TLV1504ID Equivalent & Substitute Parts

Part Overview

The TLV1504ID is a 10-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for data acquisition applications requiring single-ended input processing. This device features 4 input channels, a SAR (Successive Approximation Register) architecture, and SPI digital interface, operating across a supply voltage range of 2.7V to 5.5V. The TLV1504ID is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure continued design support and procurement availability for new production runs and long-term system maintenance.

Substiute Parts

TLV1504ID

Texas InstrumentsIn Stock: 879TLV1504ID Datasheet

Current PartRFQ

ADS7954SDBTR

Texas InstrumentsIn Stock: 3132ADS7954SDBTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ADS7954SDBTR qualifies as a substitute for the TLV1504ID based on the following core electrical and mechanical parameters:

Matching Parameters:

• Resolution: 10 bits
• Number of Input Channels: 4
• Input Type: Single Ended
• Architecture: SAR
• Digital Interface: SPI
• Configuration: MUX-S/H-ADC
• Ratio S/H:ADC: 1:1
• Number of A/D Converters: 1
• RoHS Compliance: ROHS3 Compliant
• Manufacturer: Texas Instruments

Substitution Basis: The ADS7954SDBTR maintains functional equivalence in core ADC specifications (resolution, channel count, input type, and interface protocol). Both devices employ identical SAR architecture with multiplexed sample-and-hold and single ADC configuration, ensuring software and firmware compatibility at the digital interface level. The supply voltage ranges overlap within the 2.7V to 5.25V window, supporting common power supply designs.

Parameter Comparison

Engineering Selection Recommendations

The ADS7954SDBTR is the designated manufacturer substitute for the TLV1504ID. Selection of the ADS7954SDBTR is supported by the following factors:

Product Status: The TLV1504ID is in Last Time Buy status, indicating discontinued production. The ADS7954SDBTR maintains Active product status with ongoing manufacturing support from Texas Instruments.

Compliance & Certifications: Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and production transitions.

Functional Compatibility: Core ADC specifications (10-bit resolution, 4 single-ended inputs, SAR architecture, SPI interface) are identical, supporting direct firmware and software compatibility without protocol modifications.

Performance Enhancement: The ADS7954SDBTR provides increased sampling rate (1 MHz versus 200 kSPS) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), offering design margin for demanding applications.

Package Consideration: The ADS7954SDBTR uses 30-TSSOP packaging versus the TLV1504ID's 16-SOIC package. PCB layout redesign is required; however, the increased pin count and package size provide improved thermal characteristics and signal integrity.

Frequently Asked Questions (FAQ)

Q: Can the ADS7954SDBTR directly replace the TLV1504ID without firmware changes?

A: Yes, at the digital interface level. Both devices implement identical SPI protocol, 10-bit resolution, and 4-channel multiplexed architecture. Firmware modifications are not required for basic ADC operation. However, the increased sampling rate capability of the ADS7954SDBTR may enable performance optimization if the application design is updated to utilize higher conversion rates.

Q: What are the package differences, and do they affect circuit design?

A: The TLV1504ID uses 16-SOIC (0.154" width) packaging, while the ADS7954SDBTR uses 30-TSSOP (0.173" width) packaging. The ADS7954SDBTR's larger package requires PCB layout redesign, including modified footprint, trace routing, and decoupling capacitor placement. Pin assignments differ; refer to device datasheets for pinout verification.

Q: Are the supply voltage ranges compatible with existing power supplies?

A: The analog supply voltage ranges overlap (2.7V to 5.25V common window). The TLV1504ID supports 2.7V to 5.5V analog supply, while the ADS7954SDBTR supports 2.7V to 5.25V. For designs operating above 5.25V, the TLV1504ID specifications must be maintained. The ADS7954SDBTR's digital supply supports lower voltage operation (1.7V to 5.25V), enabling single-supply designs with reduced power consumption.

Q: What is the impact of different operating temperature ranges?

A: The TLV1504ID operates from -40°C to 85°C, while the ADS7954SDBTR extends to -40°C to 125°C. For applications requiring operation above 85°C, the ADS7954SDBTR provides extended thermal margin. Applications limited to 85°C maximum do not require design modification.

Q: How does the moisture sensitivity level (MSL) difference affect handling and storage?

A: The TLV1504ID has MSL 1 (unlimited shelf life), while the ADS7954SDBTR has MSL 2 (1-year shelf life from manufacturing date). MSL 2 components require controlled storage conditions and have defined reflow window limitations. Procurement and inventory management procedures must account for the 1-year moisture sensitivity window for the ADS7954SDBTR.

Q: Is the higher sampling rate of the ADS7954SDBTR (1 MHz vs. 200 kSPS) a requirement for substitution?

A: No. The higher sampling rate is a performance enhancement, not a substitution requirement. Applications designed for 200 kSPS operation will function correctly with the ADS7954SDBTR at reduced sampling rates. The increased capability provides design flexibility for future performance optimization without requiring immediate firmware changes.