TLC3702ID Equivalent & Substitute Parts

Part Overview

The TLC3702ID is a dual general-purpose comparator manufactured by Texas Instruments, featuring CMOS push-pull TTL output architecture in an 8-SOIC surface mount package. This device operates across a 3V to 16V supply range and is designed for precision voltage comparison applications requiring low input offset voltage and moderate propagation delay characteristics.

The TLC3702ID carries a Last Time Buy product status, indicating that Texas Instruments has discontinued active production. This status necessitates identification of functionally equivalent alternatives to ensure design continuity and long-term supply chain reliability for new designs or production transitions.

Substiute Parts

TLC3702ID

Texas InstrumentsIn Stock: 2251TLC3702ID Datasheet

Current PartRFQ

TLC3702IDR

Texas InstrumentsIn Stock: 37260TLC3702IDR Datasheet

MFR RecommendedRFQ

MAX962EUA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2410MAX962EUA+ Datasheet

MFR RecommendedRFQ

NCS3402DR2G

onsemiIn Stock: 9169NCS3402DR2G Datasheet

MFR RecommendedRFQ

TS3702IDT

STMicroelectronicsIn Stock: 25428TS3702IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC3702ID is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC surface mount package (0.154" width, 3.90mm) to ensure direct PCB footprint compatibility without layout modifications.

Electrical Functionality: Substitute parts must provide dual comparator configuration with general-purpose application capability, supporting the required supply voltage range overlap with the original specification.

Output Architecture: The original device specifies CMOS push-pull TTL output. Substitutes may employ alternative output topologies (such as open-drain) provided the application circuit design accommodates the output impedance and drive characteristics.

Supply Voltage Range: The TLC3702ID operates from 3V to 16V. Substitute parts must support at minimum the voltage range required by the end application, with preference for devices maintaining the full 3V to 16V specification or extending the upper limit.

Precision Parameters: Input offset voltage, input bias current, and propagation delay are application-dependent. Substitutes with equal or superior (lower) specifications maintain full compatibility; substitutes with relaxed specifications require application-level verification.

Compliance & Certifications: All substitute parts must maintain ROHS3 compliance and MSL 1 rating to ensure manufacturing process compatibility and long-term reliability.

Parameter Comparison

Engineering Selection Recommendations

TLC3702IDR (Texas Instruments): This part represents the direct equivalent to the TLC3702ID, maintaining identical electrical specifications and package configuration. The TLC3702IDR carries Active product status and is available in Cut Tape and Digi-Reel packaging formats. This substitute provides the highest compatibility level with no design modifications required. Selection of TLC3702IDR is appropriate for applications requiring exact parameter matching and continued support from the original manufacturer.

TS3702IDT (STMicroelectronics): This device maintains the 8-SOIC package footprint and dual comparator configuration with CMOS push-pull output. The TS3702IDT extends the operating temperature range to -40°C to 125°C and offers superior input bias current performance (1pA maximum). Supply voltage compatibility spans 2.7V to 16V single supply or ±1.35V to 8V dual supply. The TS3702IDT is suitable for applications requiring extended temperature operation or lower input bias current characteristics. Product status is Active with substantial inventory availability.

NCS3402DR2G (onsemi): This comparator maintains 8-SOIC package compatibility and dual configuration but employs open-drain output architecture rather than push-pull. The NCS3402DR2G supports 2.5V to 16V supply range and extends operating temperature to -40°C to 125°C. Quiescent current is significantly reduced (640nA maximum). The open-drain output requires external pull-up resistors and is suitable for applications where this topology is acceptable. CMRR and PSRR specifications exceed the original device. Selection requires circuit-level design accommodation for open-drain output characteristics.

MAX962EUA+ (Analog Devices/Maxim Integrated): This device operates within a restricted supply voltage range of 2.7V to 5.5V, limiting applicability to low-voltage designs. The MAX962EUA+ uses 8-TSSOP/8-MSOP packaging, which differs from the 8-SOIC footprint and requires PCB layout modification. Input offset voltage is superior (1.5mV maximum), and propagation delay is significantly faster (7ns maximum). Quiescent current is substantially higher (9mA maximum). This substitute is appropriate only for applications operating within the 2.7V to 5.5V range where package footprint modification is feasible and faster response time is required.

Frequently Asked Questions (FAQ)

Q: Can the TLC3702IDR be used as a direct replacement for the TLC3702ID without any circuit modifications?

A: Yes. The TLC3702IDR is electrically and mechanically identical to the TLC3702ID, with the same 8-SOIC package footprint, dual comparator configuration, and electrical specifications. No circuit modifications are required. The primary difference is product status: TLC3702IDR is Active, while TLC3702ID is Last Time Buy.

Q: What is the key difference between the NCS3402DR2G and the original TLC3702ID?

A: The NCS3402DR2G employs open-drain output architecture, whereas the TLC3702ID uses CMOS push-pull TTL output. Open-drain output requires external pull-up resistors to establish output voltage levels. Applications using push-pull output directly must be redesigned to accommodate open-drain topology. Both devices maintain 8-SOIC package compatibility and dual comparator configuration.

Q: Why does the MAX962EUA+ have a different package than the TLC3702ID?

A: The MAX962EUA+ uses 8-TSSOP/8-MSOP packaging (0.118" width, 3.00mm), which differs from the 8-SOIC package (0.154" width, 3.90mm) of the TLC3702ID. This package difference requires PCB footprint modification and is not a direct pin-compatible substitute. Selection of MAX962EUA+ is appropriate only when package redesign is acceptable.

Q: Can the TS3702IDT be used in applications requiring operation above 85°C?

A: Yes. The TS3702IDT extends the operating temperature range to -40°C to 125°C, compared to the TLC3702ID specification of -40°C to 85°C. The TS3702IDT maintains 8-SOIC package compatibility and equivalent electrical specifications, making it suitable for high-temperature applications. All other electrical parameters remain compatible with the original design.

Q: What supply voltage range must be considered when selecting a substitute?

A: The TLC3702ID operates from 3V to 16V. Substitute selection depends on the application's actual supply voltage requirements. The TLC3702IDR and TS3702IDT maintain the full 3V to 16V range. The NCS3402DR2G supports 2.5V to 16V. The MAX962EUA+ is limited to 2.7V to 5.5V and is unsuitable for applications requiring operation above 5.5V. Verify that the selected substitute supports the complete supply voltage range of the target application.

Q: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. All substitute parts listed—TLC3702IDR, TS3702IDT, NCS3402DR2G, and MAX962EUA+—are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. These certifications ensure compatibility with modern manufacturing processes and long-term reliability in standard storage and handling conditions.

Q: Which substitute offers the fastest propagation delay?

A: The MAX962EUA+ provides the fastest propagation delay at 7 nanoseconds maximum, compared to 4.5 microseconds for the TLC3702ID. However, the MAX962EUA+ is limited to 2.7V to 5.5V supply range and requires package footprint modification. For applications requiring faster response within the 3V to 16V supply range, the TS3702IDT is the appropriate choice, though propagation delay specification is not provided in the available data.

Q: What is the impact of selecting NCS3402DR2G on quiescent current consumption?

A: The NCS3402DR2G offers significantly lower quiescent current at 640 nanoamperes maximum, compared to 65 microamperes for the TLC3702ID. This reduction is beneficial for battery-powered or low-power applications. However, the open-drain output topology requires external pull-up resistors, which may increase overall circuit current consumption depending on pull-up resistor values and switching frequency.