ICS557G-06T Equivalent & Substitute Parts

Part Overview

The ICS557G-06T is a PCI Express (PCIe) Fanout Buffer (Distribution) and Multiplexer IC manufactured by Renesas Electronics Corporation. This clock/timing component functions as a 1:4 HCSL buffer with a maximum frequency of 200MHz, designed for PCIe applications requiring signal distribution and buffering. The ICS557G-06T is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

ICS557G-06T

Renesas Electronics CorporationIn Stock: 1101ICS557G-06T Datasheet

Current PartRFQ

557G-06LFT

Renesas Electronics CorporationIn Stock: 3867557G-06LFT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICS557G-06T is determined by strict equivalence across the following critical parameters:

• Functional Equivalence: Input/Output signal types (HCSL, LVDS), differential configuration (Yes/Yes), and circuit count (1) must match exactly
• Electrical Specifications: Maximum frequency (200MHz), supply voltage range (3.135V ~ 3.465V), and operating temperature range (0°C ~ 70°C) must be identical
• Mechanical Compatibility: Package type (20-TSSOP) and mounting method (Surface Mount) must be identical to ensure PCB layout compatibility
• Base Product Alignment: The substitute must share the same base product number (557G) to confirm core design equivalence

The ICS557G-06T has one direct equivalent: 557G-06LFT. This substitute maintains all electrical and mechanical parameters while differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The 557G-06LFT is the direct functional equivalent for the obsolete ICS557G-06T. All electrical and mechanical parameters are identical, ensuring drop-in compatibility at the circuit level.

Product Status Consideration: The ICS557G-06T is obsolete, while the 557G-06LFT is active. For new designs or ongoing production requiring this clock buffer function, the 557G-06LFT is the appropriate selection to ensure long-term supply availability and manufacturing support from Renesas Electronics Corporation.

Compliance Consideration: The ICS557G-06T carries RoHS non-compliant status, while the 557G-06LFT is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the 557G-06LFT satisfies current environmental compliance standards. Both parts maintain identical REACH Unaffected and EAR99 ECCN classifications.

Packaging Format: The primary difference between these parts is packaging. The ICS557G-06T is supplied in bulk form, while the 557G-06LFT is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and provides improved handling and traceability.

Frequently Asked Questions (FAQ)

Q: Can the 557G-06LFT replace the ICS557G-06T in existing designs?

A: Yes. The 557G-06LFT is electrically and mechanically equivalent to the ICS557G-06T. All functional parameters—frequency, voltage supply, signal types, package, and pin configuration—are identical. The substitute requires no circuit modifications.

Q: What is the difference between ICS557G-06T and 557G-06LFT?

A: The parts are functionally identical. The differences are: (1) Product Status—ICS557G-06T is obsolete while 557G-06LFT is active; (2) RoHS Compliance—ICS557G-06T is non-compliant while 557G-06LFT is ROHS3 compliant; (3) Packaging—ICS557G-06T is supplied in bulk while 557G-06LFT is supplied in Tape & Reel format.

Q: Why is the ICS557G-06T obsolete?

A: The ICS557G-06T has been discontinued by Renesas Electronics Corporation. The 557G-06LFT is the active equivalent and is the recommended part for procurement.

Q: Are there any pin or footprint differences between these parts?

A: No. Both parts use the identical 20-TSSOP package with 0.173" width and 4.40mm dimensions. PCB footprints are identical.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental standards, not electrical performance. Both parts meet identical electrical specifications for frequency, voltage, and signal integrity.

Q: Can I use the 557G-06LFT in applications originally designed for the ICS557G-06T?

A: Yes. The 557G-06LFT is a direct substitute for all PCIe fanout buffer applications requiring 1:4 HCSL buffering at 200MHz with 3.135V ~ 3.465V supply voltage and 0°C ~ 70°C operating temperature.