TLC3704CD Equivalent & Substitute Parts

Part Overview

The TLC3704CD is a general-purpose CMOS comparator manufactured by Texas Instruments, featuring four independent comparators in a 14-SOIC surface-mount package. This device operates across a wide supply voltage range of 3V to 16V and delivers push-pull TTL-compatible outputs suitable for signal conditioning and threshold detection applications.

The TLC3704CD is currently in Last Time Buy status, indicating that Texas Instruments has discontinued active production. This necessitates identifying equivalent and substitute parts that maintain functional compatibility while ensuring continued design support and component availability.

Substiute Parts

TLC3704CD

Texas InstrumentsIn Stock: 1592TLC3704CD Datasheet

Current PartRFQ

TLC3704CDR

Texas InstrumentsIn Stock: 9639TLC3704CDR Datasheet

MFR RecommendedRFQ

MAX964EEE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2388MAX964EEE+T Datasheet

MFR RecommendedRFQ

TS339CDT

STMicroelectronicsIn Stock: 5517TS339CDT Datasheet

MFR RecommendedRFQ

TS339IDT

STMicroelectronicsIn Stock: 15817TS339IDT Datasheet

MFR RecommendedRFQ

TS3704CDT

STMicroelectronicsIn Stock: 2663TS3704CDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC3704CD is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of comparator elements: 4
• Package type: 14-SOIC surface mount
• Output type: CMOS with push-pull or open-drain configuration
• Supply voltage range: Minimum 3V to 16V overlap
• Input offset voltage: Maximum 5mV @ 10V
• Input bias current: Maximum 5pA @ 5V
• Output current capability: Minimum 20mA typical
• Operating temperature: Minimum 0°C to 70°C range
• RoHS3 compliance and MSL 1 rating

Substitute Categories:

Category A - Direct Pin-Compatible Replacements (Identical Package, Matching Output Stage):

• TLC3704CDR: Texas Instruments, identical specifications, Cut Tape packaging, Active status
• TS3704CDT: STMicroelectronics, push-pull output, 14-SO package, Active status

Category B - Functional Equivalents (Same Element Count, Compatible Package, Output Type Variation):

• TS339CDT: STMicroelectronics, open-drain output, 14-SO package, Active status
• TS339IDT: STMicroelectronics, open-drain output, 14-SO package, extended temperature range, Active status

Category C - Alternative Architecture (Different Package, Reduced Supply Range):

• MAX964EEE+T: Analog Devices/Maxim, 16-QSOP package, reduced supply voltage range (2.7V ~ 5.5V), Active status

Parameter Comparison

Engineering Selection Recommendations

TLC3704CDR (Recommended Primary Substitute)

The TLC3704CDR is the manufacturer-recommended replacement for the TLC3704CD. Both parts are produced by Texas Instruments and share identical electrical specifications, including supply voltage range (3V ~ 16V), input offset voltage (5mV @ 10V), output current (20mA typical), and CMRR (84dB). The only difference is packaging format: TLC3704CDR is supplied in Cut Tape and Digi-Reel format rather than Tube. This part maintains Active product status with significantly higher inventory availability (9564 units) compared to the Last Time Buy TLC3704CD. All compliance certifications (ROHS3, MSL 1) are identical.

TS3704CDT (Secondary Substitute - STMicroelectronics)

The TS3704CDT provides functional equivalence with push-pull output configuration matching the TLC3704CD. It operates across the same supply voltage range (2.7V ~ 16V with dual supply option) and maintains identical input offset voltage (5mV @ 10V) and output current (20mA typical). The TS3704CDT features improved input bias current (1pA @ 5V versus 5pA @ 5V) and lower quiescent current (25µA versus 100µA), resulting in reduced power consumption. This part is Active with 2590 units in stock and meets all compliance requirements.

TS339IDT (Extended Temperature Range Alternative)

The TS339IDT is suitable for applications requiring extended operating temperature coverage (-40°C ~ 125°C versus 0°C ~ 70°C). This STMicroelectronics part features open-drain output configuration and maintains compatibility across the supply voltage range. Input offset voltage and output current specifications match the TLC3704CD. The TS339IDT is Active with the highest inventory availability (15753 units) among all substitutes.

MAX964EEE+T (Limited Compatibility - Voltage Range Constraint)

The MAX964EEE+T from Analog Devices/Maxim is suitable only for applications operating within the reduced supply voltage range of 2.7V ~ 5.5V. This part features superior propagation delay (7ns versus 4.5µs) and lower input offset voltage (1.5mV @ 5V), but requires a 16-QSOP package instead of 14-SOIC. The significantly higher quiescent current (9mA versus 100µA) and higher input bias current (15µA @ 5V) make this option suitable only for low-voltage applications where the performance advantages justify the package change and increased power consumption.

TS339CDT (Open-Drain Configuration)

The TS339CDT provides open-drain output configuration with identical input offset voltage and output current specifications. This part is suitable for applications requiring open-drain logic interfacing. Operating temperature range matches the TLC3704CD (0°C ~ 70°C), and supply voltage compatibility extends to ±1.35V ~ 8V dual supply operation. Inventory availability is 5465 units.

Frequently Asked Questions (FAQ)

Q: Can I directly replace TLC3704CD with TLC3704CDR without PCB modifications?

A: Yes. The TLC3704CDR is pin-compatible and electrically identical to the TLC3704CD. The only difference is packaging format (Cut Tape/Digi-Reel versus Tube). No PCB modifications are required.

Q: What is the key difference between push-pull and open-drain output configurations?

A: Push-pull outputs (TLC3704CD, TLC3704CDR, TS3704CDT) actively drive both high and low logic states. Open-drain outputs (TS339CDT, TS339IDT) pull low actively but require external pull-up resistors for high-state operation. Open-drain configuration is suitable for wired-OR logic and multi-master bus applications.

Q: Why does the MAX964EEE+T have a different package (16-QSOP versus 14-SOIC)?

A: The MAX964EEE+T is a different product line from Analog Devices/Maxim with enhanced performance specifications. The 16-QSOP package accommodates additional internal circuitry. PCB layout modifications are required for this substitution.

Q: Can I use TS339IDT in applications requiring 0°C ~ 70°C operation?

A: Yes. The TS339IDT operating temperature range (-40°C ~ 125°C) encompasses the 0°C ~ 70°C specification of the TLC3704CD. The extended range provides additional design margin for temperature-sensitive applications.

Q: What is the impact of using TS3704CDT instead of TLC3704CD on power consumption?

A: The TS3704CDT reduces quiescent current from 100µA to 25µA (75% reduction) and input bias current from 5pA to 1pA. For battery-powered or low-power applications, this represents a significant power consumption improvement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (TLC3704CDR, MAX964EEE+T, TS339CDT, TS339IDT, TS3704CDT) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the TLC3704CD compliance profile.

Q: Which substitute offers the fastest propagation delay?

A: The MAX964EEE+T features 7ns propagation delay, significantly faster than the TLC3704CD (4.5µs). However, this part is limited to 2.7V ~ 5.5V supply voltage range and requires package redesign.

Q: Can I use TS339CDT in high-speed switching applications?

A: The TS339CDT does not specify propagation delay in the provided data. For applications requiring guaranteed propagation delay specifications, TLC3704CDR or MAX964EEE+T are recommended.