TNETV1647GSTZWT Equivalent & Substitute Parts

Part Overview

The TNETV1647GSTZWT is a Digital Media System-on-Chip (DMSoC) from Texas Instruments' TMS320DM644x DaVinci™ series, designed for embedded multimedia processing applications. This device integrates a 513MHz DSP core with a 256MHz ARM® processor, supporting multiple interface protocols including ASP, EBI/EMI, Host Interface, I2C, SPI, UART, and USB.

The TNETV1647GSTZWT carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this part number and will no longer accept new orders after a specified date. This status necessitates identification of functionally equivalent alternatives for ongoing production requirements and new design considerations.

Substiute Parts

TNETV1647GSTZWT

Texas InstrumentsIn Stock: 771TNETV1647GSTZWT Datasheet

Current PartRFQ

TMS320DM6446BZWT

Texas InstrumentsIn Stock: 2165TMS320DM6446BZWT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TNETV1647GSTZWT is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 361-LFBGA package (361-NFBGA 16x16) to ensure mechanical and electrical pin compatibility on the PCB.

Interface Support: The substitute must support the same interface protocols: ASP, EBI/EMI, Host Interface, I2C, SPI, UART, and USB.

Memory Configuration: On-chip RAM must remain at 160kB and ROM at 8kB to maintain software compatibility.

Voltage Specifications: The substitute must support the same I/O voltage levels (1.8V, 3.3V) and core voltage range to ensure proper operation with existing power delivery networks.

Operating Temperature Range: The substitute must maintain the 0°C ~ 85°C operating temperature specification.

Series Alignment: The substitute must belong to the TMS320DM644x DaVinci™ series to guarantee architectural compatibility.

Clock rate variations (DSP and ARM® frequencies) are permitted within the same series, as these represent performance enhancements rather than functional incompatibilities, provided all other parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs: The TMS320DM6446BZWT serves as a direct substitute for the TNETV1647GSTZWT in existing production environments. Both devices share identical package geometry, memory configuration, interface protocols, and operating specifications. The TMS320DM6446BZWT provides higher clock rates (594MHz DSP, 297MHz ARM®) compared to the TNETV1647GSTZWT (513MHz DSP, 256MHz ARM®), resulting in improved performance without requiring design modifications.

Compliance Considerations: Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring compatibility with current manufacturing and storage requirements. The core voltage specification of the TMS320DM6446BZWT (1.20V only) is a subset of the TNETV1647GSTZWT's dual-voltage support (1.05V, 1.20V). Designs utilizing the 1.20V core voltage will experience no impact; designs requiring 1.05V core voltage operation must be evaluated for feasibility with the substitute part.

Product Status: Both the TNETV1647GSTZWT and TMS320DM6446BZWT carry discontinued product statuses (Last Time Buy and Not For New Designs, respectively). Neither part is recommended for new design initiatives. Long-term production strategies should evaluate alternative embedded multimedia processing solutions outside the TMS320DM644x series.

Frequently Asked Questions (FAQ)

Q: Can the TMS320DM6446BZWT replace the TNETV1647GSTZWT in production?

A: Yes. Both devices use the 361-LFBGA package with identical pinout, support the same interface protocols, and maintain equivalent memory configurations. The TMS320DM6446BZWT provides higher clock rates without requiring PCB or firmware modifications.

Q: What is the difference in core voltage between these parts?

A: The TNETV1647GSTZWT supports dual core voltages (1.05V and 1.20V), while the TMS320DM6446BZWT operates at 1.20V only. If your design uses 1.20V core voltage, both parts are fully compatible. If your design requires 1.05V operation, the substitute part cannot be used without design revision.

Q: Are there any package differences between these parts?

A: No. Both parts use the 361-LFBGA package (361-NFBGA 16x16) with identical mechanical and electrical specifications. PCB footprints and assembly processes remain unchanged.

Q: Why are both parts marked as discontinued?

A: The TNETV1647GSTZWT carries Last Time Buy status, indicating Texas Instruments has ceased accepting new orders. The TMS320DM6446BZWT is marked Not For New Designs, indicating it is available for existing production but not recommended for new product development. Both parts belong to a legacy product line.

Q: Will the higher clock rates of the TMS320DM6446BZWT affect my design?

A: No negative effects are expected. The higher DSP (594MHz vs. 513MHz) and ARM® (297MHz vs. 256MHz) clock rates represent performance improvements. Existing firmware and hardware designs will operate correctly with the substitute part. Power consumption may increase slightly due to higher clock rates.

Q: Are the I/O voltage specifications identical?

A: Yes. Both parts support 1.8V and 3.3V I/O voltages. No changes to I/O interface design are required when substituting these parts.

Q: What is the MSL rating and why does it matter?

A: Both parts have MSL 3 rating with a 168-hour floor life. This means the parts must be reflowed within 168 hours of moisture absorption. Storage and handling procedures remain identical for both parts.