TLC2543ING4 Equivalent & Substitute Parts

Part Overview

The TLC2543ING4 is a 12-bit Analog to Digital Converter (ADC) with 11 single-ended inputs, utilizing a Successive Approximation Register (SAR) architecture. This device features an integrated multiplexer and sample-and-hold circuit, communicating via SPI interface. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

TLC2543ING4

Texas InstrumentsIn Stock: 898TLC2543ING4 Datasheet

Current PartRFQ

TLC2543IN

Texas InstrumentsIn Stock: 3389TLC2543IN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLC2543ING4 is determined by strict equivalence across the following critical parameters:

• 12-bit resolution
• 11 single-ended input channels
• 66 kSPS sampling rate
• SPI digital interface
• SAR architecture with integrated multiplexer and sample-and-hold
• External reference configuration
• 5V analog and digital supply requirements
• 20-DIP through-hole package
• Operating temperature range of -40°C to 85°C

The TLC2543IN meets all these criteria and is identified as the manufacturer-recommended substitute. Both parts share identical base product designation (TLC2543) and maintain full functional and pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TLC2543IN is the direct functional equivalent of the TLC2543ING4. Both devices are manufactured by Texas Instruments and maintain identical electrical specifications, pin configuration, and package format. The TLC2543IN carries ROHS3 compliance and REACH unaffected status, consistent with the original part.

Selection between these parts should be based on availability and packaging format. The TLC2543ING4 is discontinued at DiGi Electronics, while the TLC2543IN is listed as obsolete but maintains higher inventory availability (3352 pcs vs. 878 pcs). Both parts are suitable for direct substitution in existing designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the TLC2543IN be used as a direct replacement for the TLC2543ING4?

A: Yes. Both parts are identical in electrical function, pin configuration, and package format. No circuit modifications are required for substitution.

Q: What is the difference between the TLC2543ING4 and TLC2543IN?

A: The primary difference is product status and packaging format. The TLC2543ING4 is discontinued at DiGi Electronics, while the TLC2543IN is obsolete. The TLC2543IN is supplied in tube packaging, whereas the TLC2543ING4 packaging format is not specified in available data.

Q: Are there any compliance differences between these parts?

A: No. Both parts maintain ROHS3 compliance and REACH unaffected status. ECCN and HTSUS classifications are identical.

Q: What supply voltages are required for operation?

A: Both the analog and digital supply voltages are 5V. An external reference voltage is required for ADC operation.

Q: Is the 20-DIP package suitable for modern PCB designs?

A: The 20-DIP through-hole package is a legacy format. While suitable for through-hole assembly, designs requiring surface-mount technology should evaluate alternative ADC devices with compatible specifications in SMD packages.

Q: What is the maximum sampling rate for these devices?

A: The maximum sampling rate is 66 kSPS (kilosamples per second) across all 11 input channels.