TSI384-133IL Equivalent & Substitute Parts

Part Overview

The TSI384-133IL is a PCI-to-PCI Bridge Interface IC manufactured by Renesas Electronics Corporation in a 256-PBGA (17x17) package. This component functions as a specialized interface for PCI bus bridging applications. The product is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design considerations. Substitute parts must maintain core interface functionality while accommodating modern component availability and compliance requirements.

Substiute Parts

TSI384-133IL

Renesas Electronics CorporationIn Stock: 1468TSI384-133IL Datasheet

Current PartRFQ

PI3PCIE3212XUAEX

Diodes IncorporatedIn Stock: 19463PI3PCIE3212XUAEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the TSI384-133IL is based on the following allowed parameters:

• Interface Protocol: Both PCI and PCI Express (PCIe) are bus bridging interface standards. The TSI384 operates on legacy PCI, while the PI3PCIE3212 operates on modern PCIe architecture.
• Package Type: The main part uses 256-PBGA (17x17), while the substitute uses 18-X2QFN (2x2). These are fundamentally different package footprints and pin counts, requiring PCB redesign.
• Supply Voltage: The TSI384 requires 1.2V, while the PI3PCIE3212 requires 3V–3.6V, necessitating different power delivery circuits.
• Product Status: The TSI384 is obsolete; the PI3PCIE3212 is active and currently manufactured.
• Compliance: The TSI384 is RoHS non-compliant; the PI3PCIE3212 is ROHS3 compliant, meeting modern regulatory requirements.

The PI3PCIE3212XUAEX represents a functional alternative for new designs requiring PCI Express bridging capability, though it operates on a different protocol generation and requires significant hardware integration changes.

Parameter Comparison

Engineering Selection Recommendations

For Legacy System Maintenance: The TSI384-133IL remains the specified component for existing designs. Current inventory of 1,393 pieces is available for production support of established systems.

For New Designs: The PI3PCIE3212XUAEX is the active alternative, offering ROHS3 compliance and unlimited moisture sensitivity rating. However, this substitution requires complete hardware redesign due to:

• Protocol change from PCI to PCI Express
• Package change from 256-PBGA to 18-X2QFN
• Supply voltage change from 1.2V to 3V–3.6V

Compliance Consideration: Systems requiring RoHS3 compliance must transition to the PI3PCIE3212XUAEX or identify alternative PCI-to-PCI bridge solutions that maintain legacy PCI protocol support.

Frequently Asked Questions (FAQ)

Q: Can the PI3PCIE3212XUAEX directly replace the TSI384-133IL on existing PCBs?

A: No. The parts operate on different bus protocols (PCI versus PCI Express), use incompatible packages (256-PBGA versus 18-X2QFN), and require different supply voltages (1.2V versus 3V–3.6V). PCB redesign and firmware modifications are required.

Q: What is the primary difference between these interface types?

A: The TSI384 bridges PCI buses using the legacy PCI protocol. The PI3PCIE3212 bridges PCI Express buses using the modern PCIe protocol. These are distinct bus architectures with different electrical and logical specifications.

Q: Is the TSI384-133IL still available for purchase?

A: The TSI384-133IL is classified as obsolete but has current inventory of 1,393 pieces available. Availability may diminish over time as existing stock is consumed.

Q: What are the package implications for substitution?

A: The TSI384 uses a 256-pin BGA package (17x17mm), while the PI3PCIE3212 uses an 18-pin QFN package (2x2mm). These require entirely different PCB layouts, trace routing, and via placement strategies.

Q: Does the PI3PCIE3212XUAEX meet modern compliance standards?

A: Yes. The PI3PCIE3212XUAEX is ROHS3 compliant and has an MSL rating of 1 (unlimited moisture exposure), compared to the TSI384's RoHS non-compliance and MSL-3 rating.