TLV1544IPW Equivalent & Substitute Parts

Part Overview

The TLV1544IPW 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 digital interface. The device operates across a wide supply voltage range of 2.7V to 5.5V and maintains performance across industrial temperature ranges from -40°C to 85°C.

The TLV1544IPW is currently in Last Time Buy status, indicating that Texas Instruments has discontinued or will discontinue production. This status necessitates identification of equivalent substitute components to ensure design continuity and long-term product availability for new designs or production runs.

Substiute Parts

TLV1544IPW

Texas InstrumentsIn Stock: 1008TLV1544IPW Datasheet

Current PartRFQ

ADC104S021CIMMX/NOPB

Texas InstrumentsIn Stock: 4399ADC104S021CIMMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV1544IPW is determined by the following critical parameters that must remain compatible:

• Resolution: 10-bit conversion capability
• Input Configuration: 4 single-ended analog inputs
• Digital Interface: SPI protocol support
• Architecture: SAR-based analog-to-digital conversion
• Supply Voltage Compatibility: Operating range must encompass or be compatible with 2.7V ~ 5.5V
• Temperature Range: -40°C ~ 85°C industrial operation
• Package Compatibility: Surface mount technology with pinout compatibility

The ADC104S021CIMMX/NOPB qualifies as a direct substitute based on these parameters. While the substitute exhibits higher sampling rate (200 kSPS vs. 87 kSPS) and different packaging (10-VSSOP vs. 16-TSSOP), these represent functional improvements and do not prevent substitution when PCB layout and pinout mapping are accommodated.

Parameter Comparison

Engineering Selection Recommendations

The ADC104S021CIMMX/NOPB is the qualified substitute for the TLV1544IPW based on the following engineering criteria:

Functional Equivalence: Both devices share identical 10-bit resolution, 4-channel single-ended input configuration, and SAR architecture. SPI digital interface compatibility is confirmed on the substitute device.

Compliance and Certification: Both components maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited). The substitute carries AEC-Q100 automotive qualification, providing additional reliability assurance.

Product Availability: The substitute is in Active production status with 4291 pieces in stock, compared to the main part's Last Time Buy status with 929 pieces available. This ensures long-term supply chain continuity.

Performance Characteristics: The substitute's 200 kSPS sampling rate exceeds the original 87 kSPS specification, providing performance headroom without introducing compatibility issues. The supply voltage range of 2.7V ~ 5.25V is compatible with designs operating within this window.

Design Considerations: Package transition from 16-TSSOP to 10-VSSOP requires PCB layout modification and pinout verification. Pin-to-pin compatibility must be validated during design migration.

Frequently Asked Questions (FAQ)

Q: Can the ADC104S021CIMMX/NOPB directly replace the TLV1544IPW without PCB modifications?

A: No. While functionally equivalent, the package types differ (16-TSSOP vs. 10-VSSOP), requiring PCB layout redesign and pinout remapping. Pin assignments must be verified against both datasheets before implementation.

Q: What is the impact of the higher sampling rate (200 kSPS vs. 87 kSPS) on system design?

A: The higher sampling rate of the substitute represents improved performance and does not negatively impact designs. Systems designed for 87 kSPS operation will function correctly with the faster substitute. No design changes are required to accommodate this specification improvement.

Q: Are the supply voltage ranges compatible between the two devices?

A: The substitute's supply voltage range (2.7V ~ 5.25V) is slightly narrower than the original (2.7V ~ 5.5V). Designs operating at 5.5V supply voltage require verification that the substitute's 5.25V maximum rating is acceptable. Designs operating within 2.7V ~ 5.25V are fully compatible.

Q: What certifications and compliance standards apply to the substitute?

A: The ADC104S021CIMMX/NOPB maintains ROHS3 compliance identical to the original part. Additionally, it carries AEC-Q100 automotive qualification, indicating enhanced reliability testing and qualification for automotive applications.

Q: How do the digital interface options differ between the two devices?

A: The original TLV1544IPW supports SPI interface only. The substitute ADC104S021CIMMX/NOPB supports both SPI and DSP interfaces. Existing SPI-based designs require no modification; the additional DSP interface capability is optional.

Q: What is the significance of the Last Time Buy status for the TLV1544IPW?

A: Last Time Buy status indicates Texas Instruments has ceased or will cease production of this component. Existing inventory (929 pieces) represents the final available stock. New designs should transition to the active substitute to ensure long-term component availability and supply chain stability.