TLC274ACN Equivalent & Substitute Parts

Part Overview

The TLC274ACN is a general-purpose operational amplifier featuring four independent circuits in a 14-pin DIP package. Manufactured by Texas Instruments, this device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TLC274ACN operates across a supply voltage range of 3V to 16V with an operating temperature range of 0°C to 70°C, making it suitable for general-purpose analog signal processing applications. Due to its Last Time Buy status, identifying equivalent and substitute parts is essential for design continuity and long-term component sourcing.

Substiute Parts

TLC274ACN

Texas InstrumentsIn Stock: 4247TLC274ACN Datasheet

Current PartRFQ

TLC274ACDR

Texas InstrumentsIn Stock: 16305TLC274ACDR Datasheet

MFR RecommendedRFQ

NJM13403D1

Nisshinbo Micro Devices Inc.In Stock: 873NJM13403D1 Datasheet

MFR RecommendedRFQ

NJU7024D#

Nisshinbo Micro Devices Inc.In Stock: 715NJU7024D# Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC274ACN is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Electrical Compatibility Parameters:

• Amplifier type classification (General Purpose or CMOS)
• Number of circuits (4 independent amplifiers)
• Supply voltage range (minimum 3V, maximum 16V)
• Slew rate and gain bandwidth product
• Input bias current and input offset voltage
• Output current capability per channel

Mechanical Compatibility Parameters:

• Package type (14-DIP for through-hole mounting)
• Pin count and pinout configuration
• Physical dimensions (0.300", 7.62mm width)

Compliance and Status Parameters:

• RoHS compliance status
• Product status (Active vs. Last Time Buy)
• Inventory availability

The substitute parts are grouped into two categories based on these criteria:

Category 1: Direct Package Equivalent (Surface Mount Alternative)

• TLC274ACDR: Identical electrical specifications, alternative surface-mount packaging (14-SOIC)

Category 2: Through-Hole Package Equivalents (Electrical Variations)

• NJM13403D1: Through-hole DIP package, general-purpose amplifier, minor electrical parameter variations
• NJU7024D#: Through-hole DIP package, CMOS amplifier type, significantly different electrical characteristics

Parameter Comparison

Engineering Selection Recommendations

For Direct Electrical and Functional Replacement (Recommended Primary Substitute):

The TLC274ACDR is the manufacturer-recommended substitute for the TLC274ACN. Both parts share 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 TLC274ACDR maintains the same supply voltage range (3V to 16V) and output current capability (30 mA per channel). The primary difference is packaging: TLC274ACDR uses 14-SOIC surface-mount packaging versus the 14-DIP through-hole package of the TLC274ACN. This substitute is suitable only for designs that can accommodate surface-mount assembly. The TLC274ACDR holds Active product status with significantly higher inventory availability (16,291 pieces), ensuring long-term sourcing reliability.

For Through-Hole Package Retention:

If through-hole mounting is mandatory, two alternatives exist with different electrical characteristics:

The NJM13403D1 maintains general-purpose amplifier classification with four circuits in 14-DIP packaging. It exhibits lower slew rate (1.2V/µs) and gain bandwidth product (2 MHz) compared to the TLC274ACN, but offers improved input offset voltage (500 µV) and extended operating temperature range (-40°C to 85°C). Supply voltage range is slightly reduced (2V to 14V maximum). This part is suitable for applications where the reduced bandwidth is acceptable and extended temperature operation is beneficial.

The NJU7024D# is a CMOS amplifier variant in 14-DIP packaging with significantly different electrical characteristics: slew rate of 0.4V/µs, gain bandwidth product of 400 kHz, and substantially lower supply current (150 µA). Input offset voltage is substantially higher (10 mV). This part is suitable only for low-frequency, low-power applications where the reduced performance is acceptable.

Compliance Considerations:

All substitute parts maintain RoHS compliance. The TLC274ACDR and TLC274ACN both carry ROHS3 Compliant status, while NJM13403D1 and NJU7024D# carry RoHS Compliant status. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can the TLC274ACDR directly replace the TLC274ACN in an existing PCB design?

A: The TLC274ACDR cannot be directly installed in a PCB designed for the TLC274ACN due to different package types. The TLC274ACN uses 14-DIP through-hole packaging, while the TLC274ACDR uses 14-SOIC surface-mount packaging. PCB redesign is required to accommodate the different pin layout and mounting method. However, the electrical specifications are identical, so circuit functionality remains unchanged after PCB modification.

Q: What are the key electrical differences between the TLC274ACN and NJM13403D1?

A: Both parts are general-purpose four-circuit amplifiers in 14-DIP packages, but differ in performance specifications. The TLC274ACN has higher slew rate (3.6V/µs vs. 1.2V/µs) and gain bandwidth product (2.2 MHz vs. 2 MHz). The NJM13403D1 offers lower input offset voltage (500 µV vs. 900 µV) and extended operating temperature range (-40°C to 85°C vs. 0°C to 70°C). Supply current is slightly higher for the NJM13403D1 (3 mA vs. 2.7 mA). Selection depends on whether bandwidth or temperature range is the priority.

Q: Is the NJU7024D# suitable as a substitute for the TLC274ACN?

A: The NJU7024D# is not recommended as a general substitute for the TLC274ACN. While both are four-circuit amplifiers in 14-DIP packages, the NJU7024D# is a CMOS amplifier with significantly reduced performance: slew rate of 0.4V/µs (versus 3.6V/µs), gain bandwidth product of 400 kHz (versus 2.2 MHz), and input offset voltage of 10 mV (versus 900 µV). The NJU7024D# is suitable only for low-frequency, low-power applications where these reduced specifications are acceptable.

Q: Why is the TLC274ACN marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TLC274ACN. Current inventory of 4,200 pieces represents the final available stock. Once depleted, the part will no longer be available from the manufacturer. This status necessitates identifying and qualifying substitute parts for future production requirements.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: ROHS3 Compliant indicates compliance with the third iteration of the Restriction of Hazardous Substances directive, which includes additional restricted substances beyond the original RoHS standard. ROHS3 Compliant is a more stringent certification. Both the TLC274ACN and TLC274ACDR carry ROHS3 Compliant status, while the NJM13403D1 and NJU7024D# carry the earlier RoHS Compliant designation. For new designs, ROHS3 Compliant parts are preferred.

Q: Can I use the TLC274ACDR in a design that requires through-hole mounting?

A: No. The TLC274ACDR uses 14-SOIC surface-mount packaging and cannot be installed in through-hole PCB footprints designed for the 14-DIP TLC274ACN. If surface-mount assembly is not feasible, the NJM13403D1 or NJU7024D# in 14-DIP packaging must be used instead, with appropriate circuit design adjustments for their different electrical specifications.

Q: What is the inventory status of each substitute part?

A: TLC274ACDR has 16,291 pieces in stock (Active status), NJM13403D1 has 827 pieces in stock (Active status), and NJU7024D# has 652 pieces in stock (Active status). The TLC274ACN has 4,200 pieces remaining (Last Time Buy status). The TLC274ACDR offers the best long-term availability due to its Active product status and significantly higher inventory level.