74AC541PC Equivalent & Substitute Parts

Part Overview

The 74AC541PC is a non-inverting buffer IC manufactured by onsemi, designed for logic signal buffering applications with 3-state output capability. This device features 1 element with 8 bits per element, operating across a 2V to 6V supply voltage range. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

74AC541PC

onsemiIn Stock: 318474AC541PC Datasheet

Current PartRFQ

CD74AC541E

Texas InstrumentsIn Stock: 4237CD74AC541E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC541PC is determined by the following critical parameters:

• Logic Function: Buffer, Non-Inverting topology with identical element and bit configuration (1 element, 8 bits per element)
• Output Characteristics: 3-State output with matching current specifications (24mA high and low)
• Package Compatibility: 20-DIP form factor with 0.300" (7.62mm) pitch for through-hole mounting
• Series Classification: 74AC logic family designation
• Electrical Performance: Supply voltage range and output drive capability

The CD74AC541E from Texas Instruments meets all substitution criteria within the allowed parameter set for this product category.

Parameter Comparison

Engineering Selection Recommendations

The CD74AC541E is a direct functional equivalent for the 74AC541PC. Both devices share identical logic topology, output configuration, and package specifications. The CD74AC541E offers extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) and operates across a slightly narrower supply voltage window (1.5V to 5.5V versus 2V to 6V). The CD74AC541E maintains active product status with ROHS3 compliance, providing long-term availability and regulatory alignment compared to the obsolete 74AC541PC.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC541E directly replace the 74AC541PC in existing designs?

A: Yes. Both devices feature identical logic function, output drive capability (24mA), 3-state output configuration, and 20-DIP package geometry. Pin-for-pin compatibility is maintained.

Q: What are the voltage supply differences between these parts?

A: The 74AC541PC operates from 2V to 6V, while the CD74AC541E operates from 1.5V to 5.5V. The CD74AC541E supports lower minimum voltage but has a slightly lower maximum rating. Designs operating within the 1.5V to 5.5V window are fully compatible with both devices.

Q: Are there temperature range considerations for substitution?

A: The CD74AC541E supports an extended operating temperature range (-55°C to 125°C) compared to the 74AC541PC (-40°C to 85°C). Applications requiring the full 74AC541PC temperature range must operate within the CD74AC541E's specified limits.

Q: Is the 20-DIP package identical between both parts?

A: Yes. Both devices use the 20-DIP (0.300", 7.62mm) through-hole package with identical pin pitch and mounting requirements.

Q: What is the compliance status difference?

A: The CD74AC541E is ROHS3 compliant with active product status, ensuring regulatory compliance and long-term supply availability. The 74AC541PC is obsolete and compliance status is not specified.