MM74HCT541N Equivalent & Substitute Parts

Part Overview

The MM74HCT541N is a non-inverting buffer logic integrated circuit manufactured by onsemi, designed for 8-bit buffering applications with 3-state output capability. This device operates within the 74HCT logic family standard and is rated for supply voltages between 4.5V and 5.5V. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy design support.

Substiute Parts

MM74HCT541N

onsemiIn Stock: 1543MM74HCT541N Datasheet

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CD74HCT541E

Harris CorporationIn Stock: 2319CD74HCT541E Datasheet

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SN74HCT541N

Texas InstrumentsIn Stock: 3162SN74HCT541N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MM74HCT541N are qualified based on the following criteria:

• Logic Function: Buffer, Non-Inverting with identical 1 Element, 8 Bit per Element configuration
• Output Configuration: 3-State output type
• Supply Voltage Range: 4.5V ~ 5.5V compatibility
• Package Type: 20-DIP (0.300", 7.62mm) form factor with Through Hole mounting
• Base Product Number: 74HCT541 series designation

The substitute parts CD74HCT541E and SN74HCT541N meet all core functional and mechanical requirements for direct substitution in applications requiring the MM74HCT541N.

Parameter Comparison

Engineering Selection Recommendations

SN74HCT541N (Texas Instruments) is the preferred substitute for new designs and ongoing production applications. This part maintains active product status, ensuring long-term availability and supply chain stability. The SN74HCT541N is ROHS3 compliant, meeting current environmental and regulatory requirements. Operating temperature range (-40°C ~ 85°C) matches the original MM74HCT541N specification, ensuring thermal compatibility in existing system designs.

CD74HCT541E (Harris Corporation) provides functional equivalence with extended operating temperature range (-55°C ~ 125°C), suitable for applications requiring broader thermal performance. However, this part carries obsolete status and RoHS non-compliant designation, limiting its use to legacy system maintenance where regulatory compliance is not a requirement.

Both substitute parts deliver identical logic functionality, output drive capability within acceptable margins, and mechanical compatibility through the standard 20-DIP package format.

Frequently Asked Questions (FAQ)

Q: Can SN74HCT541N directly replace MM74HCT541N in existing circuit boards?

A: Yes. Both parts share identical logic function, 3-state output configuration, 20-DIP package dimensions, and supply voltage range (4.5V ~ 5.5V). Through-hole mounting is identical, enabling direct socket substitution without circuit board modification.

Q: What is the difference in output current between the main part and substitutes?

A: MM74HCT541N specifies 7.2mA output current (high and low), while CD74HCT541E and SN74HCT541N specify 6mA. Both substitute parts deliver sufficient drive capability for standard 74HCT logic loading. Applications with marginal current budgets should verify load requirements against the lower 6mA specification.

Q: Why is SN74HCT541N recommended over CD74HCT541E?

A: SN74HCT541N maintains active product status, ensuring continued availability and supply chain support. It is ROHS3 compliant, meeting current environmental regulations. CD74HCT541E is obsolete and RoHS non-compliant, suitable only for legacy system repairs where regulatory compliance is not applicable.

Q: Are there temperature range differences between substitutes?

A: MM74HCT541N and SN74HCT541N operate across -40°C ~ 85°C. CD74HCT541E extends to -55°C ~ 125°C. For applications within the -40°C ~ 85°C range, all three parts are thermally compatible. Extended temperature applications require CD74HCT541E.

Q: What packaging formats are available for these parts?

A: All three parts are supplied in 20-DIP (0.300", 7.62mm) through-hole package format. MM74HCT541N and SN74HCT541N are available in tube packaging. CD74HCT541E is supplied in tube packaging. Package format does not affect electrical or mechanical compatibility.