74LVC543AD,112 Equivalent & Substitute Parts

Part Overview

The 74LVC543AD,112 is a non-inverting transceiver logic integrated circuit manufactured by NXP USA Inc. in the 74LVC series. This device functions as a 1-element, 8-bit transceiver with 3-state output capability, designed for low-voltage CMOS applications. The part is currently classified as obsolete, making identification of functionally equivalent active alternatives necessary for ongoing design support and procurement.

Substiute Parts

74LVC543AD,112

NXP USA Inc.In Stock: 79074LVC543AD,112 Datasheet

Current PartRFQ

SN74LVC543ADW

Texas InstrumentsIn Stock: 783SN74LVC543ADW Datasheet

MFR RecommendedRFQ

SN74LVC543ADWR

Texas InstrumentsIn Stock: 12022SN74LVC543ADWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC543AD,112 is based on strict equivalence of the following critical parameters:

• Logic type: Transceiver, Non-Inverting
• Number of elements: 1
• Number of bits per element: 8
• Output type: 3-State
• Output current capability: 24mA, 24mA
• Package / Case: 24-SOIC (0.295", 7.50mm Width)
• Series compatibility: 74LVC

The identified substitute parts maintain functional and pin-level compatibility with the original device. Both substitute parts are manufactured by Texas Instruments and are classified as active products, ensuring long-term availability and support. The substitutes operate within overlapping voltage and temperature ranges suitable for the 74LVC543AD,112 application space.

Parameter Comparison

Engineering Selection Recommendations

Both SN74LVC543ADW and SN74LVC543ADWR are direct functional equivalents to the 74LVC543AD,112. The Texas Instruments alternatives maintain identical logic functionality, pin configuration, and electrical performance within the specified operating ranges. Both substitute parts are active products with established supply chains, providing superior long-term availability compared to the obsolete NXP device.

The primary distinction between the two Texas Instruments options is packaging format: SN74LVC543ADW is supplied in tube packaging, while SN74LVC543ADWR is supplied in tape and reel format. Selection between these variants depends on procurement volume and assembly process requirements. Both parts satisfy ROHS3 compliance and REACH requirements equivalent to the original device.

The operating temperature range of the substitute parts (-40°C ~ 85°C) is narrower than the original (-40°C ~ 125°C). Applications requiring operation above 85°C must evaluate this limitation against specific thermal requirements. The minimum supply voltage of the substitutes (1.65V) is higher than the original (1.2V), which must be considered for ultra-low-voltage applications.

Frequently Asked Questions (FAQ)

Q: Are SN74LVC543ADW and SN74LVC543ADWR pin-compatible with 74LVC543AD,112?

A: Yes. Both Texas Instruments parts maintain identical pin configuration and functional equivalence with the NXP device. Direct substitution is possible without circuit modification.

Q: What is the difference between SN74LVC543ADW and SN74LVC543ADWR?

A: Both parts are electrically identical. The difference is packaging format: ADW is supplied in tube packaging for lower-volume applications, while ADWR is supplied in tape and reel format for high-volume automated assembly.

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

A: The Texas Instruments substitutes are rated to -40°C ~ 85°C, which is narrower than the original 74LVC543AD,112 specification of -40°C ~ 125°C. Applications requiring higher temperature operation must evaluate alternative solutions or confirm that actual operating conditions remain within the substitute part's thermal limits.

Q: Are there voltage supply compatibility concerns?

A: The substitute parts operate at 1.65V ~ 3.6V, while the original operates at 1.2V ~ 3.6V. Applications using supply voltages between 1.2V and 1.65V must use the original NXP part or identify alternative solutions. Most standard 3.3V and 5V logic applications will operate within the substitute parts' voltage range.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both SN74LVC543ADW and SN74LVC543ADWR are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1) as the original 74LVC543AD,112.