TLC5540IPWRG4 Equivalent & Substitute Parts

Part Overview

The TLC5540IPWRG4 is an 8-bit flash analog-to-digital converter manufactured by Texas Instruments, designed for single-ended input applications with a 40 MHz sampling rate. This component operates with external voltage references and dual 5V supply rails (analog and digital). The part is classified as obsolete, making identification of active equivalent alternatives essential for new designs and production continuity.

Substiute Parts

TLC5540IPWRG4

Texas InstrumentsIn Stock: 842TLC5540IPWRG4 Datasheet

Current PartRFQ

TLC5540INSR

Texas InstrumentsIn Stock: 1794TLC5540INSR Datasheet

MFR RecommendedRFQ

TLC5540IPWR

Texas InstrumentsIn Stock: 1293TLC5540IPWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLC5540IPWRG4 is determined by strict equivalence across the following critical parameters:

• Resolution: 8 bits
• Sampling Rate: 40 MHz
• Input Configuration: 1 single-ended input
• Data Interface: Parallel output
• Architecture: Flash ADC
• Reference Configuration: External reference
• Supply Voltages: 5V analog and 5V digital
• Operating Temperature: -40°C to 85°C
• Mounting: Surface mount

Substitute parts are grouped into two categories based on packaging differences:

1. MFR Recommended Substitute (Package Variant): TLC5540INSR — Same die and electrical specifications with 24-SOIC packaging instead of 24-TSSOP, representing a package-level alternative suitable for designs where SOIC footprint compatibility exists.

2. Parametric Equivalent (Same Package): TLC5540IPWR — Identical electrical specifications and 24-TSSOP packaging as the original part, with active product status and improved moisture sensitivity rating.

Parameter Comparison

Engineering Selection Recommendations

For Direct PCB Replacement: Select TLC5540IPWR. This part maintains identical 24-TSSOP packaging and footprint compatibility with the original TLC5540IPWRG4. Both parts carry ROHS3 compliance and equivalent moisture sensitivity ratings. TLC5540IPWR holds active product status, ensuring long-term availability and supply chain stability.

For Package-Flexible Designs: Select TLC5540INSR when PCB layout permits 24-SOIC footprint accommodation. This manufacturer-recommended alternative offers superior moisture sensitivity (MSL 1, unlimited shelf life versus MSL 2, 1 year), reducing handling and storage risk. The wider 5.30mm package body requires layout verification but delivers identical electrical performance.

Compliance Considerations: All three parts maintain ROHS3 compliance and EAR99 export classification. Selection between active substitutes (TLC5540INSR and TLC5540IPWR) should prioritize the active product status of both alternatives over the obsolete main part number.

Frequently Asked Questions (FAQ)

Q: Can TLC5540INSR replace TLC5540IPWRG4 on existing PCBs?

A: TLC5540INSR is electrically equivalent but uses 24-SOIC packaging versus the original 24-TSSOP. Direct PCB replacement is not possible without layout modification. The SOIC package is wider (5.30mm versus 4.40mm), requiring footprint redesign. Use TLC5540IPWR for direct replacement.

Q: What is the difference between TLC5540IPWR and TLC5540INSR?

A: Both are active Texas Instruments products with identical electrical specifications (8-bit, 40 MHz, single-ended input, external reference, 5V supplies). The primary difference is packaging: TLC5540IPWR uses 24-TSSOP (same as original), while TLC5540INSR uses 24-SOIC. TLC5540INSR offers improved moisture sensitivity (MSL 1 unlimited versus MSL 2, 1 year).

Q: Why is the original TLC5540IPWRG4 marked obsolete?

A: Product obsolescence reflects Texas Instruments' lifecycle management. Active alternatives (TLC5540IPWR and TLC5540INSR) provide equivalent functionality with improved availability and compliance status. New designs should specify active part numbers.

Q: Are all three parts ROHS3 compliant?

A: Yes. TLC5540IPWRG4, TLC5540INSR, and TLC5540IPWR all carry ROHS3 compliance certification. All are REACH unaffected and classified as EAR99 for export purposes.

Q: What is the moisture sensitivity difference between the parts?

A: TLC5540IPWRG4 and TLC5540IPWR both carry MSL 2 (1 year shelf life). TLC5540INSR carries MSL 1 (unlimited shelf life), indicating superior moisture resistance and reduced handling constraints during storage and assembly.

Q: Can I use these parts interchangeably in my design?

A: TLC5540IPWR and TLC5540IPWRG4 are directly interchangeable (same package, same electrical specifications). TLC5540INSR requires PCB layout modification due to different package geometry but delivers identical electrical performance and superior moisture characteristics.