TLV1544CPWR Equivalent & Substitute Parts

Part Overview

The TLV1544CPWR is a 10-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring 4 single-ended analog inputs with SPI interface. The device operates across a supply voltage range of 2.7V to 5.5V and features a 87 kSPS sampling rate with SAR (Successive Approximation Register) architecture. Currently classified as Last Time Buy, this part requires identification of active alternative solutions for new designs and ongoing production support.

Substiute Parts

TLV1544CPWR

Texas InstrumentsIn Stock: 2867TLV1544CPWR Datasheet

Current PartRFQ

ADC104S021CIMMX/NOPB

Texas InstrumentsIn Stock: 4399ADC104S021CIMMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV1544CPWR is determined by the following critical parameters that must remain compatible:

• Resolution: 10-bit conversion capability
• Input Configuration: 4 single-ended analog inputs
• Interface Protocol: SPI communication
• Architecture: SAR-based analog to digital conversion
• Supply Voltage Compatibility: Overlapping analog and digital supply ranges
• Sampling Rate: Minimum performance threshold for real-time data acquisition
• Package Compatibility: Physical form factor and pin count considerations

The ADC104S021CIMMX/NOPB qualifies as a direct substitute based on matching resolution, input count, interface protocol, and SAR architecture. While this substitute introduces enhanced performance characteristics and extended temperature range, the core functional parameters remain aligned with the original specification.

Parameter Comparison

Engineering Selection Recommendations

The ADC104S021CIMMX/NOPB is qualified as a functional substitute for the TLV1544CPWR based on matching core specifications: 10-bit resolution, 4 single-ended inputs, SPI interface, and SAR architecture. Both devices maintain ROHS3 compliance and surface mount packaging.

The substitute part offers enhanced performance characteristics including higher sampling rate (200k vs 87k SPS) and extended operating temperature range (-40°C to 85°C vs 0°C to 70°C). The ADC104S021CIMMX/NOPB carries Active product status with AEC-Q100 automotive qualification, providing long-term availability assurance compared to the Last Time Buy status of the original part.

Supply voltage ranges overlap within the 2.7V to 5.25V window, ensuring compatibility with existing power distribution designs. Package form factor differs (10-VSSOP vs 16-TSSOP), requiring PCB layout modification and verification of pin assignment alignment during implementation.

Frequently Asked Questions (FAQ)

Q: Can the ADC104S021CIMMX/NOPB directly replace the TLV1544CPWR without design changes?

A: Functional substitution is possible due to matching resolution, input count, and interface protocol. However, package form factor differs (10-VSSOP vs 16-TSSOP), requiring PCB redesign and pin assignment verification. Supply voltage ranges are compatible within the 2.7V to 5.25V overlap window.

Q: What are the key differences between these two parts?

A: The substitute part provides higher sampling rate (200k vs 87k SPS), extended operating temperature range (-40°C to 85°C vs 0°C to 70°C), and Active product status. Both maintain 10-bit resolution, 4 single-ended inputs, and SPI interface compatibility.

Q: Is the ADC104S021CIMMX/NOPB suitable for automotive applications?

A: Yes. The substitute part carries AEC-Q100 automotive qualification, making it suitable for automotive-grade applications. The original TLV1544CPWR does not specify automotive qualification.

Q: How do the package differences affect implementation?

A: The TLV1544CPWR uses 16-TSSOP packaging while the ADC104S021CIMMX/NOPB uses 10-VSSOP packaging. This difference requires PCB layout modification, new footprint design, and complete pin assignment verification before implementation.

Q: Are both parts RoHS compliant?

A: Yes. Both the TLV1544CPWR and ADC104S021CIMMX/NOPB are ROHS3 compliant, meeting environmental and regulatory requirements.

Q: What is the impact of the higher sampling rate on system design?

A: The substitute part's 200k SPS sampling rate exceeds the original 87k SPS specification, enabling faster data acquisition. Existing designs operating at lower sampling rates remain compatible, though the enhanced performance may require firmware or software adjustment to utilize the increased capability.