TLC339CD Equivalent & Substitute Parts

Part Overview

The TLC339CD is a general-purpose CMOS comparator with open-drain output, manufactured by Texas Instruments in a 14-SOIC surface-mount package. This device is classified as obsolete, though 1,358 units remain in stock. The TLC339CD operates across a wide supply voltage range of 3V to 16V and features four independent comparator elements suitable for precision signal comparison applications.

Due to its obsolete status, identifying functionally equivalent and compatible substitute parts is essential for design continuity, long-term availability assurance, and supply chain flexibility. Active alternatives from both Texas Instruments and other manufacturers provide equivalent or enhanced performance characteristics while maintaining design compatibility.

Substiute Parts

TLC339CD

Texas InstrumentsIn Stock: 1372TLC339CD Datasheet

Current PartRFQ

TLC339CDR

Texas InstrumentsIn Stock: 2401TLC339CDR Datasheet

MFR RecommendedRFQ

CMP401GRUZ-REEL

Analog Devices Inc.In Stock: 4922CMP401GRUZ-REEL Datasheet

MFR RecommendedRFQ

CMP401GSZ

Analog Devices Inc.In Stock: 2922CMP401GSZ Datasheet

MFR RecommendedRFQ

TS339CDT

STMicroelectronicsIn Stock: 5517TS339CDT Datasheet

MFR RecommendedRFQ

TS374CDT

STMicroelectronicsIn Stock: 10018TS374CDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the TLC339CD is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of comparator elements (4 required)
• Output type (CMOS, Open-Drain preferred for direct pin compatibility)
• Supply voltage range (minimum 3V ~ 16V overlap required)
• Package type (14-pin surface-mount packages)
• Input offset voltage and bias current specifications
• Quiescent current and output current ratings

Substitution Groups:

Group 1: Direct Pin-Compatible Substitutes (14-SOIC, CMOS Open-Drain)

• TLC339CDR (Texas Instruments) - Active product, identical electrical specifications, Cut Tape & Digi-Reel packaging
• TS339CDT (STMicroelectronics) - Active product, 14-SO package, enhanced specifications (lower quiescent current, lower input bias)

Group 2: Functional Equivalents with Package Variation (16-pin packages, CMOS/TTL Output)

• CMP401GSZ (Analog Devices Inc.) - Active product, 16-SOIC package, CMOS/TTL output, ±5V supply
• CMP401GRUZ-REEL (Analog Devices Inc.) - Active product, 16-TSSOP package, CMOS/TTL output, ±5V supply

Group 3: Enhanced Differential Comparator (14-SO, Extended Functionality)

• TS374CDT (STMicroelectronics) - Active product, 14-SO package, differential comparator with extended output types

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, No PCB Modification):

TLC339CDR is the primary recommended substitute. As an active product from Texas Instruments with identical electrical specifications and 14-SOIC packaging, it provides seamless compatibility with existing TLC339CD designs. The part is available in Cut Tape and Digi-Reel packaging with 2,323 units in stock, ensuring supply continuity.

TS339CDT from STMicroelectronics offers an alternative direct replacement with enhanced performance characteristics. It maintains the 14-SOIC package and CMOS open-drain output while providing superior specifications: lower quiescent current (25µA vs. 100µA), lower input bias current (1pA vs. 5pA), and extended supply voltage range (2.7V ~ 16V). This part is active with 5,465 units in stock.

For Applications Requiring Extended Temperature Range:

CMP401GSZ and CMP401GRUZ-REEL from Analog Devices Inc. support operating temperatures from -40°C to 125°C, compared to the TLC339CD's 0°C to 70°C range. These parts require PCB layout modifications due to 16-pin packaging (16-SOIC and 16-TSSOP respectively) and operate on ±5V supply. They are suitable for industrial and automotive applications requiring extended temperature performance.

For Differential Comparator Applications:

TS374CDT provides enhanced functionality as a differential comparator with multiple output types (CMOS, MOS, Open-Drain, TTL). While it maintains 14-SO packaging and 4-element configuration, it features higher quiescent current (250µA) and higher input offset voltage (10mV @ 5V). This part is recommended only when differential comparison capability is required.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, matching the TLC339CD's regulatory requirements. All parts are active products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can TLC339CDR be used as a direct drop-in replacement for TLC339CD?

A: Yes. TLC339CDR is manufactured by Texas Instruments with identical electrical specifications, 14-SOIC packaging, and CMOS open-drain output. No PCB modifications are required. The primary difference is product status: TLC339CDR is active while TLC339CD is obsolete.

Q: What is the key difference between TS339CDT and TLC339CDR?

A: Both are pin-compatible 14-SOIC comparators with CMOS open-drain output. TS339CDT offers superior specifications: quiescent current of 25µA versus 100µA, input bias current of 1pA versus 5pA, and extended supply voltage range (2.7V ~ 16V versus 3V ~ 16V). TS339CDT is manufactured by STMicroelectronics while TLC339CDR is from Texas Instruments.

Q: Why do CMP401GSZ and CMP401GRUZ-REEL require PCB modifications?

A: These Analog Devices parts use 16-pin packages (16-SOIC and 16-TSSOP respectively) compared to the TLC339CD's 14-pin SOIC package. Pin assignments differ, requiring PCB layout changes. Additionally, they operate on ±5V supply rather than the 3V ~ 16V single supply of the TLC339CD.

Q: Can I use TS374CDT as a replacement for TLC339CD?

A: TS374CDT is functionally compatible but not a direct replacement. It is a differential comparator with extended output types and higher quiescent current (250µA). Use TS374CDT only when differential comparison capability is specifically required for your application.

Q: What is the impact of lower quiescent current in TS339CDT?

A: Lower quiescent current (25µA versus 100µA) reduces power consumption, particularly in battery-powered or low-power applications. This makes TS339CDT advantageous for designs where power efficiency is a priority.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (TLC339CDR, TS339CDT, CMP401GSZ, CMP401GRUZ-REEL, and TS374CDT) are ROHS3 compliant with MSL Level 1 rating and REACH unaffected status, matching the TLC339CD's regulatory compliance.

Q: Which substitute offers the widest operating temperature range?

A: CMP401GSZ and CMP401GRUZ-REEL support -40°C to 125°C, compared to 0°C to 70°C for the TLC339CD and other substitutes. These parts are suitable for industrial and automotive applications requiring extended temperature performance.

Q: What packaging options are available for substitutes?

A: TLC339CDR is available in Cut Tape and Digi-Reel packaging. TS339CDT and TS374CDT are supplied in Tape & Reel. CMP401GSZ is supplied in Tube packaging, while CMP401GRUZ-REEL is supplied in Cut Tape and Digi-Reel. Select packaging based on your procurement and assembly requirements.