SN74LVC863ADBR Equivalent & Substitute Parts

Part Overview

The SN74LVC863ADBR is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 3.6V operation in a 24-SSOP surface mount package. This device functions as a 1-element, 9-bit transceiver with 3-state output capability and 24mA output drive current. The part is classified as obsolete, making identification of active equivalent alternatives essential for new designs and ongoing production support.

Substiute Parts

SN74LVC863ADBR

Texas InstrumentsIn Stock: 1058SN74LVC863ADBR Datasheet

Current PartRFQ

SN74LVC2952ADBR

Texas InstrumentsIn Stock: 884SN74LVC2952ADBR Datasheet

Parametric EquivalentRFQ

SN74LVC543ADBR

Texas InstrumentsIn Stock: 3328SN74LVC543ADBR Datasheet

Parametric EquivalentRFQ

SN74LVC646ADBR

Texas InstrumentsIn Stock: 26359SN74LVC646ADBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC863ADBR are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Output Type: 3-State
• Current - Output High, Low: 24mA, 24mA
• Voltage - Supply: 1.65V ~ 3.6V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 24-SSOP (0.209", 5.30mm Width)
• Mounting Type: Surface Mount

The substitute parts SN74LVC2952ADBR, SN74LVC543ADBR, and SN74LVC646ADBR meet all critical electrical parameters and package requirements. A functional difference exists in the number of bits per element: the SN74LVC863ADBR operates with 9 bits per element, while all three substitute parts operate with 8 bits per element. This difference reflects the functional architecture of each device and does not affect substitution eligibility when 8-bit transceiver functionality is acceptable for the application.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—SN74LVC2952ADBR, SN74LVC543ADBR, and SN74LVC646ADBR—are active products with current manufacturing status, providing long-term availability and supply chain stability compared to the obsolete SN74LVC863ADBR. Each substitute maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment for new designs.

SN74LVC646ADBR offers the highest inventory availability at 26,346 pieces in stock, followed by SN74LVC543ADBR at 3,315 pieces and SN74LVC2952ADBR at 807 pieces. All three parts maintain identical electrical specifications for supply voltage, operating temperature range, output current capability, and package footprint, ensuring direct functional compatibility in applications where 8-bit transceiver operation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC2952ADBR, SN74LVC543ADBR, or SN74LVC646ADBR directly replace the SN74LVC863ADBR?

A: Yes, all three parts are electrically and mechanically compatible substitutes. They share identical supply voltage ranges (1.65V ~ 3.6V), output current specifications (24mA), operating temperature range (-40°C ~ 85°C), and 24-SSOP package footprint. The functional difference is the number of bits per element: the SN74LVC863ADBR operates with 9 bits, while the substitutes operate with 8 bits. Substitution is valid when 8-bit transceiver functionality meets application requirements.

Q: Why is the SN74LVC863ADBR listed as obsolete?

A: The SN74LVC863ADBR is classified as obsolete by Texas Instruments. The active substitute parts provide equivalent functionality with ongoing manufacturing support and improved supply chain availability.

Q: Are all substitute parts in the same package?

A: Yes, all substitute parts use the 24-SSOP (0.209", 5.30mm Width) surface mount package, ensuring identical PCB footprint and assembly compatibility.

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

A: Yes, all substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original SN74LVC863ADBR.

Q: Which substitute part should I select based on availability?

A: Selection should be based on application requirements and supply chain needs. SN74LVC646ADBR has the highest inventory availability, while SN74LVC2952ADBR and SN74LVC543ADBR offer alternative sourcing options with lower stock levels.