TLC2543MJ Equivalent & Substitute Parts

Part Overview

The TLC2543MJ is a 12-bit, 66 KSPS analog-to-digital converter manufactured by Texas Instruments, designed for data acquisition applications requiring moderate resolution and sampling rates. This device features 11 single-ended inputs, SAR architecture, and operates from 4.5V to 5.5V supply voltage. The TLC2543MJ is classified as Last Time Buy, indicating discontinued production status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

TLC2543MJ

Texas InstrumentsIn Stock: 828TLC2543MJ Datasheet

Current PartRFQ

ADS1258IPHPREP

Texas InstrumentsIn Stock: 39503ADS1258IPHPREP Datasheet

MFR RecommendedRFQ

TLC2543MJB

Texas InstrumentsIn Stock: 3162TLC2543MJB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLC2543MJ are categorized based on functional equivalence and parametric compatibility. The substitution logic is determined by the following critical parameters:

Parametric Equivalence Criteria:

• Resolution (Number of Bits): 12-bit
• Sampling Rate: 66 KSPS
• Number of Inputs: 11
• Input Type: Single Ended
• Data Interface: Serial
• Architecture: SAR
• Supply Voltage Range: 4.5V ~ 5.5V
• Reference Type: External
• Operating Temperature Range: -55°C ~ 125°C
• Package Type: 20-CDIP Through Hole

Substitute Categories:

1. Parametric Equivalent - Parts maintaining identical electrical specifications and functional performance within the same package form factor.
2. Manufacturer Recommended Substitute - Parts offering enhanced specifications or alternative architectures recommended by the manufacturer for new designs, with functional compatibility considerations.

Parameter Comparison

Engineering Selection Recommendations

TLC2543MJB - Parametric Equivalent:

The TLC2543MJB is the direct parametric equivalent to the TLC2543MJ. Both devices share identical electrical specifications: 12-bit resolution, 66 KSPS sampling rate, 11 single-ended inputs, SAR architecture, serial data interface, and external reference configuration. Both operate within the 4.5V to 5.5V supply voltage range and support the -55°C to 125°C operating temperature range. The TLC2543MJB is packaged in the same 20-CDIP through-hole form factor, enabling direct pin-compatible replacement. The TLC2543MJB maintains Active product status, ensuring continued availability and supply chain support. Both devices are ROHS3 compliant. This part is the recommended first choice for direct substitution in existing designs.

ADS1258IPHPREP - Manufacturer Recommended Substitute:

The ADS1258IPHPREP is designated as the manufacturer-recommended substitute for new design implementations. This device offers enhanced specifications including 24-bit resolution, 125 KSPS sampling rate, and support for both differential and single-ended input configurations with 8 or 16 input channels. The ADS1258IPHPREP employs Sigma-Delta architecture and SPI data interface, differing from the TLC2543MJ's SAR architecture and serial interface. The device is packaged in 48-PowerTQFP surface-mount form factor, requiring PCB layout modifications compared to the through-hole 20-CDIP package. The ADS1258IPHPREP operates from 2.7V to 5.25V digital supply and 5V analog supply, with operating temperature range of -40°C to 105°C. This part is Active status and ROHS3 compliant with MSL 3 moisture sensitivity rating. Selection of this substitute requires design-level evaluation due to architectural differences, package changes, and interface modifications.

Frequently Asked Questions (FAQ)

Q: Can TLC2543MJB be used as a direct replacement for TLC2543MJ?

A: Yes. The TLC2543MJB is a parametric equivalent with identical electrical specifications, pin configuration, and package form factor. Direct pin-compatible replacement is supported without design modifications.

Q: What are the key differences between TLC2543MJ and ADS1258IPHPREP?

A: The ADS1258IPHPREP differs in multiple aspects: resolution (24-bit vs. 12-bit), sampling rate (125 KSPS vs. 66 KSPS), architecture (Sigma-Delta vs. SAR), data interface (SPI vs. Serial), input configuration (8/16 differential/single-ended vs. 11 single-ended), package type (48-PowerTQFP surface-mount vs. 20-CDIP through-hole), and operating temperature range (-40°C to 105°C vs. -55°C to 125°C).

Q: Is the ADS1258IPHPREP a pin-compatible replacement?

A: No. The ADS1258IPHPREP uses a different package (48-PowerTQFP vs. 20-CDIP), different pin count, and different data interface protocol. PCB redesign and firmware modifications are required for implementation.

Q: Why is TLC2543MJ marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Existing inventory is available for final orders, but long-term availability is not guaranteed. Transition to active alternatives such as TLC2543MJB or ADS1258IPHPREP is recommended for future designs.

Q: What is the operating temperature difference between TLC2543MJ and ADS1258IPHPREP?

A: TLC2543MJ operates from -55°C to 125°C, while ADS1258IPHPREP operates from -40°C to 105°C. Applications requiring extended low-temperature operation below -40°C must retain TLC2543MJ or TLC2543MJB.

Q: Are both substitute parts ROHS3 compliant?

A: Yes. TLC2543MJB and ADS1258IPHPREP are both ROHS3 compliant, matching the compliance status of the original TLC2543MJ.

Q: What mounting considerations apply to each substitute?

A: TLC2543MJB maintains through-hole mounting identical to TLC2543MJ, supporting existing PCB designs. ADS1258IPHPREP requires surface-mount assembly, necessitating PCB layout modifications and updated assembly processes.

Q: Can ADS1258IPHPREP be used in applications requiring 11 input channels?

A: The ADS1258IPHPREP supports 8 or 16 input configurations, not 11. Applications requiring exactly 11 channels must use TLC2543MJ or TLC2543MJB.