TLC354CPWR Equivalent & Substitute Parts

Part Overview

The TLC354CPWR is a 4-channel differential comparator manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This device operates across a wide supply voltage range of 1.4V to 16V (single supply) or ±0.7V to ±8V (dual supply), making it suitable for low-voltage and general-purpose comparison applications. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components ensures design continuity and supply chain reliability for applications requiring equivalent differential comparison functionality.

Substiute Parts

TLC354CPWR

Texas InstrumentsIn Stock: 683TLC354CPWR Datasheet

Current PartRFQ

TS339CPT

STMicroelectronicsIn Stock: 8156TS339CPT Datasheet

MFR RecommendedRFQ

TS339IPT

STMicroelectronicsIn Stock: 19183TS339IPT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC354CPWR is determined by the following critical parameters:

• Package Compatibility: Both substitute parts maintain the 14-TSSOP surface mount package with identical 0.173" width (4.40mm), ensuring PCB layout compatibility without redesign.
• Channel Count: All substitute parts provide 4 differential comparator elements, matching the functional requirement.
• Output Configuration: Substitute parts feature CMOS and Open-Drain outputs, which are compatible with the TLC354CPWR's output type specification.
• Supply Voltage Range: Substitute parts operate within 2.7V to 16V (single supply) or ±1.35V to ±8V (dual supply), covering the TLC354CPWR's operating range with extended lower voltage capability.
• Input Offset Voltage: All parts maintain 5mV maximum input offset voltage specification, ensuring equivalent comparison accuracy.
• Output Current: All parts deliver 20mA typical output current, matching the TLC354CPWR specification.
• Input Bias Current: Substitute parts feature 1pA maximum input bias current, which is superior to the TLC354CPWR's 5pA specification.
• Quiescent Current: Substitute parts operate at 25µA maximum quiescent current, significantly lower than the TLC354CPWR's 800µA, providing improved power efficiency.
• Compliance: All parts maintain ROHS3 compliance and MSL 1 rating, ensuring environmental and handling compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both TS339CPT and TS339IPT are active production parts from STMicroelectronics and serve as qualified substitutes for the end-of-life TLC354CPWR. Selection between the two substitute options depends on application temperature requirements:

TS339CPT maintains the same operating temperature range as the TLC354CPWR (0°C ~ 70°C) and is available in Tape & Reel packaging, providing direct thermal compatibility for standard industrial applications.

TS339IPT extends the operating temperature range to -40°C ~ 125°C, accommodating extended temperature applications including automotive and industrial environments requiring wider thermal performance. This part is available in Cut Tape and Digi-Reel packaging options.

Both substitute parts demonstrate superior power efficiency with quiescent current reduced to 25µA compared to the TLC354CPWR's 800µA specification. Both maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and handling compatibility. The minimum supply voltage for substitutes is 2.7V (single supply) or ±1.35V (dual supply), which is higher than the TLC354CPWR's 1.4V minimum; applications operating below 2.7V single supply require retention of the original TLC354CPWR.

Frequently Asked Questions (FAQ)

Q: Can TS339CPT and TS339IPT be used interchangeably with TLC354CPWR?

A: Yes, both parts are pin-compatible substitutes in the 14-TSSOP package. Selection depends on operating temperature requirements. TS339CPT covers 0°C ~ 70°C, while TS339IPT covers -40°C ~ 125°C. Verify your application's temperature range before selection.

Q: What is the minimum supply voltage difference between TLC354CPWR and the substitutes?

A: The TLC354CPWR operates at 1.4V minimum single supply voltage, while TS339CPT and TS339IPT require 2.7V minimum. Applications operating below 2.7V single supply cannot use the substitute parts.

Q: Are there differences in quiescent current consumption?

A: Yes. The TLC354CPWR draws 800µA maximum quiescent current, while both TS339CPT and TS339IPT draw 25µA maximum. This represents a 32-fold reduction in standby power consumption, beneficial for battery-powered or low-power applications.

Q: Do the substitute parts have different input bias current specifications?

A: The TS339CPT and TS339IPT feature 1pA maximum input bias current compared to the TLC354CPWR's 5pA. This lower bias current reduces input loading effects in high-impedance signal paths.

Q: What packaging options are available for each substitute?

A: TS339CPT is supplied in Tape & Reel (TR) packaging. TS339IPT is available in Cut Tape (CT) and Digi-Reel® packaging, providing flexibility for different procurement and assembly workflows.

Q: Are all parts RoHS compliant?

A: Yes. The TLC354CPWR and both substitute parts (TS339CPT and TS339IPT) are ROHS3 compliant with MSL 1 moisture sensitivity rating, meeting environmental and handling requirements.