SN74LS365AD Equivalent & Substitute Parts

Part Overview

The SN74LS365AD is a Buffer, Non-Inverting logic IC manufactured by Texas Instruments, designed for 3-State output applications in 16-SOIC surface mount packaging. This component operates within a 4.75V to 5.25V supply voltage range and is rated for 0°C to 70°C operating temperature. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for existing applications.

Substiute Parts

SN74LS365AD

Texas InstrumentsIn Stock: 963SN74LS365AD Datasheet

Current PartRFQ

SN74LS365ADR

Texas InstrumentsIn Stock: 2395SN74LS365ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS365AD is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Non-Inverting configuration
• Number of Elements: 1 element
• Number of Bits per Element: 6 bits
• Output Type: 3-State output capability
• Current Specifications: Output High 2.6mA, Output Low 24mA
• Voltage Supply Range: 4.75V ~ 5.25V
• Operating Temperature Range: 0°C ~ 70°C
• Package Type: 16-SOIC surface mount
• Base Product Number: 74LS365 series

The SN74LS365ADR qualifies as a direct manufacturer-recommended substitute, maintaining identical electrical and mechanical specifications while differing only in packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The SN74LS365ADR is the manufacturer-recommended substitute for the SN74LS365AD. Both parts maintain identical electrical performance, thermal characteristics, and mechanical compatibility. The primary distinction is product status: the SN74LS365AD is Last Time Buy (discontinued), while the SN74LS365ADR remains in Active production status with higher inventory availability (2300 Pcs versus 893 Pcs).

Both parts carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment. The packaging difference (Tube versus Tape & Reel) does not affect functional compatibility but may influence procurement logistics and assembly line integration. Selection between these parts should be based on supply chain requirements and production volume considerations.

Frequently Asked Questions (FAQ)

Q: Can SN74LS365ADR be used as a direct replacement for SN74LS365AD in existing designs?

A: Yes. The SN74LS365ADR is electrically and mechanically identical to the SN74LS365AD. All functional parameters, including logic type, bit configuration, output characteristics, voltage supply range, and operating temperature specifications are equivalent. The parts are pin-compatible and footprint-compatible in 16-SOIC surface mount applications.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging (SN74LS365AD) is typically used for lower-volume orders and manual assembly processes. Tape & Reel packaging (SN74LS365ADR) is designed for automated pick-and-place assembly and higher-volume production runs. Both formats contain the same component with identical electrical specifications.

Q: Why is SN74LS365AD marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74LS365ADR, which remains in Active status, is the recommended path forward for continued supply. Customers should transition to the active part number to ensure long-term availability.

Q: Are there any compliance or certification differences between these parts?

A: No. Both SN74LS365AD and SN74LS365ADR carry identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited) ratings. Regulatory and environmental compliance is equivalent across both part numbers.

Q: What are the critical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching: Logic Type (Buffer, Non-Inverting), Number of Elements (1), Bits per Element (6), Output Type (3-State), Current specifications (2.6mA High, 24mA Low), Supply Voltage (4.75V ~ 5.25V), Operating Temperature (0°C ~ 70°C), and Package Type (16-SOIC surface mount). All parameters must match exactly for functional equivalence.