TLC1079IN Equivalent & Substitute Parts

Part Overview

The TLC1079IN is a CMOS amplifier integrated circuit manufactured by Texas Instruments, configured as a 4-circuit operational amplifier in a 14-DIP through-hole package. This device operates across a supply voltage range of 3V to 16V and is specified for operating temperatures from -40°C to 85°C. The TLC1079IN carries a Last Time Buy product status, indicating that this component is no longer in active production. Identifying equivalent and substitute parts is necessary to ensure continued design flexibility, procurement availability, and long-term system reliability for applications currently utilizing this device.

Substiute Parts

TLC1079IN

Texas InstrumentsIn Stock: 1102TLC1079IN Datasheet

Current PartRFQ

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 TLC1079IN is determined by the following critical parameters: amplifier type (CMOS), number of circuits (4), package type (14-DIP through-hole), supply voltage range compatibility (3V to 16V minimum), and operating temperature range coverage (-40°C to 85°C minimum).

The TLC1079IN is classified as a CMOS amplifier with ultra-low input bias current (1 pA) and low supply current consumption (29 µA across 4 channels). Substitute parts must maintain these core characteristics to ensure functional equivalence in low-power, high-impedance input applications.

Two substitute parts are identified based on these criteria:

1. NJU7024D# — CMOS amplifier, 4 circuits, 14-DIP package, matching supply voltage range and operating temperature requirements
2. NJM13403D1 — General-purpose amplifier, 4 circuits, 14-DIP package, with extended lower supply voltage limit (2V) and matching operating temperature range

Parameter Comparison

Engineering Selection Recommendations

NJU7024D# is the closest functional equivalent to the TLC1079IN. Both devices are CMOS amplifiers with identical input bias current (1 pA), matching supply voltage range (3V to 16V), and identical package configuration (14-DIP through-hole). The NJU7024D# maintains active product status and RoHS compliance. However, the operating temperature range of the NJU7024D# (-20°C to 75°C) is narrower than the TLC1079IN (-40°C to 85°C), which may limit suitability for applications requiring extended low-temperature or high-temperature operation.

NJM13403D1 is a general-purpose amplifier substitute with active product status and RoHS compliance. This device accommodates a lower minimum supply voltage (2V) and maintains the full operating temperature range (-40°C to 85°C) of the TLC1079IN. However, the NJM13403D1 exhibits significantly higher input bias current (25 nA) and higher supply current consumption (3 mA), making it unsuitable for applications where ultra-low input bias current and minimal power consumption are design requirements.

Selection between these substitutes depends on application-specific requirements: choose NJU7024D# for CMOS-specific performance characteristics and low power consumption within the -20°C to 75°C temperature window; choose NJM13403D1 for extended temperature range coverage and lower minimum supply voltage tolerance.

Frequently Asked Questions (FAQ)

Q: Can the NJU7024D# directly replace the TLC1079IN in all applications?

A: The NJU7024D# is mechanically and electrically compatible in terms of package type, pin configuration, and supply voltage range. However, the operating temperature range differs: NJU7024D# operates from -20°C to 75°C, while TLC1079IN operates from -40°C to 85°C. Applications requiring operation below -20°C or above 75°C require evaluation of alternative substitutes or design modification.

Q: What is the primary difference between the NJU7024D# and NJM13403D1 substitutes?

A: The NJU7024D# is a CMOS amplifier with 1 pA input bias current and 150 µA supply current, optimized for low-power, high-impedance input applications. The NJM13403D1 is a general-purpose amplifier with 25 nA input bias current and 3 mA supply current, optimized for general-purpose signal conditioning. The choice depends on whether ultra-low input bias current and minimal power consumption are critical design parameters.

Q: Are all three devices (TLC1079IN, NJU7024D#, NJM13403D1) pin-compatible?

A: Yes. All three devices are configured as 4-circuit amplifiers in 14-DIP through-hole packages with identical pin assignments. Physical and electrical pin compatibility is confirmed across all three part numbers.

Q: What is the significance of the TLC1079IN Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TLC1079IN. Existing inventory may be available from authorized distributors, but long-term procurement cannot be guaranteed. Designs currently using the TLC1079IN should evaluate and qualify substitute parts to ensure future component availability and supply chain continuity.

Q: Do all substitute parts meet the same compliance standards as the TLC1079IN?

A: The TLC1079IN is ROHS3 Compliant. Both NJU7024D# and NJM13403D1 are RoHS Compliant. All three devices are REACH Unaffected and carry ECCN classification EAR99. Compliance status is equivalent across all three parts for regulatory purposes.

Q: Which substitute is recommended for battery-powered applications?

A: The NJU7024D# is recommended for battery-powered applications due to its significantly lower supply current consumption (150 µA across 4 channels) compared to the NJM13403D1 (3 mA). The NJU7024D# also maintains the ultra-low input bias current (1 pA) characteristic of the original TLC1079IN, making it suitable for high-impedance sensor interfaces common in portable instrumentation.