TLV3701CD Equivalent & Substitute Parts

Part Overview

The TLV3701CD is a general-purpose CMOS comparator manufactured by Texas Instruments, featuring push-pull, rail-to-rail output architecture in an 8-SOIC surface-mount package. This device operates across a wide supply voltage range of 2.5V to 16V (single supply) or ±1.25V to ±8V (dual supply), making it suitable for diverse analog signal comparison applications.

The TLV3701CD is classified as Last Time Buy, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new designs and production runs.

Substiute Parts

TLV3701CD

Texas InstrumentsIn Stock: 756TLV3701CD Datasheet

Current PartRFQ

TLV3701IDBVR

Texas InstrumentsIn Stock: 36920TLV3701IDBVR Datasheet

MFR RecommendedRFQ

MAX985ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1029MAX985ESA+ Datasheet

MFR RecommendedRFQ

MAX987ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 864MAX987ESA+ Datasheet

MFR RecommendedRFQ

MAX987ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 4676MAX987ESA+T Datasheet

MFR RecommendedRFQ

MAX998EUT+T

Analog Devices Inc./Maxim IntegratedIn Stock: 25562MAX998EUT+T Datasheet

MFR RecommendedRFQ

MCP6561UT-E/OT

Microchip TechnologyIn Stock: 23194MCP6561UT-E/OT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV3701CD is determined by the following critical parameters:

Package Compatibility: The main part uses 8-SOIC packaging. Substitutes must maintain electrical equivalence while considering package form factor changes.

Electrical Specifications: Substitutes must support the required supply voltage range, maintain comparable input offset voltage, input bias current, and output drive capability. The TLV3701CD's wide supply range (2.5V to 16V) and low quiescent current (1µA max) are defining characteristics.

Output Architecture: Push-pull, rail-to-rail CMOS output is essential for direct replacement in existing designs.

Temperature Range: The TLV3701CD operates 0°C to 70°C. Substitutes with extended temperature ranges (-40°C to 125°C) provide additional operational flexibility.

Compliance: All substitutes must maintain ROHS3 compliance and MSL Level 1 rating for manufacturing compatibility.

Substitutes are grouped into two categories:

Category 1 - Package-Compatible (8-SOIC): MAX985ESA+, MAX987ESA+, MAX987ESA+T. These maintain identical package form factor and pinout compatibility.

Category 2 - Functional Equivalent (Alternative Package): TLV3701IDBVR (SOT-23-5), MAX998EUT+T (SOT-6), MCP6561UT-E/OT (SOT-23-5). These provide electrical equivalence with different package options for space-constrained designs.

Parameter Comparison

Engineering Selection Recommendations

For Direct Package Replacement (8-SOIC):

MAX987ESA+T is the primary substitute for the TLV3701CD in 8-SOIC form factor. It maintains identical package dimensions, surface-mount compatibility, and push-pull rail-to-rail output architecture. The part is in active production status with 4,568 units available in cut-tape format. Supply voltage range is restricted to 2.5V to 5.5V (single) compared to the TLV3701CD's 2.5V to 16V, requiring verification against application requirements. Operating temperature extends to -40°C to 85°C, providing broader environmental coverage than the original part's 0°C to 70°C range.

MAX987ESA+ (tube packaging) and MAX985ESA+ are alternative 8-SOIC options with active product status. MAX985ESA+ exhibits lower quiescent current (24µA vs. 96µA) and faster propagation delay (450ns), while MAX987ESA+ provides faster response (210ns propagation delay) with higher quiescent current consumption.

For Space-Constrained Designs (Alternative Packages):

TLV3701IDBVR (SOT-23-5) is a Texas Instruments product maintaining the TLV3701 base part number with identical electrical specifications to the TLV3701CD. This option preserves manufacturer continuity and performance characteristics while reducing board footprint. Extended temperature range (-40°C to 125°C) and active production status support long-term availability.

MCP6561UT-E/OT (Microchip, SOT-23-5) offers the lowest supply voltage floor (1.8V minimum) and highest output current capability (50mA typical). Extended temperature range (-40°C to 125°C) and high inventory (23,100 units) ensure availability. CMRR and PSRR values (66dB and 70dB respectively) are lower than the TLV3701CD.

MAX998EUT+T (SOT-6) provides the fastest propagation delay (28ns) and superior CMRR/PSRR performance (95dB/100dB). This option is suitable for high-speed comparison applications but exhibits significantly higher quiescent current (650µA) and restricted supply voltage range (2.7V to 5.5V single supply only).

Compliance and Manufacturing:

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes and environmental regulations. Cut-tape and Digi-Reel packaging formats provide flexibility for both prototype and production-volume procurement.

Frequently Asked Questions (FAQ)

Q: Can MAX987ESA+T directly replace TLV3701CD in existing designs?

A: MAX987ESA+T maintains identical 8-SOIC package dimensions and pinout, enabling direct PCB substitution. However, the supply voltage range is limited to 2.5V to 5.5V (single supply) versus the TLV3701CD's 2.5V to 16V. Designs operating above 5.5V supply voltage require alternative substitutes or circuit redesign.

Q: What is the primary difference between MAX987ESA+ and MAX987ESA+T?

A: Both parts are electrically identical with 210ns propagation delay and 96µA quiescent current. The difference is packaging format: MAX987ESA+ is supplied in tube packaging, while MAX987ESA+T is supplied in cut-tape and Digi-Reel format. Selection depends on procurement and assembly requirements.

Q: Why does TLV3701IDBVR use a different package (SOT-23-5) than the original TLV3701CD (8-SOIC)?

A: TLV3701IDBVR is a space-optimized variant of the TLV3701 base product family. The SOT-23-5 package reduces board footprint by approximately 60% compared to 8-SOIC while maintaining identical electrical performance. PCB layout redesign is required for package migration.

Q: Is MCP6561UT-E/OT suitable for high-voltage applications?

A: No. MCP6561UT-E/OT operates with a maximum single supply voltage of 5.5V, making it unsuitable for applications requiring the TLV3701CD's 16V capability. For high-voltage designs, MAX987ESA+T or TLV3701IDBVR are not recommended either. Designs exceeding 5.5V supply voltage should retain the TLV3701CD or evaluate alternative comparator families with higher voltage ratings.

Q: What is the impact of quiescent current differences on power consumption?

A: The TLV3701CD and TLV3701IDBVR both specify 1µA maximum quiescent current, ideal for battery-powered applications. MAX987ESA+T draws 96µA, MCP6561UT-E/OT draws 130µA, and MAX998EUT+T draws 650µA. For low-power designs, TLV3701IDBVR is the preferred substitute. For applications where quiescent current is non-critical, other substitutes are acceptable.

Q: Can substitutes be mixed within a single design?

A: No. Each substitute part has distinct electrical characteristics, package footprints, and pinout configurations. Mixing different substitutes within a single design introduces compatibility risks and complicates assembly and testing procedures. Select a single substitute part for the entire production run.

Q: What is the significance of CMRR and PSRR values in comparator selection?

A: CMRR (Common Mode Rejection Ratio) and PSRR (Power Supply Rejection Ratio) determine the comparator's ability to reject unwanted signals. The TLV3701CD specifies 88dB CMRR and 105dB PSRR. MAX998EUT+T offers superior rejection (95dB CMRR, 100dB PSRR), while MCP6561UT-E/OT provides lower rejection (66dB CMRR, 70dB PSRR). Applications with high noise environments benefit from higher CMRR and PSRR values.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, meeting environmental and manufacturing standards equivalent to the TLV3701CD.