TMS320C28343ZHHT Equivalent & Substitute Parts

Part Overview

The TMS320C28343ZHHT is a 32-bit floating-point digital signal processor from Texas Instruments' C2000 Delfino family, designed for embedded control and signal processing applications. This device operates at 200MHz with integrated CAN, SPI, I2C, and McBSP interfaces, supported by 260kB on-chip RAM and 16kB ROM. The part is classified as obsolete, making identification of active equivalent components essential for ongoing system support and new design implementations.

Substiute Parts

TMS320C28343ZHHT

Texas InstrumentsIn Stock: 1076TMS320C28343ZHHT Datasheet

Current PartRFQ

TMS320C28343ZAYT

Texas InstrumentsIn Stock: 1102TMS320C28343ZAYT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMS320C28343ZHHT is determined by strict equivalence across the following critical parameters:

• Identical clock rate (200MHz)
• Matching memory configuration (260kB RAM, 16kB ROM)
• Identical core and I/O voltage specifications (1.10V core, 3.30V I/O)
• Same interface set (CAN, EBI/EMI, I2C, McBSP, SCI, SPI)
• Compatible package footprint (179-LFBGA)
• Matching operating temperature range (-40°C to 105°C)
• Equivalent compliance certifications (ROHS3, REACH Unaffected)

The TMS320C28343ZAYT qualifies as a direct substitute based on full parameter alignment across all electrical and mechanical specifications. The primary distinction is product status: the ZAYT variant is active, whereas the ZHHT is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The TMS320C28343ZAYT is the direct active equivalent for the obsolete TMS320C28343ZHHT. Both devices maintain identical electrical specifications, memory architecture, and interface capabilities. The ZAYT variant is recommended for new designs and ongoing production due to its active product status, ensuring continued availability and manufacturer support. Both parts satisfy ROHS3 compliance and REACH regulatory requirements. The minor packaging designation difference (MicroStar versus NFBGA) does not affect functional compatibility, as both maintain the 179-pin BGA footprint with 12x12mm dimensions.

Frequently Asked Questions (FAQ)

Q: Can the TMS320C28343ZAYT directly replace the TMS320C28343ZHHT in existing designs?

A: Yes. Both devices are electrically and mechanically equivalent across all specified parameters, including clock rate, memory configuration, voltage levels, operating temperature range, and interface set. PCB layout and firmware remain unchanged.

Q: What is the significance of the packaging designation difference (MicroStar versus NFBGA)?

A: Both designations refer to the same 179-pin BGA package with 12x12mm dimensions. The nomenclature difference reflects supplier or manufacturing process variations but does not affect electrical performance or physical compatibility.

Q: Why is the TMS320C28343ZHHT classified as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The TMS320C28343ZAYT provides functional continuity with active production status and manufacturer support.

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

A: No. Both devices carry identical ROHS3 compliance and REACH Unaffected status, with matching MSL ratings of 3 (168 Hours).

Q: What interfaces are supported by both devices?

A: Both the ZHHT and ZAYT support CAN, EBI/EMI, I2C, McBSP, SCI, and SPI interfaces, enabling direct substitution in applications requiring these communication protocols.