TLC2543CFNG3 Equivalent & Substitute Parts

Part Overview

The TLC2543CFNG3 is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring moderate sampling rates and multiple input channels. This device features 11 single-ended inputs with a SAR (Successive Approximation Register) architecture and SPI digital interface, operating from a 5V supply in both analog and digital domains.

The TLC2543CFNG3 is classified as Last Time Buy, indicating that Texas Instruments has discontinued or will discontinue production. Identifying equivalent substitute parts is essential for maintaining design continuity, ensuring long-term component availability, and supporting ongoing production or maintenance requirements.

Substiute Parts

TLC2543CFNG3

Texas InstrumentsIn Stock: 785TLC2543CFNG3 Datasheet

Current PartRFQ

TLC2543CFN

Texas InstrumentsIn Stock: 60332TLC2543CFN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC2543CFNG3 is determined by strict equivalence across the following critical parameters:

• Resolution and Sampling Rate: 12-bit resolution at 66 kSPS
• Channel Configuration: 11 single-ended input channels
• Architecture and Interface: SAR architecture with SPI digital communication
• Supply Voltage Requirements: 5V analog and digital supplies
• Package and Pinout: 20-PLCC (9x9) surface mount package
• Reference Configuration: External reference type
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The TLC2543CFN meets all these criteria as a direct parametric equivalent, differing only in packaging designation (tube vs. alternative packaging formats) while maintaining identical electrical specifications and pinout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the TLC2543CFNG3 and TLC2543CFN are Last Time Buy products from Texas Instruments, indicating that neither part will remain in production indefinitely. Selection between these parts should be based on current inventory availability and procurement timelines.

The TLC2543CFN offers significantly higher inventory availability (60,300 pieces) compared to the TLC2543CFNG3 (692 pieces), making it the preferred choice for new designs or production runs requiring extended component supply.

Both parts maintain identical electrical specifications, pinout compatibility, and compliance certifications (ROHS3, MSL Level 1), ensuring direct functional interchangeability in existing circuit designs without modification to PCB layout or firmware.

Frequently Asked Questions (FAQ)

Q: Can the TLC2543CFN be used as a direct replacement for the TLC2543CFNG3?

A: Yes. Both parts are parametrically equivalent with identical electrical specifications, pinout, package type (20-PLCC 9x9), and compliance ratings. No circuit modifications are required.

Q: What is the difference between TLC2543CFNG3 and TLC2543CFN?

A: The primary difference is packaging designation and inventory availability. Both parts share the same die, electrical performance, and pinout. The suffix variation reflects different packaging or distribution formats from Texas Instruments.

Q: Are there any temperature or supply voltage differences between these parts?

A: No. Both parts operate identically across the 0°C to 70°C temperature range and require 5V analog and digital supplies.

Q: What is the significance of the Last Time Buy status?

A: Last Time Buy indicates that Texas Instruments has announced end-of-life for this product line. Customers should secure adequate inventory for long-term requirements, as neither part will be available indefinitely.

Q: Is the 20-PLCC package pinout identical between both parts?

A: Yes. Both the TLC2543CFNG3 and TLC2543CFN use the same 20-PLCC (9x9) surface mount package with identical pinout and electrical connections.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements.