PI6C557-06LIEX Equivalent & Substitute Parts

Part Overview

The PI6C557-06LIEX is a PCI Express (PCIe) clock generator IC manufactured by Diodes Incorporated, designed to generate 200MHz clock signals with 1 output in a 20-TSSOP package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates within a supply voltage range of 3.135V to 3.465V and is suitable for PCIe applications requiring HCSL input and output signaling.

Substiute Parts

PI6C557-06LIEX

Diodes IncorporatedIn Stock: 3013PI6C557-06LIEX Datasheet

Current PartRFQ

9DML0441AKILF

Renesas Electronics CorporationIn Stock: 154879DML0441AKILF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PI6C557-06LIEX is determined by strict equivalence across the following critical parameters:

• Functional Purpose: PCI Express (PCIe) clock generation
• Frequency Specification: 200MHz maximum operating frequency
• Signal Interface: HCSL differential input and output
• Multiplexing Ratio: 2:4 input-to-output configuration
• Supply Voltage Range: 3.135V ~ 3.465V compatibility
• Operating Temperature Range: -40°C ~ 85°C
• Number of Circuits: Single circuit implementation
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The substitute part 9DML0441AKILF from Renesas Electronics Corporation meets all these critical parameters. The primary difference is the package format: the substitute uses 24-VFQFN (4x4) instead of the original 20-TSSOP, which requires PCB layout redesign but maintains full functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 9DML0441AKILF is a direct functional substitute for the PI6C557-06LIEX based on electrical parameter equivalence. The original part is classified as obsolete, while the substitute maintains active product status from Renesas Electronics Corporation. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The primary consideration for implementation is the package transition from 20-TSSOP to 24-VFQFN. This change requires PCB layout modification to accommodate the different pin configuration and footprint dimensions. The substitute's exposed pad design in the QFN package may provide improved thermal performance compared to the original TSSOP package.

Both parts are rated for identical supply voltage ranges (3.135V ~ 3.465V) and operating temperature ranges (-40°C ~ 85°C), ensuring direct electrical compatibility in the system power delivery and thermal management design.

Frequently Asked Questions (FAQ)

Q: Can the 9DML0441AKILF directly replace the PI6C557-06LIEX without PCB modifications?

A: No. While the parts are electrically equivalent, the package formats differ: the original uses 20-TSSOP and the substitute uses 24-VFQFN (4x4). PCB layout redesign is required to accommodate the different footprint and pin arrangement.

Q: Are the signal integrity characteristics identical between these parts?

A: Both parts implement HCSL differential input and output with identical 2:4 multiplexing ratios and 200MHz frequency specifications. Signal integrity performance is determined by these matched electrical parameters.

Q: What is the significance of the exposed pad in the 24-VFQFN package?

A: The exposed pad provides a thermal connection point that can improve heat dissipation compared to the original TSSOP package. This is a functional advantage but requires proper PCB design to utilize effectively.

Q: Are there any supply voltage or temperature range differences?

A: No. Both parts operate within identical supply voltage ranges (3.135V ~ 3.465V) and temperature ranges (-40°C ~ 85°C). System power delivery and thermal management designs require no modification.

Q: Why is the original part classified as obsolete?

A: The PI6C557-06LIEX is marked as obsolete by the manufacturer. The 9DML0441AKILF maintains active product status, ensuring long-term availability and manufacturing support for new designs and ongoing production requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PI6C557-06LIEX and 9DML0441AKILF are ROHS3 compliant and REACH unaffected, maintaining identical regulatory compliance for industrial and commercial applications.