TLC354ID Equivalent & Substitute Parts

Part Overview

The TLC354ID is a 4-channel differential comparator IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This LinCMOS™ series component features CMOS, MOS, open-drain, and TTL output configurations with a supply voltage range of 1.4V to 16V (single) or ±0.7V to ±8V (dual). The device is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain component availability for new production runs and field replacements.

Substiute Parts

TLC354ID

Texas InstrumentsIn Stock: 1486TLC354ID Datasheet

Current PartRFQ

TS339CDT

STMicroelectronicsIn Stock: 5517TS339CDT Datasheet

MFR RecommendedRFQ

TS339IDT

STMicroelectronicsIn Stock: 15817TS339IDT Datasheet

MFR RecommendedRFQ

TS374CDT

STMicroelectronicsIn Stock: 10018TS374CDT Datasheet

MFR RecommendedRFQ

TS374IDT

STMicroelectronicsIn Stock: 7898TS374IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC354ID is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: 14-SOIC surface mount form factor
• Comparator type: Differential configuration with 4 elements
• Output stage: CMOS, MOS, open-drain, and TTL output capability
• Supply voltage range: Must encompass or exceed 1.4V ~ 16V (single) and ±0.7V ~ ±8V (dual)
• Input offset voltage: Maximum 5mV @ 5V
• Output current: 20mA typical
• RoHS3 compliance and MSL Level 1 rating

Substitute Categories:

Category A - Differential Comparators (Direct Type Match): TS374CDT and TS374IDT maintain the differential comparator architecture with identical 4-element configuration and matching output types. These parts satisfy the core functional requirements with compatible supply voltage ranges and output current specifications.

Category B - General Purpose Comparators (Functional Equivalents): TS339CDT and TS339IDT are general purpose 4-channel comparators with CMOS and open-drain outputs. While classified as general purpose rather than differential, they provide functional equivalence through compatible output stages, supply voltage ranges, and current specifications suitable for differential input applications.

Parameter Comparison

Engineering Selection Recommendations

TS374IDT and TS374CDT (Preferred Substitutes): These STMicroelectronics differential comparators provide the closest functional match to the TLC354ID. Both maintain differential comparator architecture with identical 4-element configuration and full output type compatibility (CMOS, MOS, open-drain, TTL). TS374IDT offers extended operating temperature range (-40°C ~ 125°C) matching industrial applications, while TS374CDT operates within 0°C ~ 70°C commercial range. Both are Active status products with ROHS3 compliance and MSL Level 1 rating. The TS374 series exhibits lower quiescent current (250µA vs. 800µA) and improved input bias current (1pA vs. 5pA), providing enhanced power efficiency. Supply voltage minimum increases from 1.4V to 3V (single) and ±0.7V to ±1.5V (dual), which may require circuit evaluation for ultra-low voltage applications.

TS339IDT and TS339CDT (Functional Alternatives): These general purpose comparators from STMicroelectronics provide functional equivalence through compatible CMOS and open-drain output stages. TS339IDT supports extended temperature range (-40°C ~ 125°C), while TS339CDT operates within 0°C ~ 70°C. Both deliver superior quiescent current performance (25µA) and input bias current (1pA), with ROHS3 compliance and MSL Level 1 certification. The general purpose classification differs from the differential type, but output stage compatibility and electrical characteristics support substitution in applications where differential input architecture is not mandatory. Supply voltage range encompasses the TLC354ID requirements with minimum at 2.7V (single) and ±1.35V (dual).

Product Status Consideration: All substitute parts maintain Active product status, ensuring long-term availability and continued manufacturing support, contrasting with the TLC354ID Last Time Buy designation.

Frequently Asked Questions (FAQ)

Q: Can TS374IDT directly replace TLC354ID in all applications? A: TS374IDT maintains differential comparator architecture with compatible output types and 4-element configuration. The primary design consideration is the increased minimum supply voltage (3V vs. 1.4V single supply), which requires circuit evaluation for applications operating below 3V. Operating temperature range extends to 125°C, supporting broader environmental specifications.

Q: What is the functional difference between TS374 and TS339 series substitutes? A: TS374 series maintains differential comparator classification matching the TLC354ID type. TS339 series are general purpose comparators with CMOS and open-drain outputs. Both provide functional equivalence through compatible output stages and electrical characteristics. Selection depends on whether differential input architecture is required for the specific application.

Q: Are there packaging differences between substitute options? A: All substitute parts use 14-SOIC surface mount packaging matching the TLC354ID. Packaging format options differ: TS374IDT and TS339IDT are supplied in Cut Tape (CT) & Digi-Reel® format, while TS374CDT and TS339CDT use Tape & Reel (TR) format. The original TLC354ID is supplied in Tube format. PCB footprint and reflow soldering requirements remain identical across all options.

Q: How do quiescent current specifications affect circuit design? A: The TLC354ID specifies 800µA maximum quiescent current, while all substitute parts reduce this to 250µA (TS374 series) or 25µA (TS339 series). Lower quiescent current reduces power consumption and heat dissipation, benefiting battery-powered and thermally constrained applications. Circuit designs relying on specific quiescent current characteristics should be evaluated during substitution.

Q: What compliance certifications apply to substitute parts? A: All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited) rating, matching the TLC354ID certifications. REACH status is Unaffected for all options, and ECCN classification remains EAR99 across all parts.

Q: Which substitute part offers the widest operating temperature range? A: TS374IDT and TS339IDT both support -40°C ~ 125°C operating temperature range, extending 40°C above the TLC354ID specification (-40°C ~ 85°C). This extended range supports industrial and automotive applications requiring broader temperature performance.