TMS320C6746AZWT3 Equivalent & Substitute Parts

Part Overview

The TMS320C6746AZWT3 is a fixed/floating-point digital signal processor (DSP) from Texas Instruments, designed for embedded applications requiring high-performance signal processing. This device operates at 300MHz with integrated interfaces including Ethernet MAC, I2C, McASP, McBSP, SPI, UART, and USB connectivity. The part is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

TMS320C6746AZWT3

Texas InstrumentsIn Stock: 912TMS320C6746AZWT3 Datasheet

Current PartRFQ

TMS320C6746EZWT3

Texas InstrumentsIn Stock: 1000402TMS320C6746EZWT3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TMS320C6746AZWT3 is determined by the following critical parameters:

• Series compatibility: Both parts must belong to the TMS320C674x series
• Package compatibility: Identical 361-LFBGA (361-NFBGA 16x16) package
• Interface set: Matching EBI/EMI, Ethernet MAC, Host Interface, I2C, McASP, McBSP, SPI, UART, and USB interfaces
• Memory configuration: Identical 488kB on-chip RAM and 1.088MB ROM
• Voltage rails: Compatible core and I/O voltage specifications
• Operating temperature range: Matching 0°C ~ 90°C thermal envelope
• Compliance standards: ROHS3 compliance and REACH unaffected status

The TMS320C6746EZWT3 qualifies as a direct substitute based on these parameters. While the substitute exhibits higher clock rate (375MHz) and expanded core voltage options (1.00V, 1.10V, 1.20V), these represent performance enhancements and do not compromise backward compatibility within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

The TMS320C6746EZWT3 is a qualified substitute for the obsolete TMS320C6746AZWT3. Selection should be based on the following factors:

Product Status: The TMS320C6746AZWT3 is obsolete, while the TMS320C6746EZWT3 maintains active product status with established supply chain availability. This distinction is critical for long-term system support and component procurement reliability.

Compliance Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications subject to environmental and hazardous substance restrictions.

Performance Characteristics: The substitute operates at 375MHz compared to the original 300MHz, providing enhanced processing capability without introducing incompatibility. The expanded core voltage range (1.00V, 1.10V, 1.20V) offers additional flexibility in power management while maintaining full backward compatibility with existing 1.20V designs.

Package and Interface Integrity: Identical package specifications (361-NFBGA 16x16) and complete interface parity ensure direct PCB-level compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the TMS320C6746EZWT3 be used as a direct replacement for the TMS320C6746AZWT3 in existing designs?

A: Yes. Both parts share identical package geometry (361-NFBGA 16x16), pinout, interface set, memory configuration, and operating temperature range. The substitute is electrically and mechanically compatible for direct substitution.

Q: What are the key differences between these two parts?

A: The primary differences are clock rate (300MHz vs. 375MHz) and core voltage options. The TMS320C6746EZWT3 offers higher performance and expanded voltage flexibility. The substitute maintains active product status, whereas the original is obsolete.

Q: Are there any voltage compatibility concerns when substituting?

A: No. Both parts support identical I/O voltages (1.8V, 3.3V). The original operates at 1.20V core voltage, which is included in the substitute's voltage range (1.00V, 1.10V, 1.20V). Existing 1.20V designs require no modification.

Q: Does the higher clock rate of the substitute affect thermal or power characteristics?

A: Clock rate differences may influence power consumption and thermal behavior. System-level thermal and power analysis should be performed to confirm suitability for the specific application environment.

Q: Are both parts subject to the same moisture sensitivity requirements?

A: Yes. Both parts carry MSL 3 (168 Hours) classification, requiring identical handling, storage, and reflow procedures.

Q: What is the significance of the product status difference?

A: The TMS320C6746AZWT3 is classified as obsolete, indicating discontinued manufacturing and limited availability. The TMS320C6746EZWT3 maintains active status with ongoing production and established supply chain support, making it the recommended choice for new designs and ongoing system support.