TLC548IP Equivalent & Substitute Parts

Part Overview

The TLC548IP is an 8-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with SPI interface and operates across a 3V to 6V supply range. The device is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

TLC548IP

Texas InstrumentsIn Stock: 5114TLC548IP Datasheet

Current PartRFQ

ADC081S021CIMF/NOPB

Texas InstrumentsIn Stock: 25912ADC081S021CIMF/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLC548IP is determined by the following critical parameters:

• Resolution: 8-bit ADC architecture
• Input Configuration: Single-ended input, 1 channel
• Conversion Method: SAR (Successive Approximation Register)
• Digital Interface: SPI protocol support
• Supply Voltage Range: Compatibility with 3V to 6V operation
• Operating Temperature: -40°C to 85°C range
• Regulatory Compliance: ROHS3 and REACH compliance

The ADC081S021CIMF/NOPB meets these core functional requirements while offering enhanced specifications in sampling rate and supply voltage flexibility. Both devices maintain identical resolution, input configuration, and temperature operating range, establishing functional equivalence for data acquisition applications.

Parameter Comparison

Engineering Selection Recommendations

The ADC081S021CIMF/NOPB is the manufacturer-recommended substitute for the obsolete TLC548IP. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and commercial applications.

The substitute offers superior sampling rate performance (200k samples per second versus 45.5k), enabling higher-frequency signal acquisition. The ADC081S021CIMF/NOPB operates across a slightly narrower supply voltage range (2.7V to 5.25V) compared to the original device, requiring verification of system power supply specifications during integration.

The transition from through-hole 8-DIP packaging to surface-mount SOT-23-6 packaging necessitates PCB layout modifications. The substitute's internal reference voltage source eliminates the requirement for external reference circuitry, potentially simplifying board design.

Frequently Asked Questions (FAQ)

Q: Can the ADC081S021CIMF/NOPB directly replace the TLC548IP in existing designs?

A: Functional substitution is possible due to matching 8-bit resolution, single-ended input configuration, and SPI interface. However, packaging differences (8-DIP through-hole versus SOT-23-6 surface-mount) require PCB redesign. Supply voltage range differences (3V–6V versus 2.7V–5.25V) must be evaluated against system specifications.

Q: What are the key differences between these devices?

A: The primary differences are sampling rate (45.5k versus 200k samples per second), reference voltage architecture (external versus internal supply reference), and packaging format. The substitute provides higher conversion speed and integrated reference functionality.

Q: Is the narrower supply voltage range of the substitute a limitation?

A: The ADC081S021CIMF/NOPB operates from 2.7V to 5.25V, which overlaps the original 3V to 6V range. Systems operating above 5.25V require alternative solutions or voltage regulation.

Q: Does the internal reference voltage of the substitute affect circuit design?

A: Yes. The TLC548IP requires external reference voltage configuration, while the ADC081S021CIMF/NOPB uses the supply voltage as reference. This eliminates external reference components but requires stable power supply design.

Q: Are both devices suitable for industrial temperature applications?

A: Both devices operate across the -40°C to 85°C temperature range, supporting industrial applications within this specification.