TLC374ID Equivalent & Substitute Parts

Part Overview

The TLC374ID is a 4-channel differential comparator IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This device features CMOS, MOS, open-drain, and TTL output configurations suitable for precision voltage comparison applications. The TLC374ID is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives from both Texas Instruments and STMicroelectronics maintain functional and electrical compatibility while offering improved availability and extended product lifecycles.

Substiute Parts

TLC374ID

Texas InstrumentsIn Stock: 3372TLC374ID Datasheet

Current PartRFQ

TLC374IDR

Texas InstrumentsIn Stock: 2420TLC374IDR Datasheet

MFR RecommendedRFQ

TS374IDT

STMicroelectronicsIn Stock: 7898TS374IDT Datasheet

DirectRFQ

TS339CDT

STMicroelectronicsIn Stock: 5517TS339CDT Datasheet

MFR RecommendedRFQ

TS339IDT

STMicroelectronicsIn Stock: 15817TS339IDT Datasheet

MFR RecommendedRFQ

TS374CDT

STMicroelectronicsIn Stock: 10018TS374CDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC374ID are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• 4-channel comparator configuration
• Differential comparator type
• CMOS, MOS, open-drain, TTL output capability
• Supply voltage range: 3V ~ 16V single supply or ±1.5V ~ 8V dual supply
• 14-SOIC package footprint compatibility
• Surface mount mounting type
• Input offset voltage specification ≤ 10mV @ 5V
• Input bias current ≤ 5pA @ 5V
• Output current capability ≥ 20mA typical

Acceptable Parameter Variations:

• Quiescent current up to 250µA (TLC374ID: 800µA max)
• Operating temperature range extensions to -40°C ~ 125°C
• Input offset voltage up to 10mV @ 5V for differential comparators

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended): TLC374IDR is the manufacturer-recommended direct replacement for TLC374ID. This part maintains identical electrical specifications, supply voltage range, and operating temperature range while offering active product status and improved availability. Both parts are ROHS3 compliant and carry identical REACH and ECCN classifications.

Tier 2 - Functional Equivalent (Differential Comparators): TS374IDT and TS374CDT from STMicroelectronics provide differential comparator functionality with identical supply voltage ranges and output current specifications. These parts feature improved quiescent current performance (250µA vs 800µA) and lower input bias current (1pA vs 5pA). TS374IDT supports extended operating temperature range (-40°C ~ 125°C) matching industrial requirements. Input offset voltage specification is 10mV @ 5V, within acceptable tolerance for differential comparator applications.

Tier 3 - General Purpose Alternative (Functional Compromise): TS339IDT and TS339CDT are general purpose comparators with 4-channel configuration and CMOS/open-drain output. These parts offer superior quiescent current performance (25µA) and extended supply voltage range (2.7V minimum). Operating temperature range varies: TS339IDT supports -40°C ~ 125°C while TS339CDT is rated 0°C ~ 70°C. Selection depends on application temperature requirements and whether differential comparator functionality is mandatory.

All substitute parts maintain 14-SOIC surface mount package compatibility, ROHS3 compliance, and identical HTSUS classification.

Frequently Asked Questions (FAQ)

Q: Can TLC374IDR directly replace TLC374ID without circuit modification? A: Yes. TLC374IDR is the manufacturer-recommended direct replacement with identical electrical specifications, supply voltage range, operating temperature, and 14-SOIC package. No circuit modifications are required.

Q: What are the key differences between TS374IDT and TLC374IDR? A: Both maintain differential comparator functionality and identical supply voltage ranges. TS374IDT features lower input bias current (1pA vs 5pA), reduced quiescent current (250µA vs 800µA), and extended operating temperature range (-40°C ~ 125°C vs -40°C ~ 85°C). Input offset voltage is 10mV @ 5V compared to 5mV @ 5V for TLC374IDR. These differences are within acceptable tolerance for most applications.

Q: Are TS339IDT and TS339CDT suitable replacements for differential comparator applications? A: TS339IDT and TS339CDT are general purpose comparators, not differential comparators. While they provide 4-channel configuration and compatible output types, they are classified as general purpose rather than differential. Selection depends on whether the application requires differential input stage functionality. These parts offer superior quiescent current performance (25µA) if general purpose operation is acceptable.

Q: What is the difference between TS374IDT and TS374CDT? A: Both parts are STMicroelectronics TS374 differential comparators with identical electrical specifications. The primary difference is operating temperature range: TS374IDT supports -40°C ~ 125°C while TS374CDT is rated 0°C ~ 70°C. Packaging differs: TS374IDT uses Cut Tape & Digi-Reel while TS374CDT uses Tape & Reel. Select based on application temperature requirements and procurement format.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (TLC374IDR, TS374IDT, TS374CDT, TS339IDT, TS339CDT) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: Can I use TS339IDT in place of TLC374ID if quiescent current is a critical design parameter? A: TS339IDT offers significantly lower quiescent current (25µA vs 800µA), making it suitable for power-sensitive applications. However, verify that general purpose comparator functionality meets application requirements, as TS339IDT is not a differential comparator type. Electrical compatibility exists for supply voltage, output current, and package, but functional differences must be evaluated.

Q: What packaging options are available for substitute parts? A: All substitute parts use 14-SOIC (0.154", 3.90mm Width) surface mount packaging, maintaining footprint compatibility with TLC374ID. Packaging format varies: TLC374IDR uses Cut Tape & Digi-Reel, TS374IDT uses Cut Tape & Digi-Reel, TS374CDT uses Tape & Reel, TS339IDT uses Cut Tape & Digi-Reel, and TS339CDT uses Tape & Reel. Select based on procurement and assembly requirements.