PI6C557-03LE Equivalent & Substitute Parts

Part Overview

The PI6C557-03LE is an Ethernet and PCI Express (PCIe) Clock/Frequency Generator IC manufactured by Diodes Incorporated. This 16-TSSOP surface mount device generates 200MHz clock signals with 1 output and operates on a 3V to 3.6V supply. The part is currently obsolete, making substitute components necessary for new designs or production continuity. Equivalent and substitute parts maintain the same electrical performance and mechanical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI6C557-03LE
Manufacturer	Diodes Incorporated
Category	Clock/Timing
Description	IC CLOCK GENERATOR 16TSSOP
Main Purpose	Ethernet, PCI Express (PCIe)
Frequency - Max	200MHz
Number of Outputs	1
Input Type	CMOS, Crystal
Output Type	HCSL, LVDS
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PI6C557-03LE is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Package / Case: 16-TSSOP (0.173", 4.40mm Width)
Frequency - Max: 200MHz
Number of Outputs: 1
Main Purpose: Ethernet, PCI Express (PCIe)
Input Type: CMOS, Crystal or Clock, Crystal
Output Type: HCSL, LVDS or HSTL, LVDS
Voltage - Supply: 3V ~ 3.6V or 2.97V ~ 3.63V (compatible range)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these parameters within acceptable engineering tolerances. Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and design requirements.

Parameter Comparison

Parameter	PI6C557-03LE (Diodes)	PI6C557-03LEX (Diodes)	557G-03LF (Renesas)	557G-03LFT (Renesas)	557GI-03LF (Renesas)	557GI-03LFT (Renesas)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Renesas Electronics	Renesas Electronics	Renesas Electronics	Renesas Electronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Frequency - Max	200MHz	200MHz	200MHz	200MHz	200MHz	200MHz
Number of Outputs	1	1	1	1	1	1
Input Type	CMOS, Crystal	CMOS, Crystal	Clock, Crystal	Clock, Crystal	Clock, Crystal	Clock, Crystal
Output Type	HCSL, LVDS	HSTL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS	HCSL, LVDS
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V	2.97V ~ 3.63V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-TSSOP	16-TSSOP	16-TSSOP	16-TSSOP	16-TSSOP	16-TSSOP
Mounting Type	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
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	5852 Pcs	22800 Pcs	1487 Pcs	17054 Pcs	3338 Pcs	19241 Pcs

Engineering Selection Recommendations

Primary Substitute (Diodes Manufacturer Line): PI6C557-03LEX is the direct equivalent from Diodes Incorporated with active product status. This part maintains identical electrical specifications and packaging to the obsolete PI6C557-03LE, with significantly higher inventory availability (22800 units). Selection of PI6C557-03LEX is recommended for designs requiring continuity within the Diodes product family.

Alternative Substitutes (Renesas Manufacturer Line): The Renesas 557G and 557GI series parts (557G-03LF, 557G-03LFT, 557GI-03LF, 557GI-03LFT) are functionally equivalent alternatives. All maintain 200MHz operation, 16-TSSOP packaging, and ROHS3 compliance. Key differences include:

557G variants operate at 0°C ~ 70°C temperature range, suitable for commercial applications
557GI variants operate at -40°C ~ 85°C temperature range, suitable for industrial and extended temperature applications
Supply voltage range is 2.97V ~ 3.63V, which encompasses the original 3V ~ 3.6V specification
All Renesas variants are in active product status with substantial inventory availability

Selection between 557G and 557GI variants depends on operating temperature requirements. Selection of Renesas parts is appropriate when Diodes inventory is constrained or when design flexibility across manufacturers is required.

Frequently Asked Questions (FAQ)

Q: Can PI6C557-03LEX directly replace PI6C557-03LE without circuit modifications?

A: Yes. PI6C557-03LEX maintains identical electrical specifications, output types (HCSL, LVDS), frequency (200MHz), supply voltage range (3V ~ 3.6V), and 16-TSSOP packaging. No circuit modifications are required.

Q: What is the primary difference between Diodes PI6C557-03LEX and Renesas 557G/557GI substitutes?

A: The primary differences are manufacturer and operating temperature range. Renesas 557G operates 0°C ~ 70°C (commercial), while 557GI operates -40°C ~ 85°C (industrial). Both maintain the same 200MHz frequency, 16-TSSOP package, and ROHS3 compliance as the original part.

Q: Are Renesas 557G-03LF and 557GI-03LF pin-compatible with PI6C557-03LE?

A: Yes. All substitute parts use identical 16-TSSOP packaging (0.173", 4.40mm width) with the same pin configuration. Direct PCB substitution is possible without layout modifications.

Q: Which substitute should be selected for industrial temperature applications?

A: For applications requiring -40°C ~ 85°C operation, select either PI6C557-03LEX (Diodes) or 557GI-03LF/557GI-03LFT (Renesas). The 557G variants are limited to 0°C ~ 70°C and are not suitable for extended temperature industrial applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes (PI6C557-03LEX, 557G-03LF, 557G-03LFT, 557GI-03LF, 557GI-03LFT) are ROHS3 compliant with MSL rating of 1 (Unlimited).

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

A: 557G-03LF is supplied in Tube packaging, while 557G-03LFT packaging is not specified. Both maintain identical electrical specifications and 16-TSSOP case dimensions. Selection depends on procurement and assembly requirements.

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