PI49FCT32805SE Equivalent & Substitute Parts

Part Overview

The PI49FCT32805SE is a Clock Fanout Buffer (Distribution) IC manufactured by Diodes Incorporated, designed for 1:5 clock distribution at frequencies up to 133 MHz. This device features CMOS input and output logic levels with a 20-SOIC package footprint. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

PI49FCT32805SE

Diodes IncorporatedIn Stock: 1174PI49FCT32805SE Datasheet

Current PartRFQ

PI49FCT32805QE

Diodes IncorporatedIn Stock: 3967PI49FCT32805QE Datasheet

MFR RecommendedRFQ

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 PI49FCT32805SE is determined by the following critical parameters:

Functional Parameters:

• Fanout Buffer (Distribution) type with 1:5 input-to-output ratio
• Maximum frequency capability of 133 MHz or greater
• CMOS input and output logic compatibility
• 2 internal circuits

Electrical Parameters:

• Supply voltage range: 2.97V ~ 3.63V (or compatible subset)
• Operating temperature range: -40°C ~ 85°C (or compatible subset)

Physical Parameters:

• 20-pin SOIC package (0.295", 7.50mm Width)
• Surface mount technology

Compliance Parameters:

• ROHS3 compliance
• MSL rating of 1 (Unlimited)

Substitute parts must maintain functional equivalence across all critical parameters while offering active product status for continued availability and support.

Parameter Comparison

Engineering Selection Recommendations

PI49FCT32805QE (Diodes Incorporated)

This part maintains identical electrical specifications to the PI49FCT32805SE with active product status. The primary difference is the package format: 20-SSOP (0.154", 3.90mm Width) versus the original 20-SOIC. This substitute is suitable for designs where the narrower SSOP footprint is compatible with PCB layout requirements. Full compliance with ROHS3 and MSL 1 rating is maintained.

49FCT3805SOG / 49FCT3805SOG8 (Renesas Electronics Corporation)

These Renesas parts provide functional equivalence in the 20-SOIC package matching the original footprint. Both support CMOS and LVTTL logic levels, offering broader input/output compatibility. Operating temperature range is limited to 0°C ~ 70°C, which is narrower than the original -40°C ~ 85°C specification. These parts are suitable for applications within the restricted temperature range. ROHS3 and MSL 1 compliance are maintained. The SOG8 variant uses Tape & Reel packaging; SOG uses Tube packaging.

49FCT3805SOGI / 49FCT3805SOGI8 (Renesas Electronics Corporation)

These Renesas parts provide the same 20-SOIC package footprint with extended operating temperature range of -40°C ~ 85°C, matching the original specification. CMOS and LVTTL logic support is included. Full ROHS3 and MSL 1 compliance apply. The SOGI8 variant uses Tape & Reel packaging; SOGI uses Tube packaging. These parts are the most direct functional replacements for temperature-critical applications.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can PI49FCT32805QE be used as a direct replacement for PI49FCT32805SE?

A: PI49FCT32805QE is functionally equivalent with identical electrical specifications and active product status. The primary difference is the package format: 20-SSOP versus 20-SOIC. PCB layout compatibility must be confirmed before substitution, as the SSOP package has a narrower body width (3.90mm vs 7.50mm).

Q: What is the key difference between the Renesas 49FCT3805 variants?

A: The Renesas parts differ in operating temperature range and packaging format. The 49FCT3805SOG and 49FCT3805SOG8 variants operate from 0°C to 70°C, while 49FCT3805SOGI and 49FCT3805SOGI8 extend to -40°C to 85°C. The "8" suffix indicates Tape & Reel packaging; parts without this suffix use Tube packaging. All maintain the 20-SOIC footprint.

Q: Are the Renesas 49FCT3805 parts compatible with the original PI49FCT32805SE supply voltage range?

A: The Renesas parts specify 3V ~ 3.6V supply voltage, which is a subset of the original 2.97V ~ 3.63V range. For applications requiring operation at 2.97V or 3.63V, the Diodes PI49FCT32805QE or the original specification must be confirmed with the system design.

Q: What packaging options are available for substitute parts?

A: PI49FCT32805QE uses 20-SSOP packaging. All Renesas 49FCT3805 variants use 20-SOIC packaging. Packaging format (Tube or Tape & Reel) is available for the Renesas parts, with the "8" suffix indicating Tape & Reel format.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes, all listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original PI49FCT32805SE specifications.

Q: Which substitute part is recommended for temperature-critical applications below 0°C or above 70°C?

A: For applications requiring -40°C to 85°C operation, use either PI49FCT32805QE (Diodes) or 49FCT3805SOGI / 49FCT3805SOGI8 (Renesas). The Renesas parts maintain the original 20-SOIC footprint, while the Diodes part uses 20-SSOP packaging.