TMS320C6745CPTPD4 Equivalent & Substitute Parts

Part Overview

The TMS320C6745CPTPD4 is a fixed/floating-point digital signal processor (DSP) from Texas Instruments' TMS320C674x series, designed for embedded applications requiring high-performance signal processing. This device features a 456MHz clock rate, 320kB on-chip RAM, and comprehensive interface support including Ethernet MAC, SPI, UART, and USB connectivity.

The TMS320C6745CPTPD4 is classified as obsolete. Identifying equivalent substitute parts is necessary to ensure continued availability for system maintenance, production continuity, and long-term component sourcing strategies.

Substiute Parts

TMS320C6745CPTPD4

Texas InstrumentsIn Stock: 912TMS320C6745CPTPD4 Datasheet

Current PartRFQ

TMS320C6745DPTPD4

Texas InstrumentsIn Stock: 65860TMS320C6745DPTPD4 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMS320C6745CPTPD4 is determined by strict alignment across the following critical parameters:

• Identical processor series (TMS320C674x)
• Matching clock rate (456MHz)
• Identical on-chip RAM capacity (320kB)
• Matching core and I/O voltage specifications (1.20V core, 3.30V I/O)
• Identical operating temperature range (-40°C ~ 90°C)
• Identical package and pinout (176-LQFP Exposed Pad, 176-HLQFP 24x24)
• Matching interface set (EBI/EMI, Ethernet MAC, I2C, McASP, SPI, UART, USB)
• Equivalent compliance certifications (ROHS3, MSL 4)

The substitute part identified meets all these criteria, with the primary distinction being product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The TMS320C6745DPTPD4 is the direct substitute for the obsolete TMS320C6745CPTPD4. Both devices are functionally and electrically identical across all specified parameters, including processor architecture, clock frequency, memory configuration, voltage requirements, thermal operating range, and interface capabilities.

The primary distinction is product lifecycle status: the TMS320C6745DPTPD4 maintains active production status with significantly higher inventory availability (65,780 units versus 816 units). Both parts maintain equivalent compliance certifications under ROHS3 and REACH standards, with identical MSL ratings.

For new designs or production continuity, the TMS320C6745DPTPD4 is the appropriate selection due to active manufacturer support and sustained component availability.

Frequently Asked Questions (FAQ)

Q: Are the TMS320C6745CPTPD4 and TMS320C6745DPTPD4 pin-compatible?

A: Yes. Both devices use the identical 176-HLQFP (24x24) package with 176-LQFP Exposed Pad configuration. Pin assignments, signal definitions, and electrical characteristics are identical, enabling direct substitution on existing PCB layouts without design modification.

Q: What is the difference between the "C" and "D" designations in these part numbers?

A: The letter designation indicates product lifecycle status. The "C" variant (TMS320C6745CPTPD4) is obsolete, while the "D" variant (TMS320C6745DPTPD4) maintains active production status. The functional and electrical specifications remain unchanged.

Q: Can the TMS320C6745DPTPD4 be used as a direct replacement in existing systems designed for the TMS320C6745CPTPD4?

A: Yes. The devices are electrically and functionally equivalent across all specified parameters. No firmware, software, or hardware modifications are required for substitution.

Q: What is the significance of the packaging difference (unspecified versus Tray)?

A: Packaging configuration affects component handling, storage, and assembly processes but does not impact electrical performance or functionality. The Tray packaging of the TMS320C6745DPTPD4 is standard for active production components and is compatible with automated assembly equipment.

Q: Are both parts compliant with current environmental and trade regulations?

A: Yes. Both the TMS320C6745CPTPD4 and TMS320C6745DPTPD4 are ROHS3 compliant and REACH unaffected, meeting current environmental standards for electronic components.