PI49FCT3805SE Equivalent & Substitute Parts

Part Overview

The PI49FCT3805SE is a Clock Fanout Buffer (Distribution) IC manufactured by Diodes Incorporated, designed for 1:5 clock distribution at frequencies up to 50 MHz. This component features a 20-SOIC package with CMOS/TTL input compatibility and CMOS output configuration. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Renesas Electronics Corporation offers multiple active alternatives that maintain functional and electrical compatibility while providing extended availability.

Substiute Parts

PI49FCT3805SE

Diodes IncorporatedIn Stock: 2889PI49FCT3805SE Datasheet

Current PartRFQ

49FCT3805SOG

Renesas Electronics CorporationIn Stock: 114649FCT3805SOG Datasheet

MFR RecommendedRFQ

49FCT3805SOG8

Renesas Electronics CorporationIn Stock: 84649FCT3805SOG8 Datasheet

MFR RecommendedRFQ

49FCT3805SOGI

Renesas Electronics CorporationIn Stock: 126249FCT3805SOGI Datasheet

MFR RecommendedRFQ

49FCT3805SOGI8

Renesas Electronics CorporationIn Stock: 75849FCT3805SOGI8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI49FCT3805SE is determined by the following critical parameters:

Mandatory Matching Parameters:

• Ratio - Input:Output: 1:5
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Voltage - Supply: 3V ~ 3.6V
• Mounting Type: Surface Mount
• Base Product Number: 49FCT3805

Acceptable Variation Parameters:

• Operating Temperature: The main part operates -40°C ~ 85°C. Substitutes with 0°C ~ 70°C operating range are acceptable for applications within the 0°C ~ 70°C window. Substitutes with -40°C ~ 85°C operating range provide full compatibility across all temperature conditions.
• Input/Output Logic Levels: The main part accepts CMOS and TTL inputs with CMOS outputs. Substitutes accepting CMOS and LVTTL inputs with CMOS and LVTTL outputs are compatible, as LVTTL is a subset of TTL specifications.
• Packaging Format: Tube and Tape & Reel (TR) packaging formats are interchangeable for component selection purposes.

All four Renesas Electronics Corporation alternatives (49FCT3805SOG, 49FCT3805SOG8, 49FCT3805SOGI, 49FCT3805SOGI8) meet these substitution criteria and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

All four Renesas Electronics Corporation substitutes are functionally equivalent to the PI49FCT3805SE and maintain active product status, ensuring long-term availability and supply chain reliability.

For applications requiring full temperature range compatibility (-40°C ~ 85°C): Select either 49FCT3805SOGI (Tube packaging) or 49FCT3805SOGI8 (Tape & Reel packaging). These variants provide identical operating temperature specifications to the original part.

For applications operating within 0°C ~ 70°C: The 49FCT3805SOG (Tube packaging) or 49FCT3805SOG8 (Tape & Reel packaging) are suitable alternatives with lower operating temperature ratings.

Packaging format selection: Choose Tube packaging for manual assembly or small-volume applications. Select Tape & Reel (TR) packaging for automated pick-and-place assembly or high-volume production runs.

All substitutes maintain ROHS3 compliance, MSL Level 1 rating, and identical electrical specifications for supply voltage, frequency performance, and logic compatibility within their respective operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can I use 49FCT3805SOG or 49FCT3805SOG8 as direct replacements for PI49FCT3805SE in all applications?

A: These variants are compatible only for applications operating within the 0°C ~ 70°C temperature range. If your application requires operation at temperatures below 0°C or above 70°C, use 49FCT3805SOGI or 49FCT3805SOGI8 instead, which support the full -40°C ~ 85°C range.

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

A: Tube packaging (SOG, SOGI) is suitable for manual assembly and small-volume applications. Tape & Reel packaging (SOG8, SOGI8) is designed for automated assembly equipment and high-volume production. Both formats contain identical components; the difference is in delivery and handling format only.

Q: Are the input/output logic level differences between the original part and substitutes significant?

A: No. The original part accepts CMOS and TTL inputs with CMOS outputs. All Renesas substitutes accept CMOS and LVTTL inputs with CMOS and LVTTL outputs. LVTTL is a subset of TTL specifications and is fully compatible with TTL-level signals. The substitutes provide enhanced output flexibility without compromising compatibility.

Q: Do all substitutes maintain the same 1:5 distribution ratio and 50 MHz frequency specification?

A: Yes. All four Renesas alternatives maintain identical 1:5 input-to-output ratio and 50 MHz maximum frequency specifications. The base product number 49FCT3805 is common across all variants, confirming functional equivalence.

Q: Are there any compliance or certification differences between the original and substitute parts?

A: No. All parts are ROHS3 compliant, carry MSL Level 1 (Unlimited) moisture sensitivity rating, and share identical REACH and ECCN classifications. Compliance status is uniform across all variants.