PI6C48543LEX Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The PI6C48543LEX is a Clock Fanout Buffer (Distribution) Multiplexer IC manufactured by Diodes Incorporated, designed for 2:4 clock distribution at frequencies up to 800 MHz. This component features differential input and output capabilities with support for multiple input signal standards (CML, HCSL, LVDS, LVHSTL, LVPECL, SSTL) and LVDS output format. The part is packaged in a 20-TSSOP surface mount package with a 0.173" width (4.40mm).

The PI6C48543LEX is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

PI6C48543LEX

Diodes IncorporatedIn Stock: 1905PI6C48543LEX Datasheet

Current PartRFQ

8543BGLF

Renesas Electronics CorporationIn Stock: 12498543BGLF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PI6C48543LEX is determined by strict alignment of the following critical parameters:

• Functional Type: Fanout Buffer (Distribution), Multiplexer with 2:4 input-to-output ratio
• Differential Capability: Both differential input and differential output support
• Input Signal Compatibility: Support for CML, HCSL, LVDS, LVHSTL, LVPECL, and SSTL input standards
• Output Format: LVDS output
• Frequency Rating: 800 MHz maximum operating frequency
• Supply Voltage Range: 3.135V ~ 3.465V
• Package Format: 20-TSSOP surface mount package with identical physical dimensions (0.173", 4.40mm Width)
• Compliance: ROHS3 compliance and MSL Level 1 rating

The substitute part 8543BGLF from Renesas Electronics Corporation meets all these core electrical and mechanical parameters, enabling direct functional replacement in applications requiring clock distribution at 800 MHz with differential LVDS output.

Parameter Comparison

Engineering Selection Recommendations

The 8543BGLF from Renesas Electronics Corporation is a direct functional equivalent to the PI6C48543LEX for clock distribution applications requiring 2:4 fanout buffering at 800 MHz with differential LVDS output.

Both parts are ROHS3 compliant and carry MSL Level 1 moisture sensitivity ratings, meeting environmental and regulatory requirements for industrial and commercial applications. Both components are classified as obsolete, indicating limited ongoing availability through standard distribution channels.

The primary operational difference is the operating temperature range: the PI6C48543LEX supports -40°C ~ 85°C, while the 8543BGLF supports 0°C ~ 70°C. Selection between these parts should be based on the specific temperature requirements of the target application. Applications requiring extended low-temperature operation below 0°C must use the PI6C48543LEX. Applications operating within the 0°C ~ 70°C range can use either part.

Frequently Asked Questions (FAQ)

Q: Can the 8543BGLF replace the PI6C48543LEX in all applications?

A: The 8543BGLF is electrically and mechanically equivalent for applications operating within the 0°C ~ 70°C temperature range. Applications requiring operation below 0°C or above 70°C must use the PI6C48543LEX, which supports -40°C ~ 85°C.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the PI6C48543LEX and 8543BGLF use the 20-TSSOP package with identical physical dimensions of 0.173" width (4.40mm). PCB layout and footprints are interchangeable.

Q: What input signal standards are supported by both parts?

A: Both parts support CML, HCSL, LVDS, LVHSTL, LVPECL, and SSTL input signal standards with LVDS differential output format.

Q: Are both parts RoHS compliant?

A: Yes. Both the PI6C48543LEX and 8543BGLF are ROHS3 compliant and carry MSL Level 1 moisture sensitivity ratings.

Q: What is the maximum operating frequency for these clock buffers?

A: Both parts are rated for maximum clock distribution frequencies up to 800 MHz.

Q: What supply voltage is required for operation?

A: Both parts operate with a supply voltage range of 3.135V ~ 3.465V.