TLC374MDG4 Equivalent & Substitute Parts

Part Overview

The TLC374MDG4 is a 4-channel differential comparator IC manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This device implements CMOS/MOS architecture with open-drain and TTL-compatible outputs, designed for precision voltage comparison applications across industrial and commercial temperature ranges.

The TLC374MDG4 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for systems currently utilizing this component.

Substiute Parts

TLC374MDG4

Texas InstrumentsIn Stock: 862TLC374MDG4 Datasheet

Current PartRFQ

TLC374IDR

Texas InstrumentsIn Stock: 2420TLC374IDR Datasheet

MFR RecommendedRFQ

TS374CDT

STMicroelectronicsIn Stock: 10018TS374CDT Datasheet

MFR RecommendedRFQ

TS374IDT

STMicroelectronicsIn Stock: 7898TS374IDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC374MDG4 is determined by the following critical parameters:

Functional Equivalence: All substitute parts must maintain the same differential comparator architecture with 4 independent channels and identical output type classification (CMOS, MOS, Open-Drain, TTL).

Package Compatibility: All substitute parts must use the 14-SOIC surface mount package with identical 0.154" (3.90mm) width to ensure PCB layout compatibility without redesign.

Electrical Operating Range: Substitute parts must support the supply voltage range and input offset specifications required by the application. The TLC374MDG4 operates at 4V ~ 16V (single supply) or ±2V ~ 8V (dual supply).

Temperature Range Consideration: The TLC374MDG4 operates across -55°C ~ 125°C. Substitute parts with narrower temperature ranges may be acceptable depending on end-application requirements.

Compliance & Certification: All substitute parts must maintain ROHS3 compliance and equivalent environmental certifications (REACH Unaffected, EAR99 classification).

The following parts meet these substitution criteria:

• TLC374IDR (Texas Instruments) – Active product status, manufacturer-recommended substitute
• TS374CDT (STMicroelectronics) – Active product status, cross-manufacturer equivalent
• TS374IDT (STMicroelectronics) – Active product status, extended temperature range variant

Parameter Comparison

Engineering Selection Recommendations

TLC374IDR (Texas Instruments): This is the manufacturer-recommended substitute for the obsolete TLC374MDG4. Both parts originate from Texas Instruments and share identical electrical characteristics including input offset voltage (5mV @ 5V) and input bias current (5pA @ 5V). The TLC374IDR maintains active product status with 2324 units in stock. The primary trade-off is a narrower operating temperature range (-40°C ~ 85°C versus -55°C ~ 125°C). This substitute is optimal for applications operating within the -40°C to 85°C window.

TS374IDT (STMicroelectronics): This cross-manufacturer substitute provides the widest operating temperature range (-40°C ~ 125°C), matching the original TLC374MDG4 specification. The TS374IDT exhibits superior input bias current performance (1pA @ 5V versus 5pA @ 5V) and lower quiescent current (250µA versus 800µA), resulting in reduced power consumption. Input offset voltage is 10mV @ 5V, which represents a 2x increase from the original specification. This part is suitable for temperature-critical applications where extended range is mandatory.

TS374CDT (STMicroelectronics): This variant operates within a commercial temperature range (0°C ~ 70°C) and is not recommended for applications requiring the full industrial temperature specification of the original part. Selection of this part should be limited to applications with confirmed operating temperature constraints within 0°C to 70°C.

All three substitute parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 classification, ensuring regulatory equivalence with the original TLC374MDG4.

Frequently Asked Questions (FAQ)

Q: Can the TLC374IDR directly replace the TLC374MDG4 in all applications?

A: The TLC374IDR is electrically equivalent and pin-compatible with the TLC374MDG4. However, the operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C). Direct substitution is valid only for applications operating within the -40°C to 85°C window. Applications requiring the full -55°C to 125°C range should use the TS374IDT instead.

Q: What are the key differences between the Texas Instruments and STMicroelectronics options?

A: The TLC374IDR (Texas Instruments) maintains identical input offset voltage (5mV @ 5V) and input bias current (5pA @ 5V) specifications as the original TLC374MDG4. The TS374IDT and TS374CDT (STMicroelectronics) offer improved input bias current (1pA @ 5V) and lower quiescent current (250µA versus 800µA), but exhibit higher input offset voltage (10mV @ 5V). Temperature range varies: TLC374IDR operates -40°C ~ 85°C, TS374IDT operates -40°C ~ 125°C, and TS374CDT operates 0°C ~ 70°C.

Q: Are all substitute parts available in the same package?

A: All substitute parts use the 14-SOIC surface mount package with 0.154" (3.90mm) width, ensuring identical PCB footprint compatibility. No layout modifications are required for substitution.

Q: Which substitute part should I select for new designs?

A: For new designs, the TS374IDT is recommended due to its active product status, extended temperature range (-40°C ~ 125°C), superior input bias current performance (1pA @ 5V), and lower power consumption (250µA quiescent current). The TLC374IDR remains a valid alternative if operating temperature is constrained to -40°C ~ 85°C and input offset voltage precision is critical (5mV @ 5V specification).

Q: Are there any compliance or certification differences between the substitute parts?

A: All substitute parts maintain identical compliance certifications: ROHS3 Compliant, REACH Unaffected status, and EAR99 classification. No regulatory differences exist between the original TLC374MDG4 and the three substitute options.

Q: What is the impact of the higher input offset voltage in the STMicroelectronics parts?

A: The TS374IDT and TS374CDT specify 10mV @ 5V input offset voltage compared to 5mV @ 5V for the TLC374MDG4 and TLC374IDR. This 2x increase may impact precision in applications with tight input signal margins. Applications with input signals significantly larger than the offset voltage specification will not be affected. Verify application-specific offset voltage requirements before substitution.