PI6C557-03ALE Equivalent & Substitute Parts

Part Overview

The PI6C557-03ALE is an Ethernet and PCI Express (PCIe) clock generator IC manufactured by Diodes Incorporated. This 16-TSSOP surface mount device generates 200MHz clock signals with 1:2 input-to-output ratio, supporting HCSL and LVDS output formats. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct board-level replacement without design modifications.

Key Parameters

Parameter	Value
Frequency - Max	200MHz
Voltage - Supply	3V ~ 3.6V
Output Type	HCSL, LVDS
Input Type	HCSL, Crystal
Number of Circuits	1
Ratio - Input:Output	1:2
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the PI6C557-03ALE is determined by strict alignment of the following critical parameters:

Frequency - Max: Must equal 200MHz
Output Type: Must support HCSL and LVDS
Input Type: Must support HCSL or Crystal input
Package / Case: Must be 16-TSSOP (0.173", 4.40mm Width)
Mounting Type: Must be Surface Mount
Number of Circuits: Must equal 1
Ratio - Input:Output: Must be 1:2
RoHS Status: Must be ROHS3 Compliant
MSL Rating: Must be 1 (Unlimited)

Substitute parts are grouped into two categories: direct manufacturer equivalents from Diodes Incorporated and manufacturer-recommended alternatives from Renesas Electronics Corporation. All listed substitutes meet the above criteria and are electrically and mechanically interchangeable at the board level.

Parameter Comparison

Part Number	Manufacturer	Frequency - Max	Voltage - Supply	Output Type	Input Type	Package	Operating Temperature	Product Status
PI6C557-03ALE	Diodes Incorporated	200MHz	3V ~ 3.6V	HCSL, LVDS	HCSL, Crystal	16-TSSOP	-40°C ~ 85°C	Obsolete
PI6C557-03ALEX	Diodes Incorporated	200MHz	3V ~ 3.6V	HCSL, LVDS	HCSL, Crystal	16-TSSOP	-40°C ~ 85°C	Active
557G-03LF	Renesas Electronics Corporation	200MHz	2.97V ~ 3.63V	HCSL, LVDS	Clock, Crystal	16-TSSOP	0°C ~ 70°C	Active
557G-03LFT	Renesas Electronics Corporation	200MHz	2.97V ~ 3.63V	HCSL, LVDS	Clock, Crystal	16-TSSOP	0°C ~ 70°C	Active
557GI-03LF	Renesas Electronics Corporation	200MHz	2.97V ~ 3.63V	HCSL, LVDS	Clock, Crystal	16-TSSOP	-40°C ~ 85°C	Active
557GI-03LFT	Renesas Electronics Corporation	200MHz	2.97V ~ 3.63V	HCSL, LVDS	Clock, Crystal	16-TSSOP	-40°C ~ 85°C	Active
5V41065PGG	Renesas Electronics Corporation	200MHz	3.135V ~ 3.465V	HCSL, LVDS	Clock, Crystal	16-TSSOP	0°C ~ 70°C	Active
5V41065PGG8	Renesas Electronics Corporation	200MHz	3.135V ~ 3.465V	HCSL, LVDS	Clock, Crystal	16-TSSOP	0°C ~ 70°C	Active
5V41065PGGI	Renesas Electronics Corporation	200MHz	3.135V ~ 3.465V	HCSL, LVDS	Clock, Crystal	16-TSSOP	-40°C ~ 85°C	Active
5V41065PGGI8	Renesas Electronics Corporation	200MHz	3.135V ~ 3.465V	HCSL, LVDS	Clock, Crystal	16-TSSOP	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Primary Recommendation: PI6C557-03ALEX

The PI6C557-03ALEX is the direct equivalent from Diodes Incorporated. It maintains identical electrical specifications and operating temperature range (-40°C ~ 85°C) as the obsolete PI6C557-03ALE. This part is in active production status with 35,400 units in stock, ensuring long-term availability. Both parts are ROHS3 compliant and carry MSL 1 rating. Selection of this part eliminates any potential compatibility concerns and maintains design continuity.

Secondary Recommendations: 557GI-03LF and 557GI-03LFT

The Renesas 557GI series parts provide active alternatives with matching -40°C ~ 85°C operating temperature range. These parts support the required 200MHz frequency, HCSL/LVDS output, and 16-TSSOP package. Supply availability is strong (3,338 and 19,241 units respectively). The voltage supply range (2.97V ~ 3.63V) encompasses the PI6C557-03ALE specification (3V ~ 3.6V), ensuring compatibility with existing power distribution designs.

Alternative Options: 5V41065PGGI and 5V41065PGGI8

The Renesas 5V41065 series with industrial temperature rating (-40°C ~ 85°C) provides functional equivalence. These parts maintain 200MHz frequency and 16-TSSOP packaging. The narrower voltage supply range (3.135V ~ 3.465V) requires verification that system power supplies operate within this window. Stock availability is adequate (2,300 and 18,333 units).

Not Recommended for Extended Temperature Applications: 557G-03LF, 557G-03LFT, 5V41065PGG, 5V41065PGG8

These parts operate only to 0°C ~ 70°C and are unsuitable for designs requiring the full -40°C ~ 85°C temperature range of the original PI6C557-03ALE.

Frequently Asked Questions (FAQ)

Q: Can I use 557G-03LF as a substitute for PI6C557-03ALE in a military or automotive application?

A: No. The 557G-03LF operates only to 70°C maximum, while the PI6C557-03ALE supports -40°C ~ 85°C. Military and automotive specifications typically require the full extended temperature range. Use 557GI-03LF or 557GI-03LFT instead, which maintain the -40°C ~ 85°C rating.

Q: Are there any differences in the 16-TSSOP package between manufacturers?

A: No. All substitute parts use the identical 16-TSSOP package (0.173", 4.40mm Width). Board layout and footprints are directly compatible without modification.

Q: What is the difference between 557G-03LF and 557G-03LFT?

A: Both parts are electrically identical. The suffix designates packaging format: 557G-03LF is supplied in Tube packaging, while 557G-03LFT packaging is not specified. Electrical performance and pin configuration are identical.

Q: Can I substitute 5V41065PGG for PI6C557-03ALE?

A: Only if your application operates within 0°C ~ 70°C. The 5V41065PGG does not support the -40°C lower temperature limit. For extended temperature requirements, use 5V41065PGGI or 5V41065PGGI8 instead.

Q: What is the voltage supply tolerance difference between PI6C557-03ALE and Renesas 557G series?

A: PI6C557-03ALE specifies 3V ~ 3.6V. Renesas 557G series specifies 2.97V ~ 3.63V. The Renesas range is slightly wider and fully encompasses the Diodes specification, ensuring compatibility with existing power supplies designed for the original part.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original PI6C557-03ALE specifications.

Q: Which substitute has the highest stock availability?

A: PI6C557-03ALEX from Diodes Incorporated has 35,400 units in stock, the highest among all alternatives. This ensures immediate availability and long-term supply continuity.

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