TLC354IDR Equivalent & Substitute Parts

Part Overview

The TLC354IDR 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 with a supply voltage range of 1.4V to 16V (single) or ±0.7V to ±8V (dual). The TLC354IDR is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternative comparators with compatible electrical and mechanical specifications are available from STMicroelectronics.

Substiute Parts

TLC354IDR

Texas InstrumentsIn Stock: 1501TLC354IDR 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 compatibility for the TLC354IDR is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must use 14-SOIC surface mount packaging (0.154", 3.90mm width) to ensure PCB footprint compatibility.

Functional Compatibility: Substitute parts must be 4-channel comparators with differential input configuration and CMOS/open-drain output capability to maintain circuit functionality.

Electrical Compatibility: Substitute parts must support the supply voltage range of 1.4V to 16V (single) or ±0.7V to ±8V (dual). Input offset voltage, input bias current, and output current specifications must be within acceptable operating margins for the application.

Compliance: All substitute parts must maintain ROHS3 compliance and MSL 1 rating to meet manufacturing and environmental standards.

The STMicroelectronics TS339 and TS374 series comparators meet these substitution criteria. The TS339 series provides general-purpose comparator functionality, while the TS374 series provides differential comparator functionality matching the TLC354IDR type classification.

Parameter Comparison

Engineering Selection Recommendations

For Differential Comparator Applications: The TS374IDT and TS374CDT are the primary substitutes for the TLC354IDR. Both devices maintain the differential comparator type classification and support CMOS, MOS, open-drain, and TTL output configurations. The TS374IDT offers extended operating temperature range (-40°C to 125°C) and cut tape packaging, while the TS374CDT provides tape and reel packaging for high-volume production. Both are active products with ROHS3 compliance and MSL 1 rating.

For General Purpose Comparator Applications: The TS339IDT and TS339CDT provide alternative 4-channel comparator solutions with general-purpose classification. These devices support CMOS and open-drain outputs with lower quiescent current (25µA) compared to the TLC354IDR (800µA). The TS339IDT offers extended operating temperature range (-40°C to 125°C), while the TS339CDT is limited to 0°C to 70°C. Both maintain ROHS3 compliance and MSL 1 rating.

Supply Voltage Considerations: The TS374 series supports minimum single supply voltage of 3V, compared to the TLC354IDR minimum of 1.4V. The TS339 series supports minimum single supply voltage of 2.7V. Applications requiring operation below 2.7V single supply voltage cannot use these substitutes.

Temperature Range Considerations: Applications requiring full -40°C to 85°C operation should select TS374IDT or TS339IDT, which support -40°C to 125°C operating range. The TS374CDT and TS339CDT are limited to 0°C to 70°C operation.

Frequently Asked Questions (FAQ)

Q: Can the TS339 series replace the TLC354IDR in all applications?

A: The TS339 series provides general-purpose comparator functionality with compatible 14-SOIC packaging and electrical specifications. However, the TS339 series is classified as general-purpose comparators, while the TLC354IDR is classified as differential comparators. Applications requiring specific differential input stage characteristics should use the TS374 series instead.

Q: What is the difference between TS374IDT and TS374CDT?

A: Both devices are identical in electrical specifications and operating temperature range (-40°C to 125°C for TS374IDT, 0°C to 70°C for TS374CDT). The primary difference is packaging format: TS374IDT is supplied in cut tape and Digi-Reel format for lower-volume applications, while TS374CDT is supplied in tape and reel format for high-volume production.

Q: Are there supply voltage limitations when substituting the TLC354IDR?

A: The TLC354IDR supports single supply voltage from 1.4V to 16V. The TS374 series supports 3V to 16V, and the TS339 series supports 2.7V to 16V. Applications requiring operation below 2.7V single supply voltage cannot use these substitute parts.

Q: Do all substitute parts maintain the same quiescent current specifications?

A: No. The TLC354IDR has maximum quiescent current of 800µA. The TS374 series has maximum quiescent current of 250µA, and the TS339 series has maximum quiescent current of 25µA. Lower quiescent current in substitute parts may provide power consumption benefits in battery-powered applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TS339CDT, TS339IDT, TS374CDT, TS374IDT) are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, matching the compliance profile of the TLC354IDR.

Q: What packaging options are available for the substitute parts?

A: All substitute parts use 14-SOIC (0.154", 3.90mm width) surface mount packaging, identical to the TLC354IDR. The TS339IDT and TS374IDT are supplied in cut tape and Digi-Reel format. The TS339CDT and TS374CDT are supplied in tape and reel format.