TLC3702CPS Equivalent & Substitute Parts

Part Overview

The TLC3702CPS is a dual-channel general-purpose comparator manufactured by Texas Instruments, featuring CMOS push-pull TTL output architecture. This device operates across a 3V to 16V supply range and is housed in an 8-SO surface-mount package. The TLC3702CPS is designated as Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

TLC3702CPS

Texas InstrumentsIn Stock: 3454TLC3702CPS Datasheet

Current PartRFQ

TLC3702CDR

Texas InstrumentsIn Stock: 18164TLC3702CDR Datasheet

MFR RecommendedRFQ

NCS3402DR2G

onsemiIn Stock: 9169NCS3402DR2G Datasheet

MFR RecommendedRFQ

TC75W57FU,LF

Toshiba Semiconductor and StorageIn Stock: 24822TC75W57FU,LF Datasheet

MFR RecommendedRFQ

TS3702IDT

STMicroelectronicsIn Stock: 25428TS3702IDT Datasheet

MFR RecommendedRFQ

TS3702IPT

STMicroelectronicsIn Stock: 1196TS3702IPT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC3702CPS is determined by the following criteria:

Core Electrical Parameters:

• Dual-channel comparator architecture (2 elements)
• Supply voltage range compatibility (minimum 3V operation required)
• Output type compatibility (CMOS push-pull or TTL-compatible output)
• Input offset voltage and bias current within acceptable ranges
• Output current capability of 20mA or greater

Package Compatibility:

• 8-pin surface-mount packages (8-SOIC, 8-SO, 8-SSOP, 8-TSSOP)
• Pin-compatible or functionally equivalent pinouts

Compliance Requirements:

• ROHS3 compliance
• Active or available product status preferred over Last Time Buy

The substitute parts identified below meet these criteria with varying degrees of parameter alignment and package form factors.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLC3702CDR

The TLC3702CDR is the direct functional equivalent manufactured by Texas Instruments. It maintains identical electrical specifications including 3V to 16V supply range, 5mV input offset voltage, 84dB CMRR, and 20mA output current. The primary difference is packaging: TLC3702CDR uses a narrower 8-SOIC form factor (0.154" width) compared to the TLC3702CPS (0.209" width). Both devices share the same base product number and LinCMOS™ series designation. TLC3702CDR is in Active product status with significantly higher inventory availability (18,113 units), making it the preferred choice for design continuity.

Secondary Substitutes: TS3702IDT and TS3702IPT

The STMicroelectronics TS3702 series (TS3702IDT in 8-SOIC, TS3702IPT in 8-TSSOP) provides functional equivalence with extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). Electrical parameters are nearly identical: 5mV input offset voltage, 1pA input bias current, 20mA output current, and 82dB CMRR. Both variants are Active status with robust inventory. The TS3702IDT 8-SOIC package is mechanically compatible with standard 8-SOIC footprints. The TS3702IPT 8-TSSOP variant requires PCB layout adjustment but offers a more compact footprint.

Alternative Substitute: NCS3402DR2G

The onsemi NCS3402DR2G is a dual-channel comparator with Open-Drain output architecture, differing from the TLC3702CPS push-pull output. This device operates across 2.5V to 16V supply range with superior CMRR (88dB) and PSRR (105dB). However, the Open-Drain output requires external pull-up resistors and is not directly pin-compatible with push-pull output designs. NCS3402DR2G is suitable only for applications where output topology can be redesigned. The device is Active status with 9,125 units in inventory.

Alternative Substitute: TC75W57FU,LF

The Toshiba TC75W57FU,LF is a dual-channel push-pull comparator with the fastest propagation delay (140ns typical) among the substitutes. However, it operates across a narrower supply range (1.8V to 7V single supply, ±0.9V to ±4.6V dual supply), which may not accommodate 3V to 16V applications. Input offset voltage is higher at 7mV. The 8-SSOP package (0.110" width) is the most compact but requires PCB layout redesign. TC75W57FU,LF is Active status with the highest inventory (24,759 units).

Recommendation Summary:

For direct replacement with minimal design changes, select TLC3702CDR. For extended temperature range applications, select TS3702IDT or TS3702IPT. Evaluate NCS3402DR2G and TC75W57FU,LF only if output topology or supply voltage requirements differ from the original design.

Frequently Asked Questions (FAQ)

Q: Can TLC3702CDR be used as a direct drop-in replacement for TLC3702CPS?

A: TLC3702CDR is electrically equivalent and functionally compatible. The primary difference is the 8-SOIC package width (0.154" versus 0.209"). Both use identical pinouts and electrical specifications. PCB footprint adjustment may be required if the original design uses a wider 8-SO pad pattern. Verify PCB layout compatibility before assembly.

Q: What is the key difference between the TS3702 series and the TLC3702?

A: The TS3702 series (TS3702IDT, TS3702IPT) extends the operating temperature range to -40°C to 125°C compared to TLC3702's 0°C to 70°C. Electrical performance is nearly identical with 5mV input offset voltage and 82dB CMRR. The TS3702 series is suitable for industrial and automotive applications requiring wider temperature operation.

Q: Why is NCS3402DR2G listed as a substitute if it has Open-Drain output?

A: NCS3402DR2G is functionally equivalent as a dual-channel comparator but requires circuit redesign due to Open-Drain output topology. Applications using push-pull output directly cannot use this device without adding external pull-up resistors and modifying output signal conditioning. It is listed for reference in applications where output topology flexibility exists.

Q: What are the package differences among the substitute parts?

A: TLC3702CDR, TS3702IDT, and NCS3402DR2G use 8-SOIC packages with 0.154" width. TS3702IPT uses 8-TSSOP with 0.173" width. TC75W57FU,LF uses 8-SSOP with 0.110" width. All are surface-mount packages with 8-pin configurations. PCB footprint compatibility must be verified for each package type.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TLC3702CDR, NCS3402DR2G, TC75W57FU,LF, TS3702IDT, TS3702IPT) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All meet REACH compliance requirements.

Q: Which substitute offers the best inventory availability?

A: TC75W57FU,LF has the highest inventory at 24,759 units. TLC3702CDR has 18,113 units. TS3702IDT has 25,400 units. NCS3402DR2G has 9,125 units. TS3702IPT has the lowest at 1,125 units. Inventory levels should be verified with suppliers for current availability.

Q: Can TC75W57FU,LF replace TLC3702CPS in a 3V to 16V supply application?

A: No. TC75W57FU,LF operates across 1.8V to 7V single supply or ±0.9V to ±4.6V dual supply, which does not accommodate the full 3V to 16V range of the TLC3702CPS. This device is suitable only for applications operating within its specified voltage range.

Q: What is the propagation delay difference between substitutes?

A: TLC3702CPS and TLC3702CDR specify 4.5µs maximum propagation delay. TS3702IDT and TS3702IPT do not specify propagation delay. TC75W57FU,LF specifies 140ns typical propagation delay (significantly faster). NCS3402DR2G specifies 220µs typical propagation delay (significantly slower). Timing-critical applications must verify propagation delay specifications.