ICS557GI-03 Equivalent & Substitute Parts

Part Overview

The ICS557GI-03 is an Ethernet and PCI Express (PCIe) Spread Spectrum Clock Generator and Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation. This 16-TSSOP surface mount device generates 200MHz clock signals with 1 output and supports both HCSL and LVDS output formats. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across frequency, voltage supply, output formats, and mechanical packaging specifications.

Substiute Parts

ICS557GI-03

Renesas Electronics CorporationIn Stock: 1049ICS557GI-03 Datasheet

Current PartRFQ

557GI-03LF

Renesas Electronics CorporationIn Stock: 3410557GI-03LF Datasheet

DirectRFQ

PI6C557-03BLE

Diodes IncorporatedIn Stock: 2132PI6C557-03BLE Datasheet

DirectRFQ

PI6C557-03BLEX

Diodes IncorporatedIn Stock: 35130PI6C557-03BLEX Datasheet

DirectRFQ

NB3N51032DTG

onsemiIn Stock: 1229NB3N51032DTG Datasheet

MFR RecommendedRFQ

NB3N51032DTR2G

onsemiIn Stock: 2631NB3N51032DTR2G Datasheet

MFR RecommendedRFQ

PI6C557-03BQE

Diodes IncorporatedIn Stock: 898PI6C557-03BQE Datasheet

MFR RecommendedRFQ

PI6C557-03BQEX

Diodes IncorporatedIn Stock: 3246PI6C557-03BQEX Datasheet

MFR RecommendedRFQ

PI6C557-03LEX

Diodes IncorporatedIn Stock: 22902PI6C557-03LEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ICS557GI-03 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Maximum frequency: 200MHz
• Supply voltage range: Must overlap or be contained within 2.97V ~ 3.63V
• Output formats: Must support HCSL and LVDS
• Number of outputs: 1
• Input type: Clock or Crystal capability
• Input:Output ratio: 1:2
• Differential input/output: No/Yes configuration
• Package type: 16-TSSOP or compatible 16-pin SSOP variants
• Operating temperature range: -40°C ~ 85°C minimum
• PLL functionality: Required

Substitute parts are grouped into two categories based on package configuration: 16-TSSOP direct equivalents and 16-QSOP variants with different mechanical dimensions. All substitute parts listed maintain active product status and RoHS3 compliance, addressing the obsolescence of the original part.

Parameter Comparison

Engineering Selection Recommendations

Direct 16-TSSOP Equivalents (Recommended Primary Substitutes):

557GI-03LF (Renesas) provides the closest electrical and mechanical match to the ICS557GI-03. This part maintains identical supply voltage range (2.97V ~ 3.63V), frequency specification (200MHz), output formats (HCSL, LVDS), and 16-TSSOP package dimensions. The part is active and RoHS3 compliant, addressing the obsolescence and compliance limitations of the original part. Packaging is available in Tube format with 3338 units in stock.

PI6C557-03BLEX (Diodes Incorporated) and PI6C557-03BLE (Diodes Incorporated) are 16-TSSOP variants with slightly narrower supply voltage range (3V ~ 3.6V) but maintain all critical electrical parameters. Both are active, RoHS3 compliant, and available in high quantities (35100 and 2100 units respectively). PI6C557-03BLEX is packaged in Tape & Reel format; PI6C557-03BLE is available in Tube.

PI6C557-03LEX (Diodes Incorporated) is a 16-TSSOP variant with 22800 units in stock, the highest inventory availability. This part supports CMOS and Crystal inputs with HSTL and LVDS outputs. Supply voltage range is 3V ~ 3.6V. Packaging is Cut Tape & Digi-Reel format.

NB3N51032DTR2G and NB3N51032DTG (onsemi) are manufacturer-recommended alternatives with 200MHz frequency and 1:2 input:output ratio. Supply voltage range is 3.135V ~ 3.465V. Both are active and RoHS3 compliant. NB3N51032DTR2G is Tape & Reel packaged with 2600 units in stock; NB3N51032DTG is Tube packaged with 1219 units.

16-QSOP Package Variants (Mechanical Substitution with Package Consideration):

PI6C557-03BQE and PI6C557-03BQEX (Diodes Incorporated) use 16-QSOP packaging (0.154", 3.90mm width) instead of 16-TSSOP (0.173", 4.40mm width). These parts maintain all electrical specifications but require PCB layout and footprint modification. PI6C557-03BQE is Tube packaged (800 units); PI6C557-03BQEX is Tape & Reel packaged (3151 units). Both are active and RoHS3 compliant.

Selection Criteria:

For direct board-level replacement without layout modification, select from 16-TSSOP variants: 557GI-03LF, PI6C557-03BLEX, PI6C557-03LEX, NB3N51032DTR2G, or NB3N51032DTG. All maintain the 16-TSSOP package footprint and support the required 200MHz frequency with HCSL and LVDS outputs.

For designs with supply voltage constraints below 3V, 557GI-03LF is the only substitute maintaining the original 2.97V minimum specification.

For maximum inventory availability, PI6C557-03LEX (22800 units) provides the highest stock level.

For RoHS3 compliance requirements in new designs, all listed substitutes are compliant, addressing the non-compliant status of the obsolete ICS557GI-03.

Frequently Asked Questions (FAQ)

Q: Can I use PI6C557-03BQE or PI6C557-03BQEX as direct replacements for ICS557GI-03?

A: These parts are electrically equivalent but use 16-QSOP packaging instead of 16-TSSOP. The package footprint is smaller (0.154" vs 0.173" width), requiring PCB layout and footprint modification. If your design uses 16-TSSOP footprints, select 16-TSSOP variants instead.

Q: What is the voltage supply difference between ICS557GI-03 and the substitute parts?

A: ICS557GI-03 operates at 2.97V ~ 3.63V. Most substitutes operate at 3V ~ 3.6V, which overlaps the original range. 557GI-03LF maintains the identical 2.97V ~ 3.63V range. NB3N51032DTR2G and NB3N51032DTG operate at 3.135V ~ 3.465V, a narrower range within the original specification. Verify your circuit's supply voltage against the selected substitute's range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant. The original ICS557GI-03 is RoHS non-compliant. If your application requires RoHS3 compliance, any substitute part meets this requirement.

Q: What is the difference between Tube, Tape & Reel, and Cut Tape packaging?

A: Tube packaging is used for manual assembly or small-volume production. Tape & Reel (TR) packaging is standard for automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel is a hybrid format combining cut tape with reel capability. Select packaging based on your assembly process and volume requirements.

Q: Can I use parts with different input types (HCSL vs Clock vs CMOS)?

A: Input type compatibility depends on your clock source. ICS557GI-03 accepts Clock or Crystal inputs. PI6C557 variants accept HCSL or Crystal inputs. NB3N51032 variants accept Clock or Crystal inputs. PI6C557-03LEX accepts CMOS or Crystal inputs. Ensure your clock source matches the substitute part's input specification.

Q: What is the significance of the 1:2 input:output ratio?

A: This ratio indicates the part doubles the input frequency. A 100MHz input produces a 200MHz output. All substitute parts maintain this 1:2 ratio, ensuring frequency multiplication behavior matches the original part.

Q: Why is inventory quantity important when selecting a substitute?

A: Higher inventory availability reduces lead time and supply chain risk. PI6C557-03LEX has the highest stock (22800 units), followed by PI6C557-03BLEX (35100 units in Tape & Reel). For long-term production, verify substitute part availability with your supplier.

Q: Are there differences in output format support between substitutes?

A: Most substitutes support HCSL and LVDS outputs, matching the original part. PI6C557-03LEX supports HSTL and LVDS instead of HCSL and LVDS. HSTL (High-Speed Transceiver Logic) is compatible with HCSL in many applications but verify your circuit's output requirements before selection.