TLC374MD Equivalent & Substitute Parts

Part Overview

The TLC374MD is a 4-channel differential comparator IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This device operates across a wide supply voltage range (4V ~ 16V single supply, ±2V ~ 8V dual supply) and is designed for precision voltage comparison applications requiring CMOS/MOS output architecture with open-drain and TTL compatibility.

The TLC374MD is designated as Last Time Buy, indicating end-of-life status. Identifying functionally equivalent substitute parts is necessary to ensure design continuity and maintain component availability for production and maintenance applications.

Substiute Parts

TLC374MD

Texas InstrumentsIn Stock: 1011TLC374MD 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

Substitute parts for the TLC374MD are qualified based on the following electrical and mechanical compatibility criteria:

Core Substitution Parameters:

• Differential comparator architecture with 4 independent channels
• CMOS/MOS output configuration with open-drain and TTL compatibility
• 14-pin SOIC surface mount package (0.154" width, 3.90mm)
• Output current capability of 20mA (typical)
• Supply voltage range supporting both single and dual supply operation
• RoHS3 compliance and MSL Level 1 moisture sensitivity

Identified Substitute Parts:

• TLC374IDR (Texas Instruments, Active status, Cut Tape packaging)
• TS374CDT (STMicroelectronics, Active status, Tape & Reel packaging)
• TS374IDT (STMicroelectronics, Active status, Cut Tape packaging)

All substitute parts maintain the same functional architecture, pin configuration, and core electrical characteristics necessary for direct circuit replacement.

Parameter Comparison

Engineering Selection Recommendations

TLC374IDR (Texas Instruments): This part is the manufacturer-recommended substitute from Texas Instruments. It maintains Active product status and is available in Cut Tape and Digi-Reel packaging. The TLC374IDR is electrically compatible with the TLC374MD across the overlapping supply voltage range (3V ~ 16V single supply). The operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C), which may require evaluation for applications requiring extended temperature operation. This option provides continuity within the Texas Instruments product family.

TS374IDT (STMicroelectronics): This STMicroelectronics alternative offers the widest operating temperature range (-40°C ~ 125°C) among substitute options, matching the TLC374MD's upper temperature limit. The TS374IDT features lower input bias current (1pA versus 5pA) and reduced quiescent current (250µA versus 800µA), providing potential power consumption benefits. It is available in Cut Tape packaging and maintains Active product status. The supply voltage range is compatible (3V ~ 16V single supply).

TS374CDT (STMicroelectronics): This part is available in Tape & Reel packaging and offers the same electrical characteristics as the TS374IDT. The operating temperature range is restricted to 0°C ~ 70°C, limiting applicability to commercial temperature environments. Selection of this part should be based on packaging requirements and temperature specification compatibility.

All substitute parts maintain RoHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring regulatory and manufacturing process compatibility with the original TLC374MD.

Frequently Asked Questions (FAQ)

Q: Can the TLC374IDR be used as a direct replacement for the TLC374MD?

A: The TLC374IDR is electrically compatible within the overlapping supply voltage range (3V ~ 16V). The primary consideration is the operating temperature range: TLC374IDR operates from -40°C to 85°C, while TLC374MD operates from -55°C to 125°C. Applications requiring operation below -40°C or above 85°C require alternative selection.

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

A: Texas Instruments TLC374IDR maintains the same input offset voltage specification (5mV @ 5V) as the original TLC374MD. STMicroelectronics TS374 variants (TS374IDT and TS374CDT) feature lower input bias current (1pA versus 5pA) and reduced quiescent current (250µA versus 800µA), but with higher input offset voltage (10mV @ 5V). The TS374IDT extends the upper temperature limit to 125°C, matching the TLC374MD.

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

A: All substitute parts use the 14-SOIC package with identical pin configuration and physical dimensions (0.154" width, 3.90mm). Packaging format differs: TLC374IDR and TS374IDT are available in Cut Tape and Digi-Reel formats, while TS374CDT is supplied in Tape & Reel format. PCB assembly compatibility is maintained across all options.

Q: Which substitute part should be selected for extended temperature applications?

A: The TS374IDT supports the full temperature range of the TLC374MD (-40°C ~ 125°C). Applications requiring operation at temperatures below -40°C or above 85°C should specify the TS374IDT. The TLC374IDR is limited to -40°C ~ 85°C and the TS374CDT to 0°C ~ 70°C.

Q: Do the substitute parts maintain the same output current capability?

A: All substitute parts maintain 20mA typical output current, ensuring compatibility with existing load requirements and circuit designs.

Q: What is the impact of different input offset voltage specifications?

A: The TLC374MD and TLC374IDR specify 5mV maximum input offset voltage at 5V supply. The STMicroelectronics TS374 variants specify 10mV maximum. Applications with tight input offset voltage requirements should maintain the Texas Instruments option (TLC374IDR) or evaluate circuit-level compensation for the higher offset voltage of STMicroelectronics parts.