TLC274AIN Equivalent & Substitute Parts

Part Overview

The TLC274AIN is a general-purpose operational amplifier featuring four independent circuits in a 14-DIP through-hole package, manufactured by Texas Instruments. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TLC274AIN operates across a wide supply voltage range of 4V to 16V and is suitable for applications requiring low input bias current and moderate bandwidth performance. Due to its Last Time Buy status, identifying equivalent and substitute parts is essential for design continuity and long-term component sourcing.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	3.6	V/µs
Gain Bandwidth Product	2.2	MHz
Current - Input Bias	0.6	pA
Voltage - Input Offset	900	µV
Current - Supply (x4 Channels)	2.7	mA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	14-DIP (0.300", 7.62mm)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TLC274AIN is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of circuits: 4 independent amplifier circuits required
Amplifier type: General Purpose operational amplifier
Supply voltage range: Minimum 4V, Maximum 16V
Operating temperature range: -40°C to 85°C
Package compatibility: Through-hole or surface-mount variants of the same base product family

Secondary Compatibility Factors:

Slew rate: 3.6V/µs or higher
Gain bandwidth product: 2.2 MHz or higher
Input bias current: 0.6 pA or lower
Input offset voltage: 900 µV or lower
Output current per channel: 30 mA or higher
Supply current: 2.7 mA or lower

Substitutes are grouped into two categories: direct package equivalents (14-DIP through-hole) and alternative package variants (14-SOIC surface-mount) that maintain electrical compatibility within the specified parameter ranges.

Parameter Comparison

Parameter	TLC274AIN (Main)	TLC274AIDR	NJM13403D1	NJU7024D#
Manufacturer	Texas Instruments	Texas Instruments	Nisshinbo Micro Devices	Nisshinbo Micro Devices
Number of Circuits	4	4	4	4
Amplifier Type	General Purpose	General Purpose	General Purpose	CMOS
Slew Rate (V/µs)	3.6	3.6	1.2	0.4
Gain Bandwidth Product (MHz)	2.2	2.2	2.0	0.4
Current - Input Bias	0.6 pA	0.6 pA	25 nA	1 pA
Voltage - Input Offset (µV)	900	900	500	10000
Current - Supply (mA)	2.7	2.7	3.0	0.15
Current - Output / Channel (mA)	30	30	35	—
Voltage - Supply Span (Min V)	4	4	2	3
Voltage - Supply Span (Max V)	16	16	14	16
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-20 to 75
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole
Package / Case	14-DIP	14-SOIC	14-DIP	14-DIP
Product Status	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

TLC274AIDR (Texas Instruments)

The TLC274AIDR is the manufacturer-recommended direct electrical equivalent of the TLC274AIN. It maintains identical electrical specifications including slew rate (3.6V/µs), gain bandwidth product (2.2 MHz), input bias current (0.6 pA), and input offset voltage (900 µV). The primary difference is packaging: TLC274AIDR uses 14-SOIC surface-mount configuration versus the 14-DIP through-hole of the main part. This substitute is suitable for new designs or PCB redesigns accommodating surface-mount technology. Product status is Active with higher inventory availability (4340 pcs). RoHS3 compliance is maintained.

NJM13403D1 (Nisshinbo Micro Devices)

The NJM13403D1 provides through-hole 14-DIP packaging identical to the TLC274AIN, maintaining design compatibility for existing PCB layouts. Electrical performance is comparable with operating temperature range of -40°C to 85°C and supply voltage range of 2V to 14V. Notable differences include lower slew rate (1.2V/µs versus 3.6V/µs), lower gain bandwidth product (2.0 MHz versus 2.2 MHz), higher input bias current (25 nA versus 0.6 pA), and lower input offset voltage (500 µV versus 900 µV). This substitute is appropriate for applications where reduced slew rate and bandwidth are acceptable, and where lower input offset voltage provides performance advantage. Product status is Active with 827 pcs inventory.

NJU7024D# (Nisshinbo Micro Devices)

The NJU7024D# is a CMOS amplifier variant in 14-DIP through-hole packaging. This substitute exhibits significantly different electrical characteristics: slew rate of 0.4V/µs, gain bandwidth product of 400 kHz, and extremely low supply current of 150 µA. Input bias current is 1 pA and input offset voltage is 10 mV. Operating temperature range is -20°C to 75°C, which is narrower than the main part. Supply voltage range is 3V to 16V. This substitute is suitable only for low-speed, low-power applications where bandwidth and slew rate requirements are substantially reduced. Product status is Active with 652 pcs inventory.

Frequently Asked Questions (FAQ)

Q: Can TLC274AIDR be used as a direct replacement for TLC274AIN in existing designs?

A: TLC274AIDR is electrically equivalent to TLC274AIN with identical performance specifications. However, it uses 14-SOIC surface-mount packaging instead of 14-DIP through-hole packaging. Direct PCB substitution is not possible without redesign. For new designs or PCB revisions, TLC274AIDR is the recommended equivalent.

Q: What are the key differences between TLC274AIN and NJM13403D1?

A: Both devices are 4-circuit general-purpose amplifiers in 14-DIP through-hole packages with identical operating temperature range (-40°C to 85°C). TLC274AIN has higher slew rate (3.6V/µs vs 1.2V/µs) and higher gain bandwidth product (2.2 MHz vs 2.0 MHz). NJM13403D1 has lower input offset voltage (500 µV vs 900 µV) and higher output current per channel (35 mA vs 30 mA). Selection depends on application requirements for speed versus offset voltage performance.

Q: Is NJU7024D# suitable as a substitute for TLC274AIN?

A: NJU7024D# is not a suitable general substitute for TLC274AIN. While both are 4-circuit amplifiers in 14-DIP packages, NJU7024D# is a CMOS device with significantly reduced bandwidth (400 kHz vs 2.2 MHz), slew rate (0.4V/µs vs 3.6V/µs), and narrower operating temperature range (-20°C to 75°C vs -40°C to 85°C). NJU7024D# is appropriate only for low-speed, low-power applications where these reduced specifications are acceptable.

Q: What is the impact of switching from through-hole to surface-mount packaging?

A: Switching from TLC274AIN (14-DIP through-hole) to TLC274AIDR (14-SOIC surface-mount) requires PCB redesign and different assembly processes. Surface-mount technology offers reduced board space, improved high-frequency performance, and automated assembly capability. Through-hole technology provides mechanical robustness and manual rework capability. Electrical performance remains identical between these two packages.

Q: Are all substitute parts RoHS compliant?

A: Yes. TLC274AIN is ROHS3 Compliant. TLC274AIDR is ROHS3 Compliant. NJM13403D1 and NJU7024D# are RoHS Compliant. All substitutes meet RoHS requirements for hazardous substance restrictions.

Q: What supply voltage range must be maintained for compatibility?

A: TLC274AIN operates from 4V to 16V. TLC274AIDR operates from 4V to 16V. NJM13403D1 operates from 2V to 14V. NJU7024D# operates from 3V to 16V. When selecting a substitute, ensure the application supply voltage falls within the specified range of the chosen device.

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