TLC548CDG4 Equivalent & Substitute Parts

Part Overview

The TLC548CDG4 is an 8-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input applications with a 1 SAR architecture and SPI data interface. This component is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production needs.

Substiute Parts

TLC548CDG4

Texas InstrumentsIn Stock: 741TLC548CDG4 Datasheet

Current PartRFQ

TLC548CD

Texas InstrumentsIn Stock: 2470TLC548CD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC548CDG4 is determined by strict equivalence across the following critical parameters:

• Resolution: 8-bit ADC
• Sampling Rate: 45.5k samples per second
• Input Configuration: Single-ended, 1 input channel
• Data Interface: SPI protocol
• Architecture: Successive Approximation Register (SAR)
• Reference: External reference requirement
• Supply Voltage Range: 3V to 6V (both analog and digital)
• Package: 8-SOIC form factor
• Operating Temperature Range: 0°C to 70°C

The substitute part TLC548CD meets all these parameters and is therefore functionally equivalent for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The TLC548CD is the manufacturer-recommended substitute for the TLC548CDG4. Both components share identical electrical specifications, package form factor, and compliance certifications. The TLC548CD maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original part.

Selection between the two parts should be based on availability and supply chain considerations. The TLC548CD offers greater inventory availability (2360 units versus 696 units), providing improved procurement reliability for production environments.

Frequently Asked Questions (FAQ)

Q: Can the TLC548CD be used as a direct replacement for the TLC548CDG4?

A: Yes. Both parts are functionally equivalent across all electrical parameters, including resolution, sampling rate, input configuration, data interface, supply voltage range, and operating temperature. The 8-SOIC package is identical, enabling direct PCB substitution without design modification.

Q: Are there differences in compliance or certifications between these parts?

A: No. Both the TLC548CDG4 and TLC548CD maintain identical RoHS3 compliance, REACH unaffected status, and ECCN/HTSUS classifications.

Q: What is the significance of the packaging designation difference (CDG4 versus CD)?

A: The suffix designations reflect manufacturing date codes and packaging variations within the same base product family (TLC548). The electrical and functional specifications remain identical.

Q: Why is the TLC548CD listed as obsolete while the TLC548CDG4 is discontinued?

A: Both parts have reached end-of-life status. Obsolete designation indicates the part is no longer manufactured; discontinued at DiGi Electronics indicates removal from that distributor's active catalog. Both statuses necessitate substitute identification for ongoing applications.

Q: Are there alternative part numbers beyond TLC548CD for this application?

A: The substitute list identifies ADC081S021CIMF/NOPB as an additional alternative. Verification of functional equivalence across all application-specific parameters is required for this part.