SN74ALS29863NT Equivalent & Substitute Parts

Part Overview

The SN74ALS29863NT is a non-inverting transceiver logic integrated circuit manufactured by Texas Instruments, designed for 9-bit bidirectional data transmission with 3-state output capability. 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 classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations where legacy compatibility is required.

Substiute Parts

SN74ALS29863NT

Texas InstrumentsIn Stock: 1024SN74ALS29863NT Datasheet

Current PartRFQ

SN74ALS29863DW

Texas InstrumentsIn Stock: 920SN74ALS29863DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS29863NT is determined by strict equivalence across the following critical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 9
• Output Type: 3-State
• Current Ratings: 24mA (High), 48mA (Low)
• Supply Voltage Range: 4.75V ~ 5.25V
• Operating Temperature Range: 0°C ~ 70°C
• Series Classification: 74ALS

The SN74ALS29863DW is identified as a manufacturer-recommended substitute. This part maintains identical electrical specifications and functional characteristics while differing only in physical packaging format and mounting technology. The substitute transitions from through-hole to surface-mount implementation, enabling compatibility with modern PCB assembly processes while preserving all core transceiver functionality.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS29863DW is the designated manufacturer substitute for the obsolete SN74ALS29863NT. Both components maintain identical electrical performance specifications, including output current ratings, supply voltage tolerance, and operating temperature range. The primary distinction is packaging format: the main part uses 24-pin DIP through-hole technology, while the substitute employs 24-pin SOIC surface-mount technology.

Selection between these parts depends on PCB assembly methodology. The SN74ALS29863NT remains suitable for through-hole assembly processes and legacy board designs. The SN74ALS29863DW is appropriate for surface-mount assembly and modern manufacturing environments. Both parts carry ROHS3 compliance and unlimited moisture sensitivity classification, ensuring regulatory and environmental compatibility.

The active product status of the SN74ALS29863DW provides supply chain continuity and ongoing manufacturer support, whereas the obsolete status of the SN74ALS29863NT may present long-term availability constraints.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS29863DW directly replace the SN74ALS29863NT in existing designs?

A: Electrical substitution is complete. The SN74ALS29863DW provides identical transceiver functionality, output current capacity, and voltage specifications. Physical substitution requires PCB redesign to accommodate the transition from 24-DIP through-hole to 24-SOIC surface-mount packaging.

Q: What are the key differences between these parts?

A: The parts are electrically identical. Differences are limited to mounting technology (through-hole versus surface-mount) and package form factor (DIP versus SOIC). Both maintain the same pin count (24), supply voltage range (4.75V ~ 5.25V), and output current ratings (24mA high, 48mA low).

Q: Why is the SN74ALS29863NT classified as obsolete?

A: The SN74ALS29863NT has reached end-of-life status with Texas Instruments. The SN74ALS29863DW represents the active continuation of this product line in surface-mount format, reflecting industry transition toward modern assembly technologies.

Q: Are there compliance or certification differences?

A: Both parts carry identical ROHS3 compliance and unlimited moisture sensitivity classification (MSL 1). No regulatory or environmental differences exist between the two components.

Q: What is the pin compatibility between these packages?

A: Both parts maintain 24-pin configurations with identical pin assignments for the transceiver function. Pin-to-pin electrical compatibility is complete. Physical PCB layout must be adapted to accommodate the different package geometries.