TLC3578IPWR Equivalent & Substitute Parts

Part Overview

The TLC3578IPWR is a 14-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring SAR (Successive Approximation Register) architecture. This device features 4 or 8 pseudo-differential and single-ended inputs with a 200 kSPS sampling rate and SPI data interface. The part is currently in Last Time Buy status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

TLC3578IPWR

Texas InstrumentsIn Stock: 1851TLC3578IPWR Datasheet

Current PartRFQ

ADS8678IDBTR

Texas InstrumentsIn Stock: 3055ADS8678IDBTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC3578IPWR is determined by the following critical parameters:

• Resolution: 14-bit ADC capability
• Sampling Rate: 200 kSPS minimum performance
• Input Configuration: Support for 4 or 8 channels with pseudo-differential and single-ended input types
• Data Interface: SPI protocol compatibility
• Architecture: SAR-based conversion
• Supply Voltage Compatibility: Analog supply at 5V and digital supply range of 2.7V ~ 5.5V
• Package Compatibility: Surface mount configuration with thermal and electrical characteristics suitable for 24-pin or equivalent footprints
• Compliance: ROHS3 compliance and MSL rating of 2 or better

The ADS8678IDBTR is identified as a manufacturer-recommended substitute based on Texas Instruments' product portfolio alignment and functional equivalence within the data acquisition category.

Parameter Comparison

Engineering Selection Recommendations

The TLC3578IPWR is designated as Last Time Buy, indicating that production will cease and no further availability is guaranteed beyond existing inventory. The ADS8678IDBTR is classified as Active product status, ensuring continued manufacturing support and long-term availability.

Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99) and equivalent moisture sensitivity ratings (MSL 2, 1 Year), supporting seamless integration into existing supply chain and quality management frameworks.

Selection of the ADS8678IDBTR for new designs or long-term production requirements is supported by its active product status and manufacturer backing within the Texas Instruments data acquisition portfolio.

Frequently Asked Questions (FAQ)

Q: What makes the ADS8678IDBTR a suitable substitute for the TLC3578IPWR?

A: Both devices are Texas Instruments data acquisition components with surface mount configurations, identical compliance ratings (ROHS3, MSL 2), and equivalent regulatory classifications. The ADS8678IDBTR maintains active product status, ensuring continued availability and support.

Q: Are there package compatibility considerations between these parts?

A: The TLC3578IPWR uses a 24-TSSOP package (0.173", 4.40mm Width), while the ADS8678IDBTR uses a 38-TFSOP package (0.173", 4.40mm Width). PCB layout modifications may be required to accommodate the different pin counts and package dimensions.

Q: Why is the TLC3578IPWR in Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued active production of this device. Existing inventory remains available, but no new manufacturing runs are planned. Transition to active alternatives is recommended for designs requiring long-term component availability.

Q: What compliance certifications apply to both parts?

A: Both the TLC3578IPWR and ADS8678IDBTR are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001. Both maintain MSL rating of 2 with a 1-year floor life.

Q: Should I redesign my PCB to use the ADS8678IDBTR?

A: PCB redesign considerations depend on your specific application requirements and the functional differences between the two devices. Consult the detailed datasheets for both parts to evaluate electrical performance, pin configuration, and thermal characteristics relative to your design specifications.