TLC27M4IN Equivalent & Substitute Parts

Part Overview

The TLC27M4IN 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 is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory. The TLC27M4IN operates across a wide supply voltage range of 4V to 16V and is suitable for applications requiring low-power, general-purpose amplification in through-hole mounting configurations. Due to its Last Time Buy status, identifying equivalent substitute parts is essential for design continuity and long-term component availability.

Substiute Parts

TLC27M4IN

Texas InstrumentsIn Stock: 2611TLC27M4IN Datasheet

Current PartRFQ

TLC27M4IDR

Texas InstrumentsIn Stock: 5436TLC27M4IDR Datasheet

MFR RecommendedRFQ

NJU7024D#

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC27M4IN is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Number of circuits (must be 4)
• Slew rate (0.62 V/µs)
• Gain bandwidth product (525 kHz)
• Input bias current (0.7 pA)
• Input offset voltage (1.1 mV)
• Supply current per channel (570 µA across 4 channels)
• Output current per channel (30 mA)
• Supply voltage range (4V to 16V minimum, 16V maximum)
• Operating temperature range (-40°C to 85°C)

Mechanical Compatibility Criteria:

• Package type and pin count (14-pin configuration)
• Mounting technology (through-hole or surface-mount equivalents)
• Physical dimensions and pin spacing

The TLC27M4IN has two identified substitutes: the TLC27M4IDR (surface-mount variant) and the NJU7024D# (alternative manufacturer). The TLC27M4IDR maintains identical electrical specifications but differs in packaging format (14-SOIC surface-mount versus 14-DIP through-hole). The NJU7024D# offers functional equivalence with modified electrical characteristics suitable for applications with relaxed performance requirements.

Parameter Comparison

Engineering Selection Recommendations

TLC27M4IDR Selection: The TLC27M4IDR is the primary recommended substitute when design migration to surface-mount technology is feasible. This part maintains identical electrical specifications to the TLC27M4IN, including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and operating temperature range. Both devices are ROHS3 compliant and manufactured by Texas Instruments. The TLC27M4IDR carries Active product status with higher inventory availability (5400 pcs) compared to the Last Time Buy TLC27M4IN (2548 pcs). The only substantive difference is the package format: 14-SOIC surface-mount versus 14-DIP through-hole. PCB layout redesign is required for this substitution.

NJU7024D# Selection: The NJU7024D# is suitable for applications where through-hole mounting must be retained and relaxed electrical performance is acceptable. This device maintains the 14-DIP package format and through-hole mounting technology of the TLC27M4IN. However, the NJU7024D# exhibits reduced slew rate (0.4 V/µs versus 0.62 V/µs), lower gain bandwidth product (400 kHz versus 525 kHz), higher input offset voltage (10 mV versus 1.1 mV), and significantly lower supply current (150 µA versus 570 µA). The NJU7024D# supports a lower minimum supply voltage (3V versus 4V) and operates across a narrower temperature range (-20°C to 75°C versus -40°C to 85°C). This substitute is appropriate for non-critical applications where performance degradation is tolerable and power consumption reduction is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the TLC27M4IDR be used as a direct replacement for the TLC27M4IN without circuit modification?

A: The TLC27M4IDR provides electrical equivalence but requires PCB layout redesign due to package format differences. The TLC27M4IN uses a 14-DIP through-hole package, while the TLC27M4IDR uses a 14-SOIC surface-mount package. Pin functionality and electrical specifications are identical, but physical placement and soldering methods differ. Schematic compatibility is complete; layout compatibility requires redesign.

Q: What are the performance implications of substituting the NJU7024D# for the TLC27M4IN?

A: The NJU7024D# introduces measurable performance changes. Slew rate decreases by 35% (0.4 V/µs versus 0.62 V/µs), gain bandwidth product decreases by 24% (400 kHz versus 525 kHz), and input offset voltage increases by 809% (10 mV versus 1.1 mV). Supply current decreases by 74% (150 µA versus 570 µA). These changes are acceptable for low-frequency, non-precision applications but unsuitable for high-speed or precision signal conditioning circuits.

Q: Are both substitute parts RoHS compliant?

A: Yes. The TLC27M4IDR is ROHS3 compliant, matching the TLC27M4IN specification. The NJU7024D# is RoHS compliant. Both devices meet regulatory requirements for hazardous substance restrictions.

Q: What is the temperature operating range difference between the NJU7024D# and the TLC27M4IN?

A: The TLC27M4IN operates from -40°C to 85°C, while the NJU7024D# operates from -20°C to 75°C. The NJU7024D# has a narrower temperature range, with 20°C reduction at both the lower and upper limits. Applications requiring operation below -20°C or above 75°C must use the TLC27M4IN or TLC27M4IDR.

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

A: For new designs, the TLC27M4IDR is the preferred substitute. It maintains complete electrical equivalence to the TLC27M4IN, carries Active product status ensuring long-term availability, and offers higher inventory levels. Surface-mount technology is standard in modern PCB design. The NJU7024D# should be selected only when through-hole mounting is mandatory and performance degradation is acceptable.

Q: Is the supply voltage range compatible across all three parts?

A: The TLC27M4IN and TLC27M4IDR both require 4V to 16V supply voltage. The NJU7024D# accepts 3V to 16V, providing a lower minimum threshold. All three parts support the standard 16V maximum. Circuits designed for 4V to 16V operation are compatible with all three devices; circuits operating below 4V require the NJU7024D#.