TLC372MDR Equivalent & Substitute Parts

Part Overview

The TLC372MDR is a dual differential comparator IC manufactured by Texas Instruments in the LinCMOS™ series. This 8-SOIC surface mount device provides CMOS, MOS, open-drain, and TTL output configurations suitable for precision voltage comparison applications. The part is currently active in production with 15,936 units in stock. Alternative equivalent parts may be required due to supply constraints, packaging preferences, or specific application requirements within the allowed electrical and mechanical parameter ranges.

Substiute Parts

TLC372MDR

Texas InstrumentsIn Stock: 16027TLC372MDR Datasheet

Current PartRFQ

TLC372MDRG4

Texas InstrumentsIn Stock: 1850TLC372MDRG4 Datasheet

Parametric EquivalentRFQ

NCS3402DR2G

onsemiIn Stock: 9169NCS3402DR2G Datasheet

MFR RecommendedRFQ

TS372CDT

STMicroelectronicsIn Stock: 10500TS372CDT Datasheet

MFR RecommendedRFQ

TS372IDT

STMicroelectronicsIn Stock: 19197TS372IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute parts for the TLC372MDR are determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package type: 8-SOIC surface mount form factor (0.154", 3.90mm width)
• Number of comparator elements: 2 differential comparators
• Output configuration: CMOS, MOS, open-drain, or TTL compatible
• Supply voltage range: Minimum 4V single supply or ±2V dual supply capability
• Input offset voltage: Maximum 5mV specification
• Input bias current: Maximum 5pA specification
• Output current capability: Minimum 20mA typical
• Quiescent current: Maximum 400µA
• Operating temperature range: Minimum -55°C to 125°C coverage
• RoHS3 compliance and MSL Level 1 rating

Substitutes are grouped into two categories: parametric equivalents (identical electrical specifications and packaging) and manufacturer-recommended alternatives (functionally compatible with allowable parameter variations within the specified ranges).

Parameter Comparison

Engineering Selection Recommendations

TLC372MDRG4 (Texas Instruments): This part is a parametric equivalent to the TLC372MDR with identical electrical specifications and 8-SOIC packaging. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). This part is discontinued at DiGi Electronics; verify current availability through alternative distributors before selection.

NCS3402DR2G (onsemi): This manufacturer-recommended alternative operates within the allowed supply voltage range (2.5V ~ 16V) and maintains 8-SOIC packaging. The output type is limited to open-drain configuration. Input offset voltage is superior (3.6mV @ 15V), and quiescent current is significantly lower (640nA). Operating temperature range is -40°C to 125°C, which does not extend to -55°C. This part is suitable for applications where the lower temperature limit of -40°C is acceptable and open-drain output is compatible with system design.

TS372CDT (STMicroelectronics): This differential comparator maintains 8-SOIC packaging and full output type compatibility. Supply voltage range is 3V ~ 16V (±1.5V ~ 8V), which does not extend to 4V minimum single supply. Input offset voltage is 10mV (double the TLC372MDR specification). Operating temperature range is 0°C to 70°C, which does not meet the -55°C to 125°C requirement. This part is suitable only for applications with relaxed temperature and offset voltage requirements.

TS372IDT (STMicroelectronics): This differential comparator is functionally equivalent to TS372CDT with identical electrical specifications but extended operating temperature range (-40°C to 125°C). This part does not meet the -55°C lower temperature limit. Packaging format is Cut Tape & Digi-Reel®. This part is suitable for applications where -40°C minimum temperature is acceptable.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can TLC372MDRG4 be used as a direct replacement for TLC372MDR?

A: TLC372MDRG4 is a parametric equivalent with identical electrical specifications and 8-SOIC packaging. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Direct substitution is possible if the packaging format is compatible with assembly equipment. However, this part is discontinued at DiGi Electronics; confirm availability before committing to design changes.

Q: What are the key limitations of NCS3402DR2G compared to TLC372MDR?

A: NCS3402DR2G has three primary differences: (1) output type is limited to open-drain only, whereas TLC372MDR supports CMOS, MOS, open-drain, and TTL; (2) operating temperature range is -40°C to 125°C, not extending to -55°C; (3) input bias current is 250pA at 15V, significantly higher than the 5pA specification of TLC372MDR. Use this part only if open-drain output is compatible with your circuit design and the -40°C minimum temperature is acceptable.

Q: Are TS372CDT and TS372IDT suitable replacements for the TLC372MDR?

A: Both STMicroelectronics parts maintain differential comparator functionality and 8-SOIC packaging. However, both have input offset voltage of 10mV (versus 5mV for TLC372MDR) and do not extend to the 4V minimum supply voltage. TS372CDT operates only to 0°C minimum, failing to meet the -55°C requirement. TS372IDT extends to -40°C minimum. Neither part is suitable for applications requiring the full -55°C to 125°C temperature range or 5mV input offset specification.

Q: What packaging format differences exist among these parts?

A: TLC372MDR and NCS3402DR2G are supplied in Tape & Reel (TR) format. TLC372MDRG4, TS372IDT are supplied in Cut Tape (CT) & Digi-Reel® format. TS372CDT is supplied in Tape & Reel (TR) format. Packaging format affects assembly line compatibility and component handling but does not impact electrical performance. Confirm your assembly equipment specifications before selecting based on packaging format.

Q: Do all substitute parts meet RoHS3 and MSL Level 1 requirements?

A: Yes. All listed substitute parts (TLC372MDRG4, NCS3402DR2G, TS372CDT, TS372IDT) are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the TLC372MDR specifications.

Q: Which substitute part has the best overall electrical performance?

A: NCS3402DR2G offers superior input offset voltage (3.6mV @ 15V) and significantly lower quiescent current (640nA). However, it is limited to open-drain output and does not extend to -55°C. For applications where these limitations are acceptable, NCS3402DR2G provides better power efficiency. For applications requiring full temperature range and multiple output types, TLC372MDRG4 is the closest equivalent, though it is discontinued at DiGi Electronics.