PI6C557-05QLE Equivalent & Substitute Parts

Part Overview

The PI6C557-05QLE is an active Ethernet and PCI Express (PCIe) clock generator IC manufactured by Diodes Incorporated. This 200MHz spread spectrum clock generator operates in a 20-TSSOP surface mount package and is designed for high-speed digital applications requiring precise clock distribution. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the original PI6C557-05QLE becomes unavailable due to supply constraints, end-of-life transitions, or inventory optimization requirements. Alternative clock generators from Renesas Electronics Corporation provide equivalent electrical and mechanical specifications while maintaining full functional compatibility.

Key Parameters

Parameter	Value
Frequency - Max	200MHz
Output Type	HCSL, LVDS
Number of Circuits	1
Ratio - Input:Output	1:4
Voltage - Supply	3.135V ~ 3.465V
Operating Temperature	-40°C ~ 85°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PI6C557-05QLE is determined by strict equivalence across the following critical parameters:

Maximum frequency: 200MHz
Output configuration: HCSL and LVDS outputs
Input/Output ratio: 1:4
Supply voltage range: 3.135V ~ 3.465V
Package type: 20-TSSOP with identical physical dimensions
Surface mount compatibility
RoHS3 compliance and MSL 1 rating

All substitute parts listed maintain these specifications. Variations in operating temperature range and packaging format (Tube vs. Cut Tape) do not affect functional substitution but may impact procurement and handling procedures.

Parameter Comparison

Parameter	PI6C557-05QLE (Diodes)	557GI-05ALF (Renesas)	5V41066PGGI (Renesas)	5V41066PGGI8 (Renesas)	557G-05ALF (Renesas)	557G-05ALFT (Renesas)	5V41066PGG (Renesas)
Frequency - Max	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz
Output Type	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS
Number of Circuits	1	1	1	1	1	1	1
Ratio - Input:Output	1:4	1:4	1:4	1:4	1:4	1:4	1:4
Supply Voltage	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V	3.135V ~ 3.465V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full ROHS3 compliance, ensuring regulatory and environmental standards alignment with the original PI6C557-05QLE.

For applications requiring the extended operating temperature range of -40°C to 85°C, select from: 557GI-05ALF, 5V41066PGGI, or 5V41066PGGI8. These parts are direct functional equivalents with identical electrical specifications.

For applications operating within the 0°C to 70°C temperature range, 557G-05ALF, 557G-05ALFT, and 5V41066PGG are suitable alternatives. The narrower temperature specification does not impact performance in standard industrial and commercial environments.

Packaging format selection depends on procurement workflow: Tube packaging (557GI-05ALF, 5V41066PGGI, 557G-05ALF, 5V41066PGG) supports standard component handling, while Cut Tape format (557G-05ALFT) accommodates automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can I use 557G-05ALF as a direct replacement for PI6C557-05QLE in a -40°C to 85°C application?

A: No. The 557G-05ALF operates only within 0°C to 70°C. For extended temperature range applications, use 557GI-05ALF, 5V41066PGGI, or 5V41066PGGI8 instead.

Q: Are all substitute parts pin-compatible with the original PI6C557-05QLE?

A: Yes. All substitute parts use the identical 20-TSSOP package with matching physical dimensions (0.173" × 4.40mm width) and surface mount configuration.

Q: What is the difference between 5V41066PGGI and 5V41066PGGI8?

A: Both parts are electrically and functionally identical. The primary difference is packaging format designation. Verify with your supplier for specific handling and storage requirements.

Q: Do packaging format differences (Tube vs. Cut Tape) affect electrical performance?

A: No. Packaging format affects only procurement, storage, and assembly handling procedures. Electrical specifications and performance remain identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification with MSL 1 (unlimited moisture sensitivity rating), matching the original part's environmental specifications.

Q: Which substitute part has the highest inventory availability?

A: 5V41066PGGI8 has 5456 pieces in stock, followed by 5V41066PGGI with 3668 pieces. Verify current availability with your component supplier.

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