74HC7030D,652 Equivalent & Substitute Parts

Part Overview

The 74HC7030D,652 is an asynchronous/synchronous FIFO (First-In-First-Out) memory circuit manufactured by NXP USA Inc. It provides 576 bits of storage (64 x 9 configuration) with uni-directional data flow, operating at 33MHz with 36ns access time. The device is designed for surface mount applications in the 28-SOIC package and operates across a 2V to 6V supply voltage range.

This part is classified as obsolete. Finding equivalent or substitute components is necessary to support legacy system maintenance, design updates, or when original inventory becomes unavailable.

Substiute Parts

74HC7030D,652

NXP USA Inc.In Stock: 81674HC7030D,652 Datasheet

Current PartRFQ

SN74LVC646APWR

Texas InstrumentsIn Stock: 859SN74LVC646APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC7030D,652 is constrained by its specific FIFO architecture and electrical characteristics. The primary substitute identified is the SN74LVC646APWR from Texas Instruments.

Substitution logic is based on the following allowed parameters:

• Logic category compatibility (both are logic ICs)
• Surface mount packaging capability
• Operating voltage range overlap or compatibility
• RoHS3 compliance status
• Active product status for continued availability

The SN74LVC646APWR operates as a transceiver with 3-state output capability, providing an alternative solution for applications requiring similar logic-level signal handling. However, functional differences exist between the original FIFO architecture and the substitute transceiver design.

Parameter Comparison

Engineering Selection Recommendations

The SN74LVC646APWR is an active product from Texas Instruments with ROHS3 compliance, ensuring continued availability and regulatory alignment. Its active status provides advantages for long-term supply chain stability compared to the obsolete 74HC7030D,652.

Key considerations for selection:

• The SN74LVC646APWR operates at a lower maximum supply voltage (3.6V vs. 6V), requiring verification that system voltage levels are compatible.
• The operating temperature range of the substitute is narrower (-40°C to 85°C vs. -40°C to 125°C), which may be a constraint in high-temperature applications.
• Package differences exist: 28-SOIC versus 24-TSSOP, requiring PCB layout modifications.
• Both devices maintain ROHS3 compliance and EAR99 export classification.

Selection should be based on specific application requirements regarding voltage levels, temperature operating range, and physical package constraints.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC646APWR directly replace the 74HC7030D,652 without circuit modifications?

A: Direct replacement is not possible due to functional architecture differences (FIFO vs. transceiver), package differences (28-SOIC vs. 24-TSSOP), and voltage supply range variations. Circuit redesign and PCB layout changes are required.

Q: What is the primary reason the 74HC7030D,652 is classified as obsolete?

A: The part is no longer manufactured by NXP USA Inc. and has been discontinued from active production. Substitute components must be evaluated for new designs or legacy system maintenance.

Q: Are both parts RoHS compliant?

A: Yes, both the 74HC7030D,652 and SN74LVC646APWR are ROHS3 compliant, meeting environmental and regulatory requirements for electronic components.

Q: What are the package differences between these parts?

A: The 74HC7030D,652 uses a 28-SOIC package (0.295", 7.50mm width), while the SN74LVC646APWR uses a 24-TSSOP package (0.173", 4.40mm width). Different pin counts and physical dimensions require PCB redesign.

Q: Is the operating temperature range compatible between these parts?

A: The 74HC7030D,652 operates from -40°C to 125°C, while the SN74LVC646APWR operates from -40°C to 85°C. Applications requiring temperatures above 85°C cannot use the substitute without alternative solutions.

Q: What voltage levels are supported by each part?

A: The 74HC7030D,652 supports 2V to 6V supply voltage, while the SN74LVC646APWR supports 1.65V to 3.6V. System voltage compatibility must be verified before substitution.