TLC2274AMDREP Equivalent & Substitute Parts

Part Overview

The TLC2274AMDREP is a general-purpose operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-SOIC surface-mount package. This LinCMOS™ series device operates across a supply voltage range of 4.4 V to 16 V with rail-to-rail output capability and is classified as an active product with full RoHS3 compliance. Substitute parts are identified when equivalent functional performance is required due to inventory constraints, application-specific performance needs, or design optimization requirements while maintaining compatibility with the 14-SOIC package footprint and surface-mount assembly process.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TLC2274AMDREP	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
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	—
Voltage - Supply Span (Min)	4.4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	-55°C ~ 125°C	—
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
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitute parts for the TLC2274AMDREP are qualified based on the following critical parameters that determine functional and physical compatibility:

Physical Compatibility:

Package type: 14-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Pin count and footprint equivalence

Electrical Compatibility:

Number of circuits: 4 independent amplifier channels
Output type: Rail-to-Rail capability
Supply voltage range: Minimum 4.4 V to maximum 16 V (substitute must support this range or exceed it)
Operating temperature range: -55°C to 125°C (substitute must support this range or exceed it)

Performance Parameters:

Slew rate: 3.6 V/µs or greater
Gain bandwidth product: 2.25 MHz or greater
Current output per channel: 50 mA or greater
Input bias current: 1 pA or lower
Input offset voltage: 300 µV or lower

All substitute parts listed maintain the 14-SOIC package format and surface-mount assembly compatibility. Substitutes are classified by amplifier type (General Purpose vs. J-FET) and packaging configuration (Tube, Cut Tape & Digi-Reel®, or Tape & Reel).

Parameter Comparison

Parameter	TLC2274AMDREP	AD8643ARZ	AD8643ARZ-REEL7	AD8643TRZ-EP	AD8643TRZ-EP-R7
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	J-FET	J-FET	J-FET	J-FET
Number of Circuits	4	4	4	4	4
Output Type	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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	4.4 V	5 V	5 V	5 V	5 V
Voltage - Supply Span (Max)	16 V	26 V	26 V	26 V	26 V
Operating Temperature	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Slew Rate	3.6 V/µs	3 V/µs	3 V/µs	3 V/µs	3 V/µs
Gain Bandwidth Product	2.25 MHz	3.5 MHz	3.5 MHz	3.5 MHz	3.5 MHz
Current - Input Bias	1 pA	0.25 pA	0.25 pA	0.25 pA	0.25 pA
Voltage - Input Offset	300 µV	70 µV	70 µV	50 µV	50 µV
Current - Supply	4.8 mA (x4)	200 µA (x4)	200 µA (x4)	200 µA (x4)	200 µA (x4)
Current - Output / Channel	50 mA	12 mA	12 mA	12 mA	12 mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), meeting the same regulatory and environmental standards as the TLC2274AMDREP.

AD8643ARZ and AD8643ARZ-REEL7 (Tube and Cut Tape & Digi-Reel® Packaging): These variants are functionally identical J-FET amplifiers with superior input bias current (0.25 pA vs. 1 pA) and lower input offset voltage (70 µV vs. 300 µV). The minimum supply voltage is 5 V, which is 0.6 V higher than the TLC2274AMDREP. The operating temperature range is -40°C to 125°C, which does not extend to -55°C. These parts are suitable for applications where the minimum supply voltage of 5 V is acceptable and the lower temperature limit of -40°C meets system requirements.

AD8643TRZ-EP and AD8643TRZ-EP-R7 (Tube and Tape & Reel Packaging): These variants are J-FET amplifiers with the lowest input offset voltage (50 µV) and operating temperature range of -55°C to 125°C, matching the TLC2274AMDREP temperature specification. The minimum supply voltage is 5 V. These parts provide enhanced precision characteristics while maintaining full temperature range compatibility.

Selection between substitute parts depends on packaging requirements (Tube, Cut Tape & Digi-Reel®, or Tape & Reel), minimum supply voltage constraints, and temperature range specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can AD8643 series parts directly replace the TLC2274AMDREP in all applications?

A: AD8643 series parts are physically and functionally compatible in the 14-SOIC package. However, two electrical differences require verification: (1) minimum supply voltage is 5 V instead of 4.4 V, and (2) output current per channel is 12 mA instead of 50 mA. Applications requiring operation below 5 V supply or output currents exceeding 12 mA per channel are not compatible with AD8643 substitutes.

Q: What is the difference between AD8643ARZ, AD8643ARZ-REEL7, AD8643TRZ-EP, and AD8643TRZ-EP-R7?

A: These are the same AD8643 J-FET amplifier with differences in packaging and temperature rating. AD8643ARZ and AD8643ARZ-REEL7 operate from -40°C to 125°C. AD8643TRZ-EP and AD8643TRZ-EP-R7 operate from -55°C to 125°C, matching the TLC2274AMDREP temperature range. Packaging differs: ARZ variants use Tube or Cut Tape & Digi-Reel®; TRZ-EP variants use Tube or Tape & Reel.

Q: Why is the input offset voltage lower in AD8643 parts compared to TLC2274AMDREP?

A: The AD8643 uses J-FET input stage technology, which inherently provides lower input offset voltage (50–70 µV) compared to the general-purpose CMOS input stage of the TLC2274AMDREP (300 µV). This is a performance advantage for precision analog applications.

Q: Is the lower output current of AD8643 (12 mA vs. 50 mA) a limitation?

A: Output current capability depends on application requirements. If the circuit design requires output currents exceeding 12 mA per channel, the AD8643 substitute is not suitable. The TLC2274AMDREP must be used or an external buffer amplifier must be added to the AD8643 design.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (AD8643ARZ, AD8643ARZ-REEL7, AD8643TRZ-EP, AD8643TRZ-EP-R7) are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity), matching the compliance status of the TLC2274AMDREP.

Q: Which substitute part should I select for applications requiring -55°C operation?

A: Only AD8643TRZ-EP and AD8643TRZ-EP-R7 support the -55°C to 125°C operating temperature range. AD8643ARZ and AD8643ARZ-REEL7 are limited to -40°C minimum temperature and are not suitable for applications requiring -55°C operation.

Q: What is the difference between Tape & Reel (TR) and Cut Tape & Digi-Reel® (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape in reel format, suitable for high-volume automated assembly. Cut Tape & Digi-Reel® (CT) packaging is supplied on cut tape segments, suitable for lower-volume or mixed-component assembly. Both formats contain the same component; packaging selection depends on assembly process requirements and order quantities.

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