M4A3-96/48-10VC Equivalent & Substitute Parts

Part Overview

The M4A3-96/48-10VC is a Complex Programmable Logic Device (CPLD) from Lattice Semiconductor Corporation's ispMACH® 4A series. This device features 96 macrocells, 48 I/O pins, and a maximum propagation delay of 10 nanoseconds, housed in a 100-pin LQFP package. The product is currently obsolete, making identification of functionally compatible alternatives essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

M4A3-96/48-10VC

Lattice Semiconductor CorporationIn Stock: 915M4A3-96/48-10VC Datasheet

Current PartRFQ

ATF1504ASV-15AU100

Microchip TechnologyIn Stock: 1360ATF1504ASV-15AU100 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M4A3-96/48-10VC is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 100-TQFP (14x14) package to ensure mechanical and electrical compatibility with existing PCB layouts.

Programmability: The substitute must support In System Programmable (ISP) functionality to maintain design flexibility and field reprogrammability.

Voltage Supply: The substitute must operate within the 3V to 3.6V internal supply range to ensure compatibility with existing power distribution networks.

Logic Capacity and I/O Count: While the substitute may differ in macrocell count and I/O pin count, these parameters must be sufficient to accommodate the original design's logic requirements. The ATF1504ASV-15AU100 provides 64 macrocells and 64 I/O pins, offering comparable or enhanced I/O capability.

Propagation Delay: The substitute's maximum propagation delay must not exceed the timing requirements of the original design. The ATF1504ASV-15AU100 specifies a maximum delay of 15 ns, which is acceptable for applications where the original 10 ns specification is not a hard constraint.

Operating Temperature Range: The substitute must support the required operating temperature range. The ATF1504ASV-15AU100 extends the range to -40°C ~ 85°C, providing broader environmental coverage.

Parameter Comparison

Engineering Selection Recommendations

The ATF1504ASV-15AU100 is the designated substitute for the obsolete M4A3-96/48-10VC. Selection of this alternative is supported by the following factors:

Product Status: The M4A3-96/48-10VC is obsolete, while the ATF1504ASV-15AU100 maintains active production status, ensuring long-term availability and supply chain continuity.

Regulatory Compliance: The ATF1504ASV-15AU100 is ROHS3 compliant, meeting current environmental and regulatory standards. The original part is RoHS non-compliant, making the substitute preferable for new designs and systems subject to RoHS requirements.

Package Compatibility: Both devices use the 100-TQFP (14x14) package, enabling direct PCB layout compatibility without redesign.

Electrical Compatibility: Both devices operate within the 3V to 3.6V supply range and support In System Programmable functionality, maintaining design flexibility.

Trade-offs: The ATF1504ASV-15AU100 features a 15 ns maximum propagation delay compared to the original 10 ns specification. Applications with timing-critical requirements must evaluate whether this 5 ns increase is acceptable. The substitute provides 64 macrocells versus the original 96, requiring design optimization for logic-dense applications. However, the substitute offers 64 I/O pins compared to the original 48, providing additional I/O capacity.

Frequently Asked Questions (FAQ)

Q: Can the ATF1504ASV-15AU100 be used as a direct replacement for the M4A3-96/48-10VC?

A: The ATF1504ASV-15AU100 is mechanically and electrically compatible in terms of package, supply voltage, and programmability. However, design validation is required to confirm that the 15 ns propagation delay meets timing requirements and that the 64 macrocells are sufficient for the original logic design.

Q: What is the primary reason for substitution?

A: The M4A3-96/48-10VC is obsolete. The ATF1504ASV-15AU100 is an active product from a major manufacturer, ensuring availability and ongoing support.

Q: Are there differences in the number of I/O pins?

A: Yes. The M4A3-96/48-10VC provides 48 I/O pins, while the ATF1504ASV-15AU100 provides 64 I/O pins. Both devices use the same 100-TQFP package. The additional I/O capacity in the substitute does not create compatibility issues.

Q: How does the propagation delay difference affect system performance?

A: The substitute specifies a maximum propagation delay of 15 ns compared to the original 10 ns. For applications where timing margins are critical, this 5 ns increase must be evaluated against system clock frequencies and setup/hold time requirements.

Q: Is the ATF1504ASV-15AU100 suitable for new designs?

A: Yes. The ATF1504ASV-15AU100 is an active product with ROHS3 compliance, making it suitable for new designs and systems subject to current environmental regulations.

Q: What is the moisture sensitivity level for both devices?

A: Both devices specify MSL 3 (168 Hours), indicating identical moisture handling and storage requirements.