SN74HCT652NT Equivalent & Substitute Parts

Part Overview

The SN74HCT652NT is a non-inverting transceiver IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is classified as obsolete in its original through-hole packaging configuration. Due to its obsolete status, identifying functionally equivalent substitute parts with active product status is essential for ongoing system design and production requirements.

Substiute Parts

SN74HCT652NT

Texas InstrumentsIn Stock: 2132SN74HCT652NT Datasheet

Current PartRFQ

SN74HCT652DWR

Texas InstrumentsIn Stock: 980SN74HCT652DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HCT652NT is determined by strict equivalence across the following critical parameters:

• Logic Function: Transceiver, Non-Inverting topology with identical 1 Element, 8 Bit per Element configuration
• Electrical Characteristics: Matching output current specifications (6mA, 6mA), supply voltage range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C)
• Output Configuration: 3-State output capability for bus-oriented applications
• Compliance Standards: ROHS3 compliance and REACH unaffected status maintained
• Packaging Compatibility: Mechanical and electrical pin compatibility required

The SN74HCT652DWR qualifies as a direct substitute based on identical electrical and functional parameters, with the primary distinction being the transition from through-hole to surface-mount packaging.

Parameter Comparison

Engineering Selection Recommendations

The SN74HCT652DWR is the manufacturer-recommended substitute for the obsolete SN74HCT652NT. Both components maintain identical electrical specifications, functional characteristics, and compliance certifications. The transition from through-hole (24-DIP) to surface-mount (24-SOIC) packaging represents the primary design consideration for implementation.

Selection of the SN74HCT652DWR is supported by:

• Active product status ensuring long-term availability and supply chain continuity
• Full electrical and functional equivalence across all specified parameters
• Maintained ROHS3 compliance and REACH unaffected status
• Identical MSL rating (1 - Unlimited) for storage and handling requirements

Frequently Asked Questions (FAQ)

Q: Can the SN74HCT652DWR directly replace the SN74HCT652NT in existing designs?

A: Electrical and functional replacement is direct. Physical board layout modification is required due to packaging differences: the SN74HCT652NT uses 24-DIP through-hole mounting while the SN74HCT652DWR uses 24-SOIC surface-mount configuration.

Q: Are the pin configurations identical between these parts?

A: Both components maintain the same logical pin assignments for the 8-bit transceiver function. Physical pin spacing and mounting requirements differ due to package type differences.

Q: What is the primary reason for substitution?

A: The SN74HCT652NT is classified as obsolete. The SN74HCT652DWR maintains active product status, ensuring availability for new production and ongoing system support.

Q: Are compliance certifications maintained in the substitute part?

A: Yes. Both the SN74HCT652NT and SN74HCT652DWR maintain ROHS3 compliance, REACH unaffected status, and identical MSL ratings.

Q: What design considerations apply when switching from through-hole to surface-mount packaging?

A: PCB layout redesign is required to accommodate the 24-SOIC footprint. Soldering process parameters differ between through-hole and surface-mount assembly methods. Component placement density may increase with surface-mount technology.