SN74HCT541APWR Equivalent & Substitute Parts

Part Overview

The SN74HCT541APWR is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments. This device functions as a 1-element, 8-bit buffer with 3-state output capability, designed for signal buffering and line driving applications in digital logic systems. The part is currently in active production status. Substitute parts become necessary when the primary part experiences supply constraints, inventory depletion, or when alternative packaging formats are required for specific manufacturing processes.

Substiute Parts

SN74HCT541APWR

Texas InstrumentsIn Stock: 5685SN74HCT541APWR Datasheet

Current PartRFQ

SN74HCT541PW

Texas InstrumentsIn Stock: 3296SN74HCT541PW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HCT541APWR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 6mA, 6mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount

The substitute part SN74HCT541PW meets all mandatory matching parameters and is therefore classified as a parametric equivalent. Variations in product status, packaging format (tube vs. reel), inventory availability, and supplier discontinuation status do not affect functional or electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The SN74HCT541PW is a direct parametric equivalent to the SN74HCT541APWR. Both parts are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the same 20-TSSOP package. Both parts maintain ROHS3 compliance and MSL Level 1 rating.

The primary distinction between these parts is product status: the SN74HCT541APWR maintains active production status, while the SN74HCT541PW is discontinued at DiGi Electronics. Selection between these parts should be based on availability and supply chain requirements. The SN74HCT541APWR is recommended for new designs and long-term production runs due to its active status. The SN74HCT541PW may be selected only when inventory is available and supply continuity is not a concern.

Frequently Asked Questions (FAQ)

Q: Can SN74HCT541PW be used as a direct replacement for SN74HCT541APWR?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, output drive capability, supply voltage range, operating temperature range, and package configuration. The 20-TSSOP package dimensions and pinout are identical.

Q: What is the difference between SN74HCT541APWR and SN74HCT541PW?

A: The parts are electrically and functionally identical. The difference is product status: SN74HCT541APWR is in active production, while SN74HCT541PW is discontinued at DiGi Electronics. Packaging format differs (tube vs. unspecified), but this does not affect electrical performance.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts operate within the same voltage range (4.5V ~ 5.5V), support the same temperature range (-40°C ~ 85°C), and provide identical output drive current (6mA high and low). PCB layout and circuit design require no modification.

Q: Does the 20-TSSOP package remain the same for both parts?

A: Yes. Both the SN74HCT541APWR and SN74HCT541PW use the 20-TSSOP package with 0.173" width (4.40mm). Footprint, pinout, and land pattern are identical.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, indicating no special moisture handling requirements during storage or assembly.