SN74AS652NT Equivalent & Substitute Parts

Part Overview

The SN74AS652NT is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data transmission with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 24-pin DIP package for through-hole mounting applications.

The SN74AS652NT carries an Obsolete product status. Locating equivalent substitute parts is necessary for system redesign, board revision, or when original inventory becomes unavailable. The SN74AS652DW provides a functionally equivalent alternative with identical electrical specifications but differs in packaging and mounting technology.

Substiute Parts

SN74AS652NT

Texas InstrumentsIn Stock: 2079SN74AS652NT Datasheet

Current PartRFQ

SN74AS652DW

Texas InstrumentsIn Stock: 1021SN74AS652DW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AS652NT is determined by strict equivalence across the following electrical and functional parameters:

• Logic type and transceiver configuration (Non-Inverting)
• Element and bit-per-element count (1 Element, 8 Bit per Element)
• Output architecture (3-State)
• Output current specifications (15mA High, 48mA Low)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (0°C ~ 70°C)
• Base product number (74AS652)

The SN74AS652DW meets all electrical and functional requirements for substitution. The primary difference is packaging: the original uses a 24-pin DIP through-hole package, while the substitute uses a 24-pin SOIC surface-mount package. This distinction requires PCB layout and assembly process modifications but does not affect electrical performance or pin functionality.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS652DW is the direct electrical equivalent to the SN74AS652NT. Both components share identical logic specifications, output characteristics, and supply voltage requirements. The SN74AS652DW carries Active product status, ensuring continued availability and manufacturing support from Texas Instruments, whereas the original part is Obsolete.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for modern electronics manufacturing. MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints for either component.

Selection between these parts depends on PCB design constraints. The SN74AS652NT requires through-hole mounting and DIP footprint accommodation. The SN74AS652DW requires surface-mount assembly capability and SOIC footprint design. Electrical performance and functional behavior are identical across both package types.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS652DW directly replace the SN74AS652NT on an existing PCB?

A: No. The SN74AS652NT uses a 24-pin DIP through-hole package, while the SN74AS652DW uses a 24-pin SOIC surface-mount package. PCB layout and footprint redesign is required. Pin functionality and electrical specifications are identical, but physical mounting differs.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both components share identical logic type, bit configuration, output current ratings, supply voltage range, and operating temperature specifications. Substitution is electrically valid when package constraints are addressed.

Q: Why is the SN74AS652NT listed as Obsolete?

A: The SN74AS652NT has reached end-of-life status with Texas Instruments. The SN74AS652DW in SOIC packaging represents the active product line continuation for this logic function.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the SN74AS652NT and SN74AS652DW are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of MSL rating 1 (Unlimited)?

A: MSL 1 indicates the component has no moisture sensitivity limitations. Both parts can be stored and handled without moisture-control precautions, simplifying logistics and inventory management.