74FCT3807APYG Clock Fanout Buffer Equivalent & Substitute Parts

Part Overview

The 74FCT3807APYG is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:10 clock distribution at 100 MHz. This active product operates with LVTTL input and CMOS/TTL output in a 20-SSOP surface mount package. Substitute parts are necessary when the original part is unavailable, when alternative packaging formats are required, or when different frequency ratings better match application requirements while maintaining functional compatibility.

Substiute Parts

74FCT3807APYG

Renesas Electronics CorporationIn Stock: 219074FCT3807APYG Datasheet

Current PartRFQ

PI49FCT32807QE

Diodes IncorporatedIn Stock: 7173PI49FCT32807QE Datasheet

MFR RecommendedRFQ

PI49FCT3807BQEX

Diodes IncorporatedIn Stock: 53437PI49FCT3807BQEX Datasheet

MFR RecommendedRFQ

PI49FCT3807CQE

Diodes IncorporatedIn Stock: 3268PI49FCT3807CQE Datasheet

MFR RecommendedRFQ

PI49FCT3807CQEX

Diodes IncorporatedIn Stock: 7048PI49FCT3807CQEX Datasheet

MFR RecommendedRFQ

PI49FCT3807QE

Diodes IncorporatedIn Stock: 3919PI49FCT3807QE Datasheet

MFR RecommendedRFQ

PI49FCT3807QEX

Diodes IncorporatedIn Stock: 2203PI49FCT3807QEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74FCT3807APYG is determined by the following critical parameters:

• Ratio (1:10): All substitute parts maintain identical 1:10 input-to-output distribution
• Package Type: Substitutes use 20-SSOP or 20-QSOP packages, both surface mount configurations
• Frequency Rating: Substitutes range from 50 MHz to 133 MHz; parts rated at or above 100 MHz are direct functional equivalents
• Supply Voltage: All substitutes operate within 3V ~ 3.6V range, compatible with the original specification
• Input/Output Logic Levels: Substitutes support CMOS and/or TTL logic, maintaining compatibility with LVTTL input requirements
• Operating Temperature: Substitute parts extend the temperature range to -40°C ~ 85°C, providing broader operational capability
• Compliance: All substitutes maintain ROHS3 compliance and MSL 1 rating

Diodes Incorporated PI49FCT series parts provide direct functional equivalents with enhanced specifications and improved availability.

Parameter Comparison

Engineering Selection Recommendations

Direct Functional Equivalents (100 MHz Rating): PI49FCT3807CQE and PI49FCT3807CQEX are the primary substitutes, matching the 100 MHz frequency specification of the 74FCT3807APYG. Both parts support CMOS and TTL input/output logic levels and operate within the specified 3V ~ 3.6V supply range. These parts extend the operating temperature range to -40°C ~ 85°C, providing enhanced thermal capability. Selection between CQE (Tube) and CQEX (Tape & Reel) depends on packaging requirements.

Higher Frequency Alternative: PI49FCT32807QE operates at 133 MHz, exceeding the original specification. This part accepts CMOS input and provides CMOS output, suitable for applications requiring higher clock distribution speeds within the same 1:10 ratio and supply voltage parameters.

Lower Frequency Alternatives: PI49FCT3807BQEX (80 MHz) and PI49FCT3807QE/QEX (50 MHz) are suitable for applications with reduced frequency requirements. These parts maintain full CMOS/TTL compatibility and extended temperature operation.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can PI49FCT3807CQE directly replace 74FCT3807APYG in existing designs? A: Yes. Both parts maintain the 1:10 distribution ratio, 100 MHz frequency rating, 3V ~ 3.6V supply voltage, and CMOS/TTL output compatibility. The primary difference is the package width (0.154" vs 0.209"), which may require PCB layout verification for pin-to-pin compatibility.

Q: What is the difference between PI49FCT3807CQE and PI49FCT3807CQEX? A: Both parts are electrically identical with 100 MHz frequency rating. CQE is supplied in Tube packaging, while CQEX is supplied in Tape & Reel format. Selection depends on assembly process requirements and quantity needs.

Q: Is PI49FCT32807QE compatible with 74FCT3807APYG applications? A: PI49FCT32807QE maintains the 1:10 ratio and supply voltage compatibility but operates at 133 MHz with CMOS input/output only. It is suitable for applications where higher frequency capability is beneficial and CMOS-only logic levels are acceptable.

Q: Can lower frequency parts (50 MHz, 80 MHz) be used as substitutes? A: Yes. PI49FCT3807QE/QEX (50 MHz) and PI49FCT3807BQEX (80 MHz) are functional substitutes for applications not requiring the full 100 MHz bandwidth. All maintain the 1:10 distribution ratio and supply voltage specifications.

Q: What are the package differences between substitute parts? A: The 74FCT3807APYG uses a 20-SSOP package with 0.209" width. All Diodes Incorporated substitutes use 20-SSOP or 20-QSOP packages with 0.154" width. Both are surface mount configurations; PCB layout verification is necessary to confirm pin alignment and spacing compatibility.

Q: Do all substitute parts meet the same compliance standards? A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original component's regulatory and environmental specifications.