TLC393CD Equivalent & Substitute Parts

Part Overview

The TLC393CD is a dual general-purpose comparator manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device features MOS open-drain output architecture and operates across a 3V to 16V supply voltage range. The TLC393CD is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring dual comparator functionality with these electrical characteristics.

Substiute Parts

TLC393CD

Texas InstrumentsIn Stock: 2023TLC393CD Datasheet

Current PartRFQ

TLC393CDR

Texas InstrumentsIn Stock: 7609TLC393CDR Datasheet

MFR RecommendedRFQ

TS393CDT

STMicroelectronicsIn Stock: 19101TS393CDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC393CD are qualified based on the following criteria:

Electrical Compatibility:

• Dual comparator configuration (2 elements)
• Open-drain output architecture
• Supply voltage range encompassing or exceeding 3V ~ 16V
• Input offset voltage maximum of 5mV @ 10V
• Output current capability of 20mA typical
• Operating temperature range of 0°C ~ 70°C

Mechanical Compatibility:

• 8-SOIC package with 0.154" (3.90mm) width
• Surface-mount mounting type
• Pin-compatible footprint

Compliance Requirements:

• ROHS3 compliance
• MSL rating of 1 (Unlimited)

The identified substitutes meet these criteria while maintaining functional equivalence for general-purpose comparator applications.

Parameter Comparison

Engineering Selection Recommendations

TLC393CDR (Texas Instruments): This part is the direct manufacturer-recommended substitute for the TLC393CD. It maintains identical electrical specifications and packaging, with the primary distinction being active product status and availability in Cut Tape and Digi-Reel packaging formats. The TLC393CDR is suitable for all applications currently using the TLC393CD without design modification.

TS393CDT (STMicroelectronics): The TS393CDT provides functional equivalence with extended supply voltage range capability (2.7V minimum versus 3V) and improved input bias current performance (1pA versus 5pA). The CMRR specification is lower at 71dB compared to 84dB for the TLC393CD. Quiescent current is reduced to 25µA. This part is appropriate for applications where lower input bias current and reduced quiescent current are beneficial, provided the lower CMRR specification is acceptable for the intended application.

Both substitutes are ROHS3 compliant with MSL rating of 1 and maintain the 8-SOIC package footprint and surface-mount compatibility.

Frequently Asked Questions (FAQ)

Q: Can TLC393CDR be used as a direct replacement for TLC393CD? A: Yes. The TLC393CDR is electrically and mechanically identical to the TLC393CD, with the same supply voltage range (3V ~ 16V), input offset voltage (5mV @ 10V), output current (20mA), and 8-SOIC package. The primary difference is product status (Active versus Last Time Buy) and packaging format availability.

Q: What are the key differences between TS393CDT and TLC393CD? A: The TS393CDT offers a lower minimum supply voltage (2.7V versus 3V), lower input bias current (1pA versus 5pA), and lower quiescent current (25µA versus 50µA). The CMRR is reduced from 84dB to 71dB. All three devices share the same 8-SOIC package, dual comparator configuration, and 20mA output current capability.

Q: Are all three parts pin-compatible? A: Yes. All three parts use the 8-SOIC package with identical pinout and footprint dimensions (0.154" width, 3.90mm). They are mechanically interchangeable on the PCB.

Q: Which substitute should I select for new designs? A: For new designs, either TLC393CDR or TS393CDT is appropriate. TLC393CDR maintains exact electrical specifications of the original TLC393CD. TS393CDT is suitable if lower input bias current or reduced quiescent current provides design benefits and the lower CMRR specification is acceptable.

Q: Are all parts RoHS compliant? A: Yes. TLC393CD, TLC393CDR, and TS393CDT are all ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What is the operating temperature range for these parts? A: All three parts operate across 0°C to 70°C.