TLC2274AMDR Equivalent & Substitute Parts

Part Overview

The TLC2274AMDR 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 4.4V to 16V and operates across an extended temperature range of -55°C to 125°C. The product is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain compatibility with the 14-SOIC package format and preserve critical electrical characteristics including supply voltage compatibility, output drive capability, and thermal operating range.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Slew Rate	3.6	V/µs
Gain Bandwidth Product	2.25	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	300	µV
Current - Supply	4.8 (x4 Channels)	mA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	4.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-55 to 125	°C
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLC2274AMDR is determined by strict adherence to the following electrical and mechanical criteria:

Primary Compatibility Requirements:

Package format: 14-SOIC (0.154", 3.90mm Width) surface-mount configuration
Circuit count: Four independent amplifier circuits
Output configuration: Rail-to-rail output capability
Supply voltage range: Minimum 4.4V to maximum 16V overlap with substitute part specifications
Output current capability: Minimum 50 mA per channel
Operating temperature range: Substitute must support at least the -55°C to 125°C span or a subset thereof

Substitution Logic: Substitute parts are grouped into two categories based on amplifier topology and performance characteristics:

CMOS Amplifier Substitutes (LMC Series): Lower supply current consumption (1.5–2.2 mA total), reduced input bias current (0.002–0.01 pA), and lower slew rates (1.1–1.5 V/µs). These devices maintain rail-to-rail output and 14-SOIC packaging. Operating temperature ranges are narrower (-40°C to 85°C or 0°C to 70°C) compared to the main part.
General-Purpose and J-FET Substitutes: MCP6H04-E/SL provides general-purpose amplification with extended temperature range (-40°C to 125°C) and lower minimum supply voltage (3.5V). AD8643ARZ offers J-FET input topology with higher slew rate (3V/µs) and extended supply voltage range (5V to 26V), supporting the full -40°C to 125°C temperature span.

All substitute parts maintain the 14-SOIC package footprint and four-circuit configuration, ensuring direct pin-compatible replacement in PCB layouts.

Parameter Comparison

Parameter	TLC2274AMDR	LMC6084AIM/NOPB	LMC6084AIMX/NOPB	LMC6084IM/NOPB	LMC6084IMX/NOPB	LMC660AIM/NOPB	LMC660AIMX/NOPB	LMC660CM/NOPB	LMC660CMX/NOPB	AD8643ARZ	MCP6H04-E/SL
Amplifier Type	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	J-FET	General Purpose
Number of Circuits	4	4	4	4	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	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	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Slew Rate (V/µs)	3.6	1.5	1.5	1.5	1.5	1.1	1.1	1.1	1.1	3.0	0.8
Gain Bandwidth Product (MHz)	2.25	1.3	1.3	1.3	1.3	1.4	1.4	1.4	1.4	3.5	1.2
Current - Input Bias (pA)	1	0.01	0.01	0.01	0.01	0.002	0.002	0.002	0.002	0.25	10
Voltage - Input Offset (µV)	300	150	150	150	150	1000	1000	1000	1000	70	700
Current - Supply (mA, x4 Channels)	4.8	2.2	2.2	2.2	2.2	1.5	1.5	1.5	1.5	0.2	0.135
Current - Output / Channel (mA)	50	34	34	34	34	40	40	40	40	12	50
Voltage - Supply Span Min (V)	4.4	4.5	4.5	4.5	4.5	4.75	4.75	4.75	4.75	5	3.5
Voltage - Supply Span Max (V)	16	15.5	15.5	15.5	15.5	15.5	15.5	15.5	15.5	26	16
Operating Temperature (°C)	-55 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70	0 to 70	-40 to 125	-40 to 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	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Last Time Buy	Active	Last Time Buy	Active	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

For Extended Temperature Range Applications (-55°C to 125°C):

Select either AD8643ARZ or MCP6H04-E/SL. AD8643ARZ provides J-FET input topology with superior slew rate (3.0 V/µs) and extended supply voltage range (5V to 26V), supporting the full temperature span. MCP6H04-E/SL offers general-purpose amplification with the lowest minimum supply voltage (3.5V) and maintains the full -40°C to 125°C operating range. Both devices are ROHS3 compliant and carry Active product status.

For Standard Industrial Temperature Range (-40°C to 85°C):

LMC6084 series devices (LMC6084AIMX/NOPB or LMC6084IMX/NOPB) provide CMOS topology with reduced supply current (2.2 mA total) and improved input bias current (0.01 pA). These parts are ROHS3 compliant and maintain Active product status. LMC6084AIMX/NOPB is available in Tape & Reel packaging with 4100 pcs inventory.

For Commercial Temperature Range (0°C to 70°C):

LMC660CMX/NOPB delivers the lowest supply current consumption (1.5 mA total) and highest inventory availability (17,800 pcs). This device is ROHS3 compliant with Active product status and Cut Tape & Digi-Reel packaging.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant, addressing environmental regulatory requirements. The original TLC2274AMDR is RoHS non-compliant. All substitute devices maintain MSL Level 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Packaging and Procurement:

Substitute parts are available in multiple packaging formats: Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel. Selection should align with production volume and assembly process requirements. Inventory levels range from 1,294 to 19,100 pcs across substitute options.

Frequently Asked Questions (FAQ)

Q: Can LMC6084 series devices directly replace the TLC2274AMDR in existing PCB designs?

A: Yes, LMC6084 series devices are pin-compatible 14-SOIC replacements. However, the operating temperature range is narrower (-40°C to 85°C versus -55°C to 125°C). Verify that your application does not require operation below -40°C or above 85°C. Additionally, LMC6084 devices feature lower output current per channel (34 mA versus 50 mA), which may impact high-current output applications.

Q: What is the key difference between LMC6084 and LMC660 series substitutes?

A: Both are CMOS quad amplifiers in 14-SOIC packages with rail-to-rail output. LMC6084 provides higher output current per channel (34 mA) and higher gain bandwidth product (1.3 MHz). LMC660 offers lower total supply current (1.5 mA versus 2.2 mA) and lower input bias current (0.002 pA versus 0.01 pA), making it suitable for ultra-low-power applications. LMC660 has a higher minimum supply voltage (4.75V versus 4.5V).

Q: Does the AD8643ARZ substitute provide better performance than CMOS alternatives?

A: AD8643ARZ uses J-FET input topology, delivering superior slew rate (3.0 V/µs versus 1.1–1.5 V/µs in CMOS devices) and lower input offset voltage (70 µV versus 150–1000 µV). It also supports extended supply voltage (5V to 26V) and full temperature range (-40°C to 125°C). However, output current per channel is limited to 12 mA, which is significantly lower than the TLC2274AMDR (50 mA). Select AD8643ARZ only if your application does not require high output current.

Q: Is MCP6H04-E/SL suitable for low-voltage applications?

A: Yes, MCP6H04-E/SL has the lowest minimum supply voltage (3.5V) among all substitutes, making it ideal for battery-powered and low-voltage systems. It maintains the full -40°C to 125°C operating range and ROHS3 compliance. However, slew rate is lower (0.8 V/µs), and input bias current is higher (10 pA), which may affect high-speed or precision applications.

Q: What packaging options are available for high-volume production?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging are available for automated assembly. LMC660AIMX/NOPB (Tape & Reel, 19,100 pcs) and LMC660CMX/NOPB (Cut Tape & Digi-Reel, 17,800 pcs) offer the highest inventory levels. Tube packaging is available for lower-volume applications.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are ROHS3 compliant. The original TLC2274AMDR is RoHS non-compliant. If your design or procurement requirements mandate RoHS compliance, any of the listed substitutes will satisfy this requirement.

Q: What is the impact of lower output current in substitute devices?

A: The TLC2274AMDR provides 50 mA per channel. LMC6084 series provides 34 mA, LMC660 series provides 40 mA, and AD8643ARZ provides only 12 mA. If your circuit requires driving high-current loads directly from the amplifier output, verify that the substitute device's output current capability is sufficient. For applications requiring higher output current, consider adding external buffer stages or selecting MCP6H04-E/SL (50 mA per channel, matching the original).

Q: Can I use LMC660CM/NOPB or LMC660CMX/NOPB in designs requiring -55°C operation?

A: No. LMC660CM/NOPB and LMC660CMX/NOPB operate only from 0°C to 70°C. These devices are not suitable for extended low-temperature applications. Select AD8643ARZ or MCP6H04-E/SL for -55°C to 125°C range support.

Q: What is the difference between LMC6084IM/NOPB (Last Time Buy) and LMC6084AIMX/NOPB (Active)?

A: Both are functionally identical CMOS quad amplifiers in 14-SOIC packages. LMC6084IM/NOPB is classified as Last Time Buy, indicating limited future availability. LMC6084AIMX/NOPB is Active with ongoing production and higher inventory (4,100 pcs). For new designs, prioritize Active status parts to ensure long-term supply continuity.

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