TLC27M4BCN Equivalent & Substitute Parts

Part Overview

The TLC27M4BCN is a general-purpose operational amplifier integrated circuit manufactured by Texas Instruments, featuring four independent amplifier circuits in a 14-pin DIP package. This device operates across a wide supply voltage range of 3V to 16V and is designed for applications requiring low-power, general-purpose amplification. The part is currently in Last Time Buy status, indicating that new production has ceased and existing inventory is being cleared. Identifying equivalent and substitute parts is essential for design continuity, long-term product support, and supply chain flexibility.

Substiute Parts

TLC27M4BCN

Texas InstrumentsIn Stock: 2130TLC27M4BCN Datasheet

Current PartRFQ

TLC27M4BCDR

Texas InstrumentsIn Stock: 2271TLC27M4BCDR Datasheet

MFR RecommendedRFQ

NJU7024D#

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC27M4BCN is determined by strict alignment of electrical and mechanical parameters. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

• Number of circuits: Must equal 4
• Supply voltage range: Must span minimum 3V to maximum 16V
• Package compatibility: Through-hole or surface-mount variants of the same base design
• Amplifier classification: General-purpose or CMOS amplifier types
• Output current capability: Minimum 30 mA per channel

Substitution Categories:

Category 1: Packaging Variant (Same Electrical Specification) The TLC27M4BCDR represents a direct electrical equivalent with identical performance parameters but in a surface-mount 14-SOIC package instead of through-hole DIP. This substitution is valid when PCB layout and assembly process support surface-mount technology.

Category 2: Alternative Manufacturer (Modified Electrical Specification) The NJU7024D# from Nisshinbo Micro Devices Inc. is a CMOS amplifier with four circuits in 14-DIP packaging. While it maintains the same package form factor and supply voltage range as the TLC27M4BCN, it exhibits different electrical characteristics including lower slew rate (0.4V/µs vs. 0.62V/µs), lower gain bandwidth product (400 kHz vs. 525 kHz), and lower supply current (150µA vs. 570µA). This part is suitable only when the application tolerates these performance differences.

Parameter Comparison

Engineering Selection Recommendations

For TLC27M4BCDR Selection: The TLC27M4BCDR is the preferred substitute when design requirements permit surface-mount assembly. This part maintains identical electrical specifications to the TLC27M4BCN while offering Active product status, ensuring long-term availability and supply continuity. Both parts carry ROHS3 compliance and are manufactured by Texas Instruments under the LinCMOS™ series. Selection of this variant eliminates obsolescence risk associated with the Last Time Buy status of the original part.

For NJU7024D# Selection: The NJU7024D# is suitable only when application performance requirements accommodate the specified electrical differences. The reduced slew rate (0.4V/µs vs. 0.62V/µs) and lower gain bandwidth product (400 kHz vs. 525 kHz) limit this part to applications with relaxed frequency response requirements. The significantly higher input offset voltage (10 mV vs. 260 µV) may introduce unacceptable DC errors in precision applications. The lower supply current (150µA vs. 570µA) provides power consumption advantage in battery-powered designs. This part maintains through-hole DIP packaging identical to the TLC27M4BCN and offers extended operating temperature range (-20°C to 75°C). Product status is Active, supporting long-term availability.

Compliance Considerations: All three parts maintain REACH Unaffected status and carry EAR99 ECCN classification. RoHS compliance is confirmed for all variants, with TLC27M4BCN and TLC27M4BCDR meeting ROHS3 requirements and NJU7024D# meeting RoHS requirements.

Frequently Asked Questions (FAQ)

Q: Can TLC27M4BCDR be used as a direct replacement for TLC27M4BCN in existing through-hole PCB designs?

A: No. The TLC27M4BCDR uses 14-SOIC surface-mount packaging (0.154" width) while the TLC27M4BCN uses 14-DIP through-hole packaging (0.300" width). PCB layout and assembly process modifications are required. However, electrical specifications are identical, making this a valid functional substitute when PCB redesign is feasible.

Q: What are the key electrical differences between TLC27M4BCN and NJU7024D#?

A: The NJU7024D# exhibits three significant electrical differences: slew rate is reduced from 0.62V/µs to 0.4V/µs, gain bandwidth product is reduced from 525 kHz to 400 kHz, and input offset voltage is substantially higher at 10 mV compared to 260 µV. Supply current is lower at 150µA versus 570µA. These differences restrict NJU7024D# use to applications tolerating reduced frequency response and higher DC offset.

Q: Are all three parts pin-compatible?

A: TLC27M4BCN and NJU7024D# share identical 14-DIP through-hole packaging and are pin-compatible. The TLC27M4BCDR uses 14-SOIC surface-mount packaging and is not pin-compatible with either DIP variant, requiring PCB redesign for implementation.

Q: Why is TLC27M4BCN listed as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued new production of this part. Existing inventory is being cleared, and no future manufacturing is planned. This status necessitates identification of substitute parts for design continuity and long-term product support.

Q: Which substitute part should be selected for new designs?

A: For new designs, TLC27M4BCDR is the recommended choice. It maintains identical electrical performance to TLC27M4BCN, carries Active product status ensuring long-term availability, and is manufactured by the same supplier under the same LinCMOS™ series. Surface-mount packaging aligns with modern PCB assembly practices.

Q: Can NJU7024D# be used in precision analog applications?

A: NJU7024D# is not suitable for precision applications requiring low input offset voltage. The 10 mV input offset voltage is approximately 38 times higher than the TLC27M4BCN specification of 260 µV, introducing significant DC errors that cannot be easily compensated in many circuit topologies.

Q: What is the temperature operating range difference between these parts?

A: TLC27M4BCN and TLC27M4BCDR both operate from 0°C to 70°C. NJU7024D# offers extended range from -20°C to 75°C, providing 20°C additional low-temperature capability and 5°C additional high-temperature capability. This extended range may be advantageous for industrial or automotive applications.

Q: Are all parts RoHS compliant?

A: Yes. TLC27M4BCN and TLC27M4BCDR meet ROHS3 compliance requirements. NJU7024D# meets RoHS compliance requirements. All three parts are REACH Unaffected and carry EAR99 ECCN classification.