Buy status, which restricts long-term availability for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LMC660AIM/NOPB |
| Manufacturer | Texas Instruments |
| Category | Linear, Amplifiers |
| Amplifier Type | CMOS |
| Number of Circuits | 4 |
| Output Type | Push-Pull, Rail-to-Rail |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Slew Rate | 1.1 V/µs |
| Gain Bandwidth Product | 1.4 MHz |
| Current - Input Bias | 0.002 pA |
| Voltage - Input Offset | 1 mV |
| Current - Supply | 1.5 mA (x4 Channels) |
| Current - Output / Channel | 40 mA |
| Voltage - Supply Span (Min) | 4.75 V |
| Voltage - Supply Span (Max) | 15.5 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Last Time Buy |
Substitute Part Grouping Explanation
Substitution of the LMC660AIM/NOPB is determined by strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
Critical Matching Parameters:
- Package type: 14-SOIC surface mount configuration
- Number of circuits: 4 independent amplifier channels
- Output configuration: Rail-to-rail capability
- Supply voltage range: Minimum 4.75 V to maximum 15.5 V compatibility
- Operating temperature range: Support for -40°C to 85°C minimum
- Mounting type: Surface mount only
Secondary Compatibility Parameters:
- Slew rate: 1.1 V/µs or higher
- Gain bandwidth product: 1.4 MHz or higher
- Input bias current: 0.002 pA or lower
- Input offset voltage: 1 mV or lower
- Output current per channel: 40 mA or higher
- Supply current: 1.5 mA per channel or lower
Substitute parts are grouped into two categories: direct replacements from Texas Instruments (same manufacturer, active product status) and cross-manufacturer alternatives (Analog Devices Inc.) that meet or exceed all critical and secondary parameters while maintaining identical package geometry and pin configuration.
Parameter Comparison
| Parameter | LMC660AIM/NOPB | LMC660AIMX/NOPB | TLC2274ACD | TLC2274ACDR | TLC2274AID | TLC2274AIDR | TLC2274AQDR | AD8664ARZ | AD8664ARZ-REEL7 | AD8669ARZ | AD8669ARZ-REEL |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Output Type | Push-Pull, Rail-to-Rail | Push-Pull, 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 | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Slew Rate (V/µs) | 1.1 | 1.1 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.5 | 3.5 | 0.3 | 0.3 |
| Gain Bandwidth Product (MHz) | 1.4 | 1.4 | 2.25 | 2.25 | 2.25 | 2.25 | 2.25 | 4 | 4 | 0.54 | 0.54 |
| Current - Input Bias (pA) | 0.002 | 0.002 | 1 | 1 | 1 | 1 | 1 | 0.3 | 0.3 | 0.3 | 0.3 |
| Voltage - Input Offset (mV) | 1 | 1 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.05 | 0.05 | 0.04 | 0.04 |
| Current - Supply (mA x4 Channels) | 1.5 | 1.5 | 4.8 | 4.8 | 4.8 | 4.8 | 4.8 | 1.25 | 1.25 | 0.23 | 0.23 |
| Current - Output / Channel (mA) | 40 | 40 | 50 | 50 | 50 | 50 | 50 | 140 | 140 | 50 | 50 |
| Voltage - Supply Span Min (V) | 4.75 | 4.75 | 4.4 | 4.4 | 4.4 | 4.4 | 4.4 | 5 | 5 | 5 | 5 |
| Voltage - Supply Span Max (V) | 15.5 | 15.5 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Operating Temperature (°C) | -40 ~ 85 | -40 ~ 85 | 0 ~ 70 | 0 ~ 70 | -40 ~ 125 | -40 ~ 125 | -40 ~ 125 | -40 ~ 125 | -40 ~ 125 | -40 ~ 125 | -40 ~ 125 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | 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 | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Last Time Buy | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Recommendation: LMC660AIMX/NOPB
The LMC660AIMX/NOPB is the direct functional equivalent of the LMC660AIM/NOPB, manufactured by Texas Instruments with identical electrical specifications and 14-SOIC package configuration. This part maintains Active product status with significantly higher inventory availability (19,100 pieces) compared to the Last Time Buy LMC660AIM/NOPB. The LMC660AIMX/NOPB differs only in packaging format (Cut Tape & Digi-Reel® versus Tube), making it the optimal choice for design continuity and supply chain stability. Both parts are ROHS3 compliant with MSL 1 rating.
Secondary Recommendation: TLC2274 Series (TLC2274ACD, TLC2274ACDR, TLC2274AID, TLC2274AIDR, TLC2274AQDR)
The TLC2274 series from Texas Instruments provides functional substitution with enhanced performance characteristics. All variants feature 4-circuit, rail-to-rail configuration in 14-SOIC packages with Active product status. The TLC2274 series offers higher slew rate (3.6 V/µs versus 1.1 V/µs), improved gain bandwidth product (2.25 MHz versus 1.4 MHz), and superior input offset voltage (300 µV versus 1 mV). Supply voltage compatibility ranges from 4.4 V to 16 V, encompassing the LMC660AIM/NOPB operating range. Temperature range variants are available: TLC2274ACD and TLC2274ACDR support 0°C to 70°C, while TLC2274AID, TLC2274AIDR, and TLC2274AQDR support -40°C to 125°C. The TLC2274AQDR variant includes automotive qualification (AEC-Q100) for applications requiring automotive-grade components. All TLC2274 variants are ROHS3 compliant with MSL 1 rating.
Tertiary Recommendation: AD8664 Series (AD8664ARZ, AD8664ARZ-REEL7)
The AD8664 series from Analog Devices Inc. offers cross-manufacturer substitution with superior performance specifications. Both variants feature CMOS amplifier technology with 4 circuits in 14-SOIC packages and Active product status. The AD8664 series delivers higher slew rate (3.5 V/µs), significantly higher gain bandwidth product (4 MHz), lower input bias current (0.3 pA), and substantially higher output current capability (140 mA per channel versus 40 mA). Supply voltage range is 5 V to 16 V, with operating temperature range of -40°C to 125°C. The AD8664ARZ is supplied in Tube packaging, while AD8664ARZ-REEL7 is supplied in Tape & Reel format. Both are ROHS3 compliant with MSL 1 rating and DigiTrim® series designation.
Alternative Consideration: AD8669 Series (AD8669ARZ, AD8669ARZ-REEL)
The AD8669 series from Analog Devices Inc. provides general-purpose amplifier substitution with ultra-low supply current characteristics. Both variants feature 4 circuits in 14-SOIC packages with Active product status and DigiTrim® series designation. The AD8669 series is optimized for low-power applications with supply current of only 230 µA (x4 channels) compared to 1.5 mA for the LMC660AIM/NOPB. However, the AD8669 series exhibits lower slew rate (0.3 V/µs) and lower gain bandwidth product (540 kHz), making it suitable only for applications where bandwidth requirements are not critical. Supply voltage range is 5 V to 16 V, with operating temperature range of -40°C to 125°C. Both are ROHS3 compliant with MSL 1 rating.
Frequently Asked Questions (FAQ)
Q1: Can I directly replace LMC660AIM/NOPB with LMC660AIMX/NOPB without circuit modifications?
A: Yes. The LMC660AIMX/NOPB is electrically and functionally identical to the LMC660AIM/NOPB. Both parts share identical pin configuration, electrical specifications, and 14-SOIC package geometry. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). No circuit modifications are required for direct substitution.
Q2: What are the key differences between LMC660AIM/NOPB and TLC2274 series substitutes?
A: The TLC2274 series offers enhanced performance with higher slew rate (3.6 V/µs versus 1.1 V/µs), higher gain bandwidth product (2.25 MHz versus 1.4 MHz), and lower input offset voltage (300 µV versus 1 mV). Both maintain 4-circuit, rail-to-rail configuration in 14-SOIC packages. The TLC2274 series has higher supply current (4.8 mA versus 1.5 mA per channel) and higher output current capability (50 mA versus 40 mA per channel). Temperature range variants are available for different application requirements.
Q3: Are AD8664 and AD8669 series suitable for all applications requiring LMC660AIM/NOPB?
A: AD8664 series is suitable for applications requiring higher bandwidth and output current capability. AD8669 series is suitable only for low-power applications where bandwidth requirements are not critical. Both series maintain 14-SOIC package compatibility and rail-to-rail output configuration. Verify that your application's bandwidth and slew rate requirements are met before substitution.
Q4: What is the temperature range compatibility for TLC2274 variants?
A: TLC2274ACD and TLC2274ACDR support 0°C to 70°C operating temperature. TLC2274AID, TLC2274AIDR, and TLC2274AQDR support -40°C to 125°C operating temperature. The LMC660AIM/NOPB operates from -40°C to 85°C. For applications requiring the full -40°C to 85°C range, use TLC2274AID, TLC2274AIDR, or TLC2274AQDR variants.
Q5: Is TLC2274AQDR suitable for automotive applications?
A: Yes. The TLC2274AQDR is qualified to AEC-Q100 automotive standard and carries automotive-grade designation. This variant is appropriate for automotive applications requiring qualified components. Other TLC2274 variants and AD8664/AD8669 series do not carry automotive qualification.
Q6: What packaging options are available for substitute parts?
A: LMC660AIMX/NOPB is available in Cut Tape & Digi-Reel® format. TLC2274ACD and TLC2274AID are available in Tube packaging. TLC2274ACDR and TLC2274AIDR are available in Cut Tape & Digi-Reel® format. TLC2274AQDR packaging is not specified. AD8664ARZ is available in Tube packaging. AD8664ARZ-REEL7 is available in Tape & Reel format. AD8669ARZ is available in Tube packaging. AD8669ARZ-REEL is available in Tape & Reel format. Select packaging based on your assembly process requirements.
Q7: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and carry ECCN EAR99 classification.
Q8: What is the supply current difference between LMC660AIM/NOPB and substitute options?
A: LMC660AIM/NOPB: 1.5 mA (x4 channels). LMC660AIMX/NOPB: 1.5 mA (x4 channels). TLC2274 series: 4.8 mA (x4 channels). AD8664 series: 1.25 mA (x4 channels). AD8669 series: 230 µA (x4 channels). For power-sensitive applications, AD8669 series offers the lowest supply current. For performance-optimized applications, AD8664 series offers comparable supply current with superior bandwidth.
Q9: Can I use AD8664 or AD8669 in place of LMC660AIM/NOPB without design verification?
A: Cross-manufacturer substitution requires verification of application-specific requirements including bandwidth, slew rate, output current, and supply current. While all parts maintain 14-SOIC package compatibility and rail-to-rail output configuration, electrical performance differences may affect circuit behavior. Verify that your application's performance requirements are met by the substitute part's specifications before implementation.
Q10: What inventory status should I consider when selecting a substitute?
A: LMC660AIM/NOPB has Last Time Buy status with 1,785 pieces available. LMC660AIMX/NOPB has Active status with 19,100 pieces available. TLC2274 series variants have Active status with inventory ranging from 1,372 to 20,100 pieces. AD8664 and AD8669 series have Active status with inventory ranging from 918 to 3,820 pieces. For long-term supply chain stability, select parts with Active product status and higher inventory levels.
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