TLC279CDR Equivalent & Substitute Parts

Part Overview

The TLC279CDR is an active linear amplifier integrated circuit manufactured by Texas Instruments, classified as a CMOS 4-circuit operational amplifier in a 14-SOIC surface mount package. This device is in active product status and is RoHS3 compliant with unlimited moisture sensitivity rating. The TLC279CDR serves applications requiring low-power CMOS amplification with four independent circuits in a single package. Equivalent and substitute parts are identified for applications where alternative sourcing, extended temperature ranges, enhanced performance specifications, or different packaging formats are required.

Substiute Parts

TLC279CDR

Texas InstrumentsIn Stock: 5009TLC279CDR Datasheet

Current PartRFQ

NCS20074DR2G

onsemiIn Stock: 10121NCS20074DR2G Datasheet

MFR RecommendedRFQ

TS27L4AIDT

STMicroelectronicsIn Stock: 1887TS27L4AIDT Datasheet

MFR RecommendedRFQ

TS27L4CDT

STMicroelectronicsIn Stock: 30238TS27L4CDT Datasheet

MFR RecommendedRFQ

TS27L4IDT

STMicroelectronicsIn Stock: 23476TS27L4IDT Datasheet

MFR RecommendedRFQ

TS27M4IDT

STMicroelectronicsIn Stock: 7922TS27M4IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC279CDR is determined by the following critical parameters: package type (14-SOIC surface mount), number of circuits (4), amplifier classification (CMOS or general-purpose), supply voltage range compatibility (minimum 3V, maximum 16V or higher), and operating temperature range. Parts are grouped into two categories based on functional equivalence:

Category 1: Direct CMOS Equivalents — Parts maintaining CMOS amplifier architecture with identical or compatible electrical specifications within the 3V to 16V supply range. These include TS27L4CDT, TS27L4AIDT, TS27L4IDT, and TS27M4IDT from STMicroelectronics. These parts preserve the low-power CMOS characteristics of the original design.

Category 2: General-Purpose Alternative — The NCS20074DR2G from onsemi operates as a general-purpose rail-to-rail amplifier with extended supply voltage range (2.7V to 36V) and wider operating temperature span (-40°C to 125°C). This part provides enhanced performance specifications but differs in amplifier type classification.

All substitute parts maintain the 14-SOIC package format, four-circuit configuration, and surface mount mounting type. All parts are RoHS3 compliant with unlimited moisture sensitivity rating.

Parameter Comparison

Engineering Selection Recommendations

For Direct CMOS Replacement (TS27L4CDT, TS27L4AIDT, TS27L4IDT, TS27M4IDT):

These STMicroelectronics parts maintain CMOS amplifier architecture and are suitable for applications where the TLC279CDR supply voltage range (3V to 16V) and package format are primary requirements. TS27L4CDT and TS27L4AIDT support the original operating temperature range of 0°C to 70°C, matching the TLC279CDR specification. TS27L4IDT and TS27M4IDT extend the operating temperature range to -40°C to 125°C, providing enhanced thermal performance for industrial and extended-range applications. All four parts are RoHS3 compliant and maintain unlimited moisture sensitivity rating. The TS27M4IDT offers intermediate slew rate (0.6V/µs) and gain bandwidth product (1 MHz) between the low-performance TS27L4 variants and the original TLC279CDR.

For General-Purpose Alternative (NCS20074DR2G):

The NCS20074DR2G from onsemi provides a general-purpose rail-to-rail amplifier configuration with extended supply voltage range (2.7V to 36V) and operating temperature span (-40°C to 125°C). This part is suitable for applications requiring higher output current capability (65 mA per channel versus 30 mA) and broader supply voltage compatibility. The NCS20074DR2G is RoHS3 compliant with unlimited moisture sensitivity rating. Selection of this part is appropriate when applications demand extended voltage headroom or wider temperature operation beyond the TLC279CDR specification.

All substitute parts are active products with established supply chains and are suitable for direct component selection based on application requirements and environmental constraints.

Frequently Asked Questions (FAQ)

Q: Can the TS27L4CDT directly replace the TLC279CDR in all applications?

A: The TS27L4CDT maintains the same 14-SOIC package, four-circuit CMOS configuration, and 3V to 16V supply voltage range as the TLC279CDR. However, the TS27L4CDT operates at 0°C to 70°C, matching the original temperature range. Key differences include significantly lower slew rate (0.04V/µs versus 3.6V/µs) and gain bandwidth product (100 kHz versus 2.2 MHz). Direct replacement is valid only for applications where these reduced performance specifications are acceptable.

Q: What is the primary advantage of the NCS20074DR2G over the TLC279CDR?

A: The NCS20074DR2G provides extended supply voltage range (2.7V to 36V versus 3V to 16V), wider operating temperature span (-40°C to 125°C versus 0°C to 70°C), and higher output current per channel (65 mA versus 30 mA). These specifications make the NCS20074DR2G suitable for applications requiring broader environmental tolerance and higher output drive capability. The NCS20074DR2G is classified as a general-purpose amplifier rather than CMOS, which may affect input bias current and offset voltage characteristics.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts listed are available in 14-SOIC surface mount package format, matching the TLC279CDR package specification. Packaging options differ by supplier: some parts are supplied in Cut Tape (CT), others in Tape & Reel (TR), and some in Cut Tape & Digi-Reel® format. These packaging variations do not affect electrical compatibility; they reflect different distribution and handling methods.

Q: Which substitute part offers the lowest power consumption?

A: The TS27L4CDT, TS27L4AIDT, and TS27L4IDT all consume 10µA across four channels, significantly lower than the TLC279CDR (2.7 mA). These parts are suitable for battery-powered and low-power applications. The TS27M4IDT consumes 150µA, and the NCS20074DR2G consumes 420µA, both higher than the TS27L4 variants but lower than the original TLC279CDR.

Q: What is the significance of the operating temperature range difference?

A: The TLC279CDR operates from 0°C to 70°C, suitable for commercial and consumer applications. The TS27L4CDT maintains this range. The TS27L4AIDT, TS27L4IDT, TS27M4IDT, and NCS20074DR2G extend operation to -40°C to 125°C, supporting industrial, automotive, and extended-temperature applications. Selection depends on the target application environment and thermal requirements.

Q: Are all parts RoHS3 compliant?

A: All listed parts, including the TLC279CDR and all substitute options, are RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). This ensures compatibility with modern manufacturing processes and environmental regulations.

Q: How do input offset voltage specifications compare across substitute parts?

A: The TLC279CDR specifies 320µV input offset voltage. The TS27L4CDT and TS27L4IDT specify 1.1 mV, the TS27L4AIDT specifies 900µV, the TS27M4IDT specifies 1.1 mV, and the NCS20074DR2G specifies 1.3 mV. Applications requiring precision signal conditioning with minimal offset drift should account for these differences in circuit design.

Q: What is the difference between TS27L4 and TS27M4 variants?

A: Both are CMOS 4-circuit amplifiers in 14-SOIC packages with identical supply voltage range (3V to 16V). The TS27M4IDT provides higher slew rate (0.6V/µs versus 0.04V/µs) and gain bandwidth product (1 MHz versus 100 kHz), with correspondingly higher supply current (150µA versus 10µA). The TS27M4IDT is suitable for applications requiring faster signal response, while the TS27L4 variants are optimized for ultra-low-power operation.