TLC2274QDR Equivalent & Substitute Parts

Part Overview

The TLC2274QDR is a general-purpose operational amplifier featuring four independent circuits in a 14-SOIC surface-mount package. Manufactured by Texas Instruments, this device provides rail-to-rail output capability with a supply voltage range of 4.4 V to 16 V and operates across the automotive temperature range of -40°C to 125°C. The TLC2274QDR holds AEC-Q100 automotive qualification and is rated for automotive-grade applications.

The product status of TLC2274QDR is listed as Obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLC2274QDR
Manufacturer	Texas Instruments
Category	Linear, Amplifiers
Description	IC OPAMP GP 4 CIRCUIT 14SOIC
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C (TA)
Voltage - Supply Span (Min)	4.4 V
Voltage - Supply Span (Max)	16 V
Product Status	Obsolete
Grade	Automotive
Qualification	AEC-Q100

Substitute Part Grouping Explanation

Substitution of the TLC2274QDR is determined by the following critical parameters that must be maintained or exceeded in equivalent devices:

Mechanical Compatibility: All substitute parts must utilize the 14-SOIC (0.154", 3.90mm Width) surface-mount package to ensure direct board-level compatibility without layout modifications.

Functional Requirements: Substitute parts must provide four independent operational amplifier circuits with rail-to-rail output capability. The supply voltage operating range must encompass the original specification of 4.4 V to 16 V minimum and maximum, respectively.

Electrical Performance: Substitute parts must support the operating temperature range of -40°C to 125°C. Current output per channel must be rated at or above 50 mA to maintain load-driving capability.

Compliance and Certification: For automotive applications, substitute parts should maintain AEC-Q100 qualification or equivalent automotive-grade certification where available. RoHS compliance status and moisture sensitivity level (MSL) are secondary considerations for legacy design support.

The substitute parts identified below satisfy these core substitution criteria through equivalent or superior electrical and mechanical specifications.

Parameter Comparison

Parameter	TLC2274QDR	LMC6084AIM/NOPB	LMC6084AIMX/NOPB	LMC6084IM/NOPB	LMC6084IMX/NOPB	MCP6H04-E/SL	MCP6H04T-E/SL
Manufacturer	Texas Instruments	National Semiconductor	Texas Instruments	Texas Instruments	Texas Instruments	Microchip Technology	Microchip Technology
Amplifier Type	General Purpose	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C
Voltage - Supply Span (Min)	4.4 V	4.5 V	4.5 V	4.5 V	4.5 V	3.5 V	3.5 V
Voltage - Supply Span (Max)	16 V	15.5 V	15.5 V	15.5 V	15.5 V	16 V	16 V
Current - Output / Channel	50 mA	34 mA	34 mA	34 mA	34 mA	50 mA	50 mA
Slew Rate	3.6 V/µs	1.5 V/µs	1.5 V/µs	1.5 V/µs	1.5 V/µs	0.8 V/µs	0.8 V/µs
Gain Bandwidth Product	2.25 MHz	1.3 MHz	1.3 MHz	1.3 MHz	1.3 MHz	1.2 MHz	1.2 MHz
Current - Input Bias	1 pA	0.01 pA	0.01 pA	0.01 pA	0.01 pA	10 pA	10 pA
Voltage - Input Offset	300 µV	150 µV	150 µV	150 µV	150 µV	700 µV	700 µV
Current - Supply	4.8 mA (x4 Channels)	2.2 mA (x4 Channels)	2.2 mA (x4 Channels)	2.2 mA (x4 Channels)	2.2 mA (x4 Channels)	135 µA (x4 Channels)	135 µA (x4 Channels)
Product Status	Obsolete	Active	Active	Last Time Buy	Active	Active	Active
RoHS Status	RoHS non-compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes for Automotive Applications:

The MCP6H04-E/SL and MCP6H04T-E/SL (Microchip Technology) are the preferred substitutes for the TLC2274QDR in automotive-grade applications. Both devices maintain the full operating temperature range of -40°C to 125°C, matching the original specification. These general-purpose amplifiers provide identical output current capability (50 mA per channel) and support the complete supply voltage range (3.5 V to 16 V), which exceeds the original 4.4 V to 16 V specification. Both variants are ROHS3 compliant and actively produced, ensuring long-term supply availability. The MCP6H04-E/SL is supplied in tube packaging, while the MCP6H04T-E/SL is supplied in tape and reel format for automated assembly.

Secondary Substitutes for Non-Automotive Applications:

The LMC6084 series (LMC6084AIM/NOPB, LMC6084AIMX/NOPB, LMC6084IM/NOPB, and LMC6084IMX/NOPB) from Texas Instruments and National Semiconductor provide CMOS-based alternatives with superior electrical characteristics including lower input bias current (0.01 pA) and reduced input offset voltage (150 µV). However, these devices operate only to 85°C maximum, which restricts their use to non-automotive applications or designs not requiring the full automotive temperature range. The LMC6084AIMX/NOPB and LMC6084IMX/NOPB variants are actively produced and ROHS3 compliant. The LMC6084IM/NOPB is designated as Last Time Buy. All LMC6084 variants provide reduced supply current consumption (2.2 mA total) compared to the original device, offering power efficiency benefits in battery-powered applications.

Packaging Considerations:

All identified substitutes maintain the 14-SOIC surface-mount package footprint, enabling direct board-level replacement without PCB redesign. Selection between tube and tape-and-reel packaging variants depends on assembly process requirements and production volume.

Frequently Asked Questions (FAQ)

Q: Can the MCP6H04 series directly replace the TLC2274QDR without circuit modifications?

A: Yes. The MCP6H04-E/SL and MCP6H04T-E/SL provide direct functional replacement. Both devices feature four independent rail-to-rail output amplifiers in the identical 14-SOIC package. The supply voltage range (3.5 V to 16 V) encompasses the original specification (4.4 V to 16 V), and output current capability (50 mA per channel) matches the original device. Operating temperature range (-40°C to 125°C) is identical. No circuit modifications are required for pin-compatible substitution.

Q: Why do the LMC6084 variants operate only to 85°C when the original TLC2274QDR operates to 125°C?

A: The LMC6084 series uses CMOS amplifier architecture optimized for low power consumption and precision performance. This architecture exhibits temperature-dependent performance limitations that restrict the maximum operating temperature to 85°C. Applications requiring the full -40°C to 125°C automotive temperature range must use the MCP6H04 series instead.

Q: What is the difference between LMC6084AIM/NOPB and LMC6084AIMX/NOPB?

A: The primary difference is packaging format. The LMC6084AIM/NOPB is supplied in bulk packaging, while the LMC6084AIMX/NOPB is supplied in tape and reel format suitable for automated pick-and-place assembly. Both variants are manufactured by Texas Instruments and provide identical electrical specifications. The AIMX variant is actively produced; the AIM variant is manufactured by National Semiconductor.

Q: Are all substitute parts RoHS compliant?

A: The MCP6H04-E/SL, MCP6H04T-E/SL, LMC6084AIMX/NOPB, LMC6084IM/NOPB, and LMC6084IMX/NOPB are ROHS3 compliant. The LMC6084AIM/NOPB RoHS status is not specified in the available data. The original TLC2274QDR is RoHS non-compliant. For applications requiring RoHS compliance, the MCP6H04 series or the ROHS3-compliant LMC6084 variants are required.

Q: What is the impact of lower slew rate in substitute parts?

A: The TLC2274QDR provides a slew rate of 3.6 V/µs. The LMC6084 series provides 1.5 V/µs, and the MCP6H04 series provides 0.8 V/µs. Slew rate determines the maximum rate of output voltage change. Applications requiring high-speed signal transitions or driving capacitive loads may experience performance differences. Designs operating at frequencies below 100 kHz typically show negligible impact from reduced slew rate.

Q: Which substitute part offers the lowest power consumption?

A: The MCP6H04-E/SL and MCP6H04T-E/SL provide the lowest supply current at 135 µA total for all four channels. The LMC6084 series consumes 2.2 mA total. The original TLC2274QDR consumes 4.8 mA total. For battery-powered or low-power applications, the MCP6H04 series is the optimal choice.

Q: Can I use LMC6084 variants in automotive applications?

A: The LMC6084 series is not qualified for automotive applications and does not carry AEC-Q100 certification. These devices are suitable for industrial and consumer applications only. For automotive-grade designs, the MCP6H04 series is the appropriate substitute.

Q: What is the difference between tube and tape-and-reel packaging?

A: Tube packaging (MCP6H04-E/SL, LMC6084IM/NOPB) is suitable for manual assembly and lower-volume production. Tape-and-reel packaging (MCP6H04T-E/SL, LMC6084AIMX/NOPB, LMC6084IMX/NOPB) is optimized for automated pick-and-place assembly equipment and higher-volume production. Both formats contain identical components; packaging selection depends on assembly process requirements.

Q: Is the TLC2274QDR still available for purchase?

A: The TLC2274QDR is listed as Obsolete. While 863 pieces are reported in current inventory, long-term availability is not assured. Designs currently using this device should transition to active substitute parts to ensure supply chain continuity. The MCP6H04 series and LMC6084 variants are all actively produced or designated as Last Time Buy, providing superior long-term availability.

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