TMS320DM357ZWT Equivalent & Substitute Parts

Part Overview

The TMS320DM357ZWT is a Digital Media System-on-Chip (DMSoC) from Texas Instruments' TMS320DM3x DaVinci™ series, designed for embedded multimedia processing applications. This device integrates a 270MHz processor with comprehensive multimedia interfaces including ASP, I2C, SPI, UART, and USB connectivity. The part is classified as Not For New Designs, indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing system maintenance, legacy product support, and continued production of existing designs that cannot be migrated to newer platforms.

Substiute Parts

TMS320DM357ZWT

Texas InstrumentsIn Stock: 5215TMS320DM357ZWT Datasheet

Current PartRFQ

TMS320DM365ZCE27

Texas InstrumentsIn Stock: 11006TMS320DM365ZCE27 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMS320DM357ZWT is determined by the following critical parameters:

Core Compatibility Criteria:

• Manufacturer: Texas Instruments (same manufacturer required for DaVinci™ ecosystem compatibility)
• Series: TMS320DM3x family (ensures architectural compatibility)
• Type: Digital Media System-on-Chip (DMSoC) (functional equivalence)
• Clock Rate: 270MHz (performance matching)
• Core Voltage: 1.20V (power supply compatibility)
• I/O Voltage: 1.8V, 3.3V (signal level compatibility)
• Operating Temperature: 0°C ~ 85°C (thermal envelope)
• Mounting Type: Surface Mount (assembly process compatibility)
• RoHS Status: ROHS3 Compliant (regulatory compliance)

Allowable Variations:

• Package / Case: Different BGA footprints within the DM3x series (361-LFBGA vs. 338-LFBGA) are acceptable if PCB layout can accommodate the alternative pinout
• Interface Set: Substitute parts may include additional interfaces beyond the minimum required set
• Memory Configuration: Increases in ROM and on-chip RAM are acceptable
• Product Status: Active status is preferred over Not For New Designs

Parameter Comparison

Engineering Selection Recommendations

The TMS320DM365ZCE27 qualifies as a direct substitute for the TMS320DM357ZWT based on the following engineering criteria:

Functional Equivalence: Both devices are TMS320DM3x series Digital Media System-on-Chips with identical 270MHz clock rates, core voltage (1.20V), and I/O voltage specifications (1.8V, 3.3V). The TMS320DM365ZCE27 maintains full backward compatibility with the original interface requirements while providing additional interface options (EBI/EMI, Ethernet, McBSP).

Regulatory Compliance: Both parts maintain ROHS3 compliance and identical REACH status, ensuring no regulatory barriers to substitution.

Memory Enhancement: The TMS320DM365ZCE27 provides increased on-chip resources (ROM increased from 8kB to 16kB; RAM increased from 40kB to 56kB), which presents no compatibility issues and may improve system performance.

Product Status Advantage: The TMS320DM365ZCE27 carries Active product status, ensuring continued availability and support from Texas Instruments, whereas the original part is classified as Not For New Designs.

Critical Consideration: The substitute part uses a 338-LFBGA package (13x13) compared to the original 361-LFBGA package (16x16). This difference requires PCB layout redesign and cannot be accommodated through simple component swapping.

Frequently Asked Questions (FAQ)

Q: Can the TMS320DM365ZCE27 be used as a direct pin-for-pin replacement?

A: No. While both devices are functionally equivalent Digital Media System-on-Chips from the same TMS320DM3x series, they use different BGA packages (361-LFBGA vs. 338-LFBGA). The pinout differs, requiring PCB redesign. However, the electrical and functional characteristics are fully compatible.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by: manufacturer (Texas Instruments), series (TMS320DM3x DaVinci™), device type (DMSoC), clock rate (270MHz), core voltage (1.20V), I/O voltage (1.8V, 3.3V), operating temperature range (0°C ~ 85°C), and compliance certifications (ROHS3). Variations in package type, interface count, and memory capacity are acceptable if the core parameters match.

Q: Does the TMS320DM365ZCE27 support all the interfaces of the original part?

A: Yes. The TMS320DM365ZCE27 includes all original interfaces (ASP, I2C, SPI, UART, USB) plus additional interfaces (EBI/EMI, Ethernet, McBSP). Existing designs using only the original interface set will function without modification.

Q: Why is the substitute part listed as Active while the original is Not For New Designs?

A: The TMS320DM357ZWT has reached end-of-life status. The TMS320DM365ZCE27 is the active equivalent within the TMS320DM3x family, ensuring long-term availability and manufacturer support for ongoing production and maintenance applications.

Q: Are there any voltage or thermal incompatibilities?

A: No. Both parts operate at identical core voltage (1.20V), I/O voltage (1.8V, 3.3V), and temperature range (0°C ~ 85°C). Power supply and thermal management designs require no modification.

Q: What inventory status should be considered for procurement?

A: The TMS320DM365ZCE27 has 10,925 pieces in stock compared to 5,160 pieces of the original part, providing greater availability for production planning.