TLC274BCN Equivalent & Substitute Parts

Part Overview

The TLC274BCN is a general-purpose operational amplifier featuring four independent circuits in a 14-pin DIP package. Manufactured by Texas Instruments, this device operates across a 3V to 16V supply range with a slew rate of 3.6V/µs and gain bandwidth product of 2.2 MHz. The TLC274BCN is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for design continuity, long-term sourcing strategy, and production planning when original inventory becomes unavailable.

Substiute Parts

TLC274BCN

Texas InstrumentsIn Stock: 2975TLC274BCN Datasheet

Current PartRFQ

TLC274BCDR

Texas InstrumentsIn Stock: 20259TLC274BCDR 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 eligibility for the TLC274BCN is determined by the following critical parameters: amplifier type (general purpose), number of circuits (4), supply voltage range compatibility (3V to 16V minimum), and package form factor. Two substitution categories are identified:

Category 1: Package Form Factor Substitutes (Same Electrical Characteristics, Different Mounting) The TLC274BCDR maintains identical electrical specifications to the TLC274BCN but differs in packaging and mounting technology. Both are Texas Instruments products with the same base product number (TLC274), ensuring design compatibility at the circuit level.

Category 2: Functional Equivalents (Different Electrical Characteristics, Same Package) The NJM13403D1 and NJU7024D# are functionally equivalent four-circuit operational amplifiers in 14-DIP packages. These devices operate within overlapping supply voltage ranges and maintain the same pin configuration. However, electrical performance parameters differ, requiring circuit-level evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

TLC274BCDR Selection Criteria: The TLC274BCDR is the primary substitute when design migration to surface-mount technology is feasible. This part maintains identical electrical performance (3.6V/µs slew rate, 2.2 MHz gain bandwidth product, 0.6 pA input bias current) and is manufactured by the same supplier (Texas Instruments). The TLC274BCDR carries Active product status with higher inventory availability (20,200 units) compared to the original TLC274BCN (2,961 units). Both parts are ROHS3 Compliant and share the same base product number, ensuring design compatibility. The transition from 14-DIP through-hole to 14-SOIC surface-mount packaging requires PCB redesign and assembly process modification.

NJM13403D1 Selection Criteria: The NJM13403D1 is suitable for applications where through-hole mounting must be retained and extended operating temperature range (-40°C to 85°C) is required. This part maintains four independent circuits in a 14-DIP package with compatible supply voltage range (2V to 14V). Performance differences include reduced slew rate (1.2V/µs versus 3.6V/µs) and lower gain bandwidth product (2 MHz versus 2.2 MHz). Input bias current is higher (25 nA versus 0.6 pA), and input offset voltage is increased (500 µV versus 340 µV). Output current per channel is slightly higher (35 mA versus 30 mA). The NJM13403D1 is Active status with RoHS compliance.

NJU7024D# Selection Criteria: The NJU7024D# is a CMOS amplifier variant suitable only for applications with relaxed bandwidth and slew rate requirements. This part offers significantly lower supply current (150 µA versus 2.7 mA), making it appropriate for battery-powered or ultra-low-power designs. The NJU7024D# exhibits substantially reduced performance: slew rate of 0.4V/µs, gain bandwidth product of 400 kHz, and input offset voltage of 10 mV. Operating temperature range is -20°C to 75°C. This part is not recommended as a direct substitute for general-purpose applications requiring the original TLC274BCN performance specifications.

Frequently Asked Questions (FAQ)

Q1: Can the TLC274BCDR directly replace the TLC274BCN in existing PCB designs?

A: The TLC274BCDR cannot be used in existing TLC274BCN PCB designs without modification. While electrical specifications are identical, the TLC274BCDR uses 14-SOIC surface-mount packaging (0.154" width, 3.90mm) versus the TLC274BCN's 14-DIP through-hole package (0.300" width, 7.62mm). PCB layout redesign and assembly process changes are required. The TLC274BCDR is suitable for new designs or PCB revisions incorporating surface-mount technology.

Q2: What are the key performance differences between TLC274BCN and NJM13403D1?

A: The NJM13403D1 maintains the same four-circuit configuration and 14-DIP package but exhibits lower performance specifications. Slew rate is reduced from 3.6V/µs to 1.2V/µs, gain bandwidth product decreases from 2.2 MHz to 2 MHz, and input bias current increases from 0.6 pA to 25 nA. Input offset voltage increases from 340 µV to 500 µV. The NJM13403D1 offers extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and higher output current capability (35 mA versus 30 mA per channel). Supply voltage range is slightly narrower (2V to 14V versus 3V to 16V).

Q3: Is the NJU7024D# suitable as a general-purpose replacement for the TLC274BCN?

A: The NJU7024D# is not recommended as a general-purpose replacement. Although it provides four circuits in a 14-DIP package, it is a CMOS amplifier with significantly degraded performance: 0.4V/µs slew rate (versus 3.6V/µs), 400 kHz gain bandwidth product (versus 2.2 MHz), and 10 mV input offset voltage (versus 340 µV). The primary advantage is ultra-low supply current (150 µA versus 2.7 mA), making it suitable only for specialized low-power applications where bandwidth and slew rate requirements are minimal.

Q4: What compliance certifications apply to all substitute parts?

A: All substitute parts (TLC274BCDR, NJM13403D1, NJU7024D#) are RoHS compliant. The TLC274BCN and TLC274BCDR are ROHS3 Compliant. All parts are REACH Unaffected and classified as EAR99 for export control purposes. HTSUS classification is 8542.33.0001 for all parts.

Q5: Which substitute part offers the best inventory availability?

A: The TLC274BCDR offers the highest inventory availability with 20,200 units in stock, compared to NJM13403D1 (827 units) and NJU7024D# (652 units). The original TLC274BCN has 2,961 units available but is classified as Last Time Buy, indicating no future production.

Q6: Can the NJM13403D1 operate at the maximum supply voltage of the TLC274BCN?

A: The NJM13403D1 has a maximum supply voltage of 14V, which is below the TLC274BCN's maximum of 16V. Applications requiring operation at 15V or 16V cannot use the NJM13403D1 as a substitute. The TLC274BCDR maintains the full 3V to 16V supply range of the original part.