74LVC543APW,112 Equivalent & Substitute Parts

Part Overview

The 74LVC543APW,112 is a non-inverting transceiver logic IC manufactured by NXP USA Inc., designed for 8-bit data transmission with 3-state output capability. This device operates across a supply voltage range of 1.2V to 3.6V and is housed in a 24-TSSOP package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. Substitute parts maintain functional compatibility while offering active product status and extended availability.

Substiute Parts

74LVC543APW,112

NXP USA Inc.In Stock: 109474LVC543APW,112 Datasheet

Current PartRFQ

74LCX543MTCX

Fairchild SemiconductorIn Stock: 295474LCX543MTCX Datasheet

MFR RecommendedRFQ

SN74LVC543ADBR

Texas InstrumentsIn Stock: 3328SN74LVC543ADBR Datasheet

MFR RecommendedRFQ

SN74LVC543APW

Texas InstrumentsIn Stock: 908SN74LVC543APW Datasheet

MFR RecommendedRFQ

SN74LVC543APWR

Texas InstrumentsIn Stock: 4108SN74LVC543APWR Datasheet

MFR RecommendedRFQ

SN74LVC543APWT

Texas InstrumentsIn Stock: 1508SN74LVC543APWT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LVC543APW,112 is determined by the following critical parameters:

Functional Equivalence Requirements:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State
• Output current capability: 24mA (high and low)

Electrical Compatibility Requirements:

• Supply voltage range must encompass or overlap with 1.2V ~ 3.6V
• Operating temperature range must support -40°C minimum
• Output current specifications must meet or exceed 24mA

Physical Compatibility Requirements:

• Package type: 24-TSSOP or 24-SSOP (both 0.173" or 0.209" width variants acceptable for surface mount applications)
• Mounting type: Surface Mount

Compliance Requirements:

• RoHS3 compliance maintained
• REACH unaffected status

The substitute parts listed below satisfy these criteria while offering active product status and improved availability compared to the obsolete main part.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original 74LVC543APW,112.

For applications requiring maximum temperature range (-40°C to 125°C): The original 74LVC543APW,112 supports extended temperature operation. Substitute parts operate to -40°C to 85°C maximum. Applications requiring temperatures above 85°C cannot use the listed substitutes.

For applications with minimum supply voltage below 1.65V: The 74LCX543MTCX (Fairchild) operates from 2V minimum, and all Texas Instruments substitutes operate from 1.65V minimum. The original part supports 1.2V minimum. Applications requiring operation below 1.65V require the original part or alternative sourcing.

For package-critical applications: The SN74LVC543ADBR uses 24-SSOP (0.209" width) versus the 24-TSSOP (0.173" width) used by the original and most substitutes. PCB layout and footprint compatibility must be verified for this variant.

For active product status and availability: All Texas Instruments variants (SN74LVC543ADBR, SN74LVC543APW, SN74LVC543APWR, SN74LVC543APWT) and the Fairchild 74LCX543MTCX offer active product status with established supply chains.

For packaging format requirements: SN74LVC543APWR and SN74LVC543APWT are available in Tape & Reel format for high-volume manufacturing. SN74LVC543APW is available in Tube format for lower-volume applications.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX543MTCX (Fairchild) be used as a direct replacement for the 74LVC543APW,112?

A: The 74LCX543MTCX is functionally equivalent in logic type, element count, bit width, output type, and output current. However, the minimum supply voltage is 2V versus 1.2V for the original part. If your application operates below 2V, this substitute is not suitable. The package type (24-TSSOP) and physical dimensions are identical.

Q: What is the difference between the Texas Instruments SN74LVC543 variants?

A: All Texas Instruments SN74LVC543 variants (ADBR, APW, APWR, APWT) share identical electrical specifications: 1.65V to 3.6V supply, -40°C to 85°C operating temperature, and 24mA output current. The differences are packaging format (Tape & Reel, Tube) and package type (24-SSOP for ADBR, 24-TSSOP for others). Selection depends on manufacturing process requirements and inventory management.

Q: Is the SN74LVC543ADBR compatible with the original 74LVC543APW,112 footprint?

A: The SN74LVC543ADBR uses a 24-SSOP package (0.209" width) while the original uses 24-TSSOP (0.173" width). Although both are surface-mount packages with 24 pins, the physical dimensions and pin spacing differ. PCB footprint compatibility must be verified before substitution.

Q: Can I use these substitutes in applications requiring operation above 85°C?

A: No. All listed substitutes have a maximum operating temperature of 85°C. The original 74LVC543APW,112 supports -40°C to 125°C. For high-temperature applications, alternative parts must be sourced.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (74LCX543MTCX, SN74LVC543ADBR, SN74LVC543APW, SN74LVC543APWR, SN74LVC543APWT) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original part.

Q: What is the minimum supply voltage for each substitute?

A: The 74LCX543MTCX operates from 2V minimum. All Texas Instruments variants (SN74LVC543ADBR, SN74LVC543APW, SN74LVC543APWR, SN74LVC543APWT) operate from 1.65V minimum. The original 74LVC543APW,112 operates from 1.2V minimum. Select based on your application's minimum supply voltage requirement.