PI6C10804WEX Equivalent & Substitute Parts

Part Overview

The PI6C10804WEX is a Clock Fanout Buffer (Distribution) IC manufactured by Diodes Incorporated, designed for 1:4 clock distribution at frequencies up to 180 MHz. This component operates with supply voltages between 1.4V and 2.7V and is housed in an 8-SOIC package. The part is currently listed as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting the same electrical and mechanical specifications.

Substiute Parts

PI6C10804WEX

Diodes IncorporatedIn Stock: 4357PI6C10804WEX Datasheet

Current PartRFQ

551SDCGI

Renesas Electronics CorporationIn Stock: 9405551SDCGI Datasheet

MFR RecommendedRFQ

551SDCGI8

Renesas Electronics CorporationIn Stock: 1192551SDCGI8 Datasheet

MFR RecommendedRFQ

621SDCGI

Renesas Electronics CorporationIn Stock: 1204621SDCGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PI6C10804WEX are qualified based on the following critical parameters:

Functional Requirements:

• Input:Output Ratio: 1:4 (mandatory match)
• Package Type: 8-SOIC (0.154", 3.90mm Width) (mandatory match)
• Mounting Type: Surface Mount (mandatory match)

Electrical Compatibility:

• Frequency capability must equal or exceed 180 MHz
• Supply voltage range must encompass or exceed the original 1.4V ~ 2.7V range
• Input/Output signal types must be compatible with LVCMOS/LVTTL standards

Compliance & Status:

• RoHS3 compliance required
• Active product status preferred for long-term availability

The three qualified substitutes (551SDCGI, 551SDCGI8, and 621SDCGI) all meet these core requirements while offering enhanced frequency performance (200 MHz) and extended operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance, providing long-term availability advantages over the obsolete PI6C10804WEX. Selection between substitutes depends on packaging and supply requirements:

551SDCGI (Tube Packaging): Suitable for applications requiring standard tube packaging with 9315 units in stock. Offers the highest inventory availability among substitutes.

551SDCGI8 (Tape & Reel Packaging): Appropriate for high-volume automated assembly processes. Tape & Reel format supports pick-and-place equipment integration with 1181 units available.

621SDCGI (Tube Packaging): Functions as a Clock Buffer with LVCMOS output specification. Maintains 1:4 distribution ratio and 200 MHz frequency capability with 1160 units in stock.

All substitutes exceed the original part's frequency specification (200 MHz vs. 180 MHz) and extended operating temperature range (-40°C ~ 105°C vs. -40°C ~ 85°C), providing design margin for thermal and performance considerations.

Frequently Asked Questions (FAQ)

Q: Can the 551SDCGI, 551SDCGI8, and 621SDCGI be used interchangeably with the PI6C10804WEX?

A: Yes, all three parts share the same 1:4 input:output ratio, 8-SOIC package footprint, and surface mount configuration. The primary differences are packaging format (Tube vs. Tape & Reel) and output signal specification (621SDCGI specifies LVCMOS output). Electrical performance is compatible for applications operating within the original supply voltage and frequency specifications.

Q: What is the difference between 551SDCGI and 551SDCGI8?

A: Both parts are functionally identical Renesas Electronics clock fanout buffers with 200 MHz maximum frequency. The difference is packaging: 551SDCGI is supplied in Tube format, while 551SDCGI8 is supplied in Tape & Reel format. Selection depends on assembly process requirements and volume.

Q: Why do the substitute parts have higher maximum frequency (200 MHz) than the original (180 MHz)?

A: The substitute parts are designed with enhanced performance specifications. The 200 MHz capability provides additional design margin and is fully backward compatible with applications designed for 180 MHz operation.

Q: Are there supply voltage compatibility concerns when substituting?

A: The original PI6C10804WEX operates at 1.4V ~ 2.7V. Substitute parts operate at 1.71V ~ 3.465V. Applications using supply voltages between 1.71V and 2.7V are fully compatible. Applications requiring operation below 1.71V require design review.

Q: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (0.154", 3.90mm Width) package is a standard surface mount integrated circuit package. All substitute parts use this identical package, ensuring PCB footprint and land pattern compatibility without layout modifications.