TLC5540CNSR Equivalent & Substitute Parts

Part Overview

The TLC5540CNSR is an 8-bit flash analog-to-digital converter (ADC) manufactured by Texas Instruments, designed for single-ended input data acquisition applications. It features a 40 MHz sampling rate, parallel data interface, and operates from dual 5V supply rails. The device is packaged in a 24-SOIC surface-mount configuration.

The TLC5540CNSR is classified as obsolete. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

TLC5540CNSR

Texas InstrumentsIn Stock: 2264TLC5540CNSR Datasheet

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TLC5540INSR

Texas InstrumentsIn Stock: 1794TLC5540INSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC5540CNSR is determined by the following critical parameters:

• Resolution: 8 bits
• Sampling Rate: 40 MHz
• Input Configuration: Single-ended, single input
• Data Interface: Parallel output
• Architecture: Flash ADC topology
• Supply Voltages: 5V analog and digital
• Package: 24-SOIC form factor
• Mounting: Surface mount

The TLC5540INSR qualifies as a direct substitute based on identical electrical specifications across all core functional parameters and mechanical compatibility. The primary distinction is product status and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TLC5540INSR is the qualified substitute for the TLC5540CNSR. Both devices are manufactured by Texas Instruments and share identical electrical and mechanical specifications.

The TLC5540INSR offers the following advantages:

• Active product status ensures ongoing availability and manufacturing support
• Extended operating temperature range (-40°C to 85°C) provides broader environmental compatibility compared to the obsolete TLC5540CNSR (0°C to 70°C)
• Identical RoHS3 compliance and REACH status maintain regulatory alignment
• Equivalent MSL rating and packaging specifications ensure drop-in compatibility

Selection of the TLC5540INSR is appropriate for new designs, system upgrades, and legacy system maintenance where the extended temperature range does not conflict with application requirements.

Frequently Asked Questions (FAQ)

Q: Can the TLC5540INSR directly replace the TLC5540CNSR in existing designs?

A: Yes. Both devices are electrically and mechanically identical across all functional parameters. The 24-SOIC package, pin configuration, and signal characteristics are equivalent. Substitution requires no circuit modifications.

Q: What is the primary difference between these two parts?

A: The TLC5540CNSR is obsolete with an operating temperature range of 0°C to 70°C. The TLC5540INSR is an active product with an extended operating temperature range of -40°C to 85°C. Both share identical electrical specifications and packaging.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN and HTSUS classifications. Regulatory requirements are equivalent.

Q: Does packaging differ between these parts?

A: Both devices use 24-SOIC (0.209", 5.30mm width) surface-mount packaging. The TLC5540INSR is supplied in Tape & Reel format, while the TLC5540CNSR packaging format is not specified. Both are compatible with standard PCB assembly processes.

Q: What is the moisture sensitivity level for these devices?

A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Should I consider the extended temperature range of the TLC5540INSR for my application?

A: The extended temperature range (-40°C to 85°C) of the TLC5540INSR provides greater environmental flexibility. If your application operates within the original TLC5540CNSR range (0°C to 70°C), both parts are functionally equivalent. For applications requiring operation outside this range, the TLC5540INSR is the appropriate choice.