TLC27M4ACN Equivalent & Substitute Parts

Part Overview

The TLC27M4ACN 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 inventory availability. The TLC27M4ACN operates across a wide supply voltage range of 3V 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 with compatible electrical and mechanical specifications is essential for design continuity and long-term component sourcing.

Substiute Parts

TLC27M4ACN

Texas InstrumentsIn Stock: 2261TLC27M4ACN Datasheet

Current PartRFQ

TLC27M4ACDR

Texas InstrumentsIn Stock: 3941TLC27M4ACDR Datasheet

MFR RecommendedRFQ

NJU7024D#

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC27M4ACN are identified based on strict electrical and mechanical compatibility criteria. The substitution logic is governed by the following parameters:

Primary Substitution Criteria:

• Number of circuits: Must equal 4
• Amplifier type: General purpose or CMOS amplifier
• Supply voltage range: Minimum 3V, maximum 16V
• Operating temperature range: Must encompass or match 0°C ~ 70°C
• RoHS compliance: ROHS3 or equivalent compliance required

Secondary Compatibility Factors:

• Slew rate and gain bandwidth product determine signal processing capability
• Input bias current and input offset voltage affect precision applications
• Output current per channel must support load requirements
• Package type determines mounting compatibility (through-hole vs. surface mount)

Two substitute parts meet these criteria with different packaging configurations:

1. TLC27M4ACDR - Surface mount variant (14-SOIC) with identical electrical specifications and Active product status
2. NJU7024D# - Through-hole variant (14-DIP) with modified electrical characteristics and Active product status

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs (Direct Package Replacement):

The NJU7024D# is the appropriate substitute when through-hole mounting is required. This part maintains the 14-DIP package format identical to the TLC27M4ACN, enabling direct socket compatibility. The NJU7024D# carries Active product status, ensuring long-term availability and supply chain stability. Both parts are RoHS compliant and operate within the 3V to 16V supply range. The NJU7024D# offers an extended operating temperature range (-20°C to 75°C) compared to the TLC27M4ACN (0°C to 70°C), providing additional thermal margin for certain applications.

Electrical Performance Considerations:

The NJU7024D# exhibits reduced slew rate (0.4V/µs vs. 0.62V/µs) and lower gain bandwidth product (400 kHz vs. 525 kHz), resulting in slower signal response characteristics. The input offset voltage is significantly higher (10 mV vs. 900 µV), which may impact precision analog applications. Supply current consumption is substantially lower (150 µA vs. 570 µA), offering power efficiency advantages. These electrical differences require circuit validation before implementation in performance-critical applications.

For Surface Mount PCB Designs:

The TLC27M4ACDR provides an electrically identical substitute with Active product status and ROHS3 compliance. This part maintains all electrical specifications of the TLC27M4ACN while offering surface-mount packaging (14-SOIC). The TLC27M4ACDR is suitable for new designs or PCB redesigns incorporating surface-mount technology.

Compliance and Availability:

Both substitute parts maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements equivalent to the original TLC27M4ACN. The Active product status of both substitutes ensures continued manufacturing and distribution support.

Frequently Asked Questions (FAQ)

Q: Can the TLC27M4ACDR be used as a direct replacement for the TLC27M4ACN in existing through-hole designs?

A: No. The TLC27M4ACDR uses 14-SOIC surface-mount packaging, which is physically incompatible with through-hole PCB footprints designed for the 14-DIP package. PCB redesign is required to accommodate surface-mount components.

Q: What are the key electrical differences between the TLC27M4ACN and NJU7024D#?

A: The NJU7024D# has lower slew rate (0.4V/µs vs. 0.62V/µs), reduced gain bandwidth product (400 kHz vs. 525 kHz), higher input offset voltage (10 mV vs. 900 µV), and significantly lower supply current (150 µA vs. 570 µA). These differences affect signal processing speed and precision. Circuit performance validation is required before substitution in existing designs.

Q: Is the NJU7024D# suitable for precision analog applications requiring low input offset voltage?

A: The NJU7024D# input offset voltage of 10 mV is approximately 11 times higher than the TLC27M4ACN specification of 900 µV. Applications with strict input offset voltage requirements may not be compatible with this substitute without circuit redesign or offset compensation techniques.

Q: Why is the TLC27M4ACN marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part. Existing inventory is available for purchase, but no future manufacturing is planned. Identifying and qualifying substitute parts ensures design continuity after inventory depletion.

Q: Are both substitute parts RoHS compliant?

A: Yes. The TLC27M4ACDR is ROHS3 compliant, and the NJU7024D# is RoHS compliant. Both meet regulatory requirements for hazardous substance restrictions.

Q: What is the primary advantage of the NJU7024D# over the TLC27M4ACN?

A: The NJU7024D# offers significantly lower supply current consumption (150 µA vs. 570 µA) and an extended operating temperature range (-20°C to 75°C vs. 0°C to 70°C), providing power efficiency and thermal margin benefits for battery-powered or temperature-sensitive applications.

Q: Can the TLC27M4ACDR be used in designs requiring through-hole mounting?

A: No. The TLC27M4ACDR is a surface-mount component with 14-SOIC packaging. Through-hole mounting requires components with DIP or similar through-hole package formats. The NJU7024D# is the appropriate through-hole substitute.

Q: What inventory status should be considered when selecting a substitute?

A: The TLC27M4ACN has 2200 pieces in stock with Last Time Buy status. The TLC27M4ACDR has 3900 pieces in stock with Active status. The NJU7024D# has 652 pieces in stock with Active status. For long-term production requirements, Active status parts provide superior supply chain reliability.