Equivalent & Substitute Parts for 8304AMLFT Clock Fanout Buffer

Part Overview

The Renesas Electronics 8304AMLFT is a Clock Fanout Buffer (Distribution) IC with 1:4 output ratio and 200 MHz maximum frequency. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The 8304AMLFT operates with LVCMOS/LVTTL logic levels and is packaged in 8-SOIC surface mount configuration. Substitute parts must maintain functional equivalence in clock distribution applications while meeting current product availability and compliance requirements.

Substiute Parts

8304AMLFT

Renesas Electronics CorporationIn Stock: 52868304AMLFT Datasheet

Current PartRFQ

5PB1104CMGI8

Renesas Electronics CorporationIn Stock: 52195PB1104CMGI8 Datasheet

MFR RecommendedRFQ

PL133-47SC

Microchip TechnologyIn Stock: 775PL133-47SC Datasheet

MFR RecommendedRFQ

PL133-47SC-R

Microchip TechnologyIn Stock: 2343PL133-47SC-R Datasheet

MFR RecommendedRFQ

PL133-47SI

Microchip TechnologyIn Stock: 733PL133-47SI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the 8304AMLFT is based on the following critical parameters: 1:4 fanout ratio, maximum frequency capability, logic level compatibility (LVCMOS/LVTTL), surface mount packaging, and compliance certifications. Substitute parts are grouped into two categories based on functional and package compatibility:

Category 1: Direct Functional Equivalent (Active Product) The 5PB1104CMGI8 from Renesas Electronics maintains the same 1:4 fanout ratio and 200 MHz frequency specification. This part is active and represents the manufacturer-recommended upgrade path. The primary difference is package format (8-UFDFN vs. 8-SOIC) and expanded operating temperature range (-40°C to 85°C vs. 0°C to 70°C). Supply voltage range is broader (1.71V ~ 3.465V), providing enhanced flexibility for diverse power supply architectures.

Category 2: Functional Substitute with Frequency Derating (Microchip Technology) The PL133 series from Microchip Technology (PL133-47SC, PL133-47SC-R, PL133-47SI) provides 1:4 fanout functionality with reduced maximum frequency of 150 MHz. These parts maintain 8-SOIC package compatibility with the original 8304AMLFT, enabling direct PCB layout reuse. Operating temperature variants are available: standard (0°C ~ 70°C) and extended (-40°C ~ 85°C). Supply voltage range is 2.25V ~ 3.63V. Packaging options include Tube (PL133-47SC, PL133-47SI) and Tape & Reel (PL133-47SC-R).

Parameter Comparison

Engineering Selection Recommendations

For applications requiring 200 MHz operation and active product status: The 5PB1104CMGI8 is the manufacturer-recommended substitute. This Renesas part maintains full frequency capability and is actively produced. The package change from 8-SOIC to 8-UFDFN requires PCB layout modification. The extended operating temperature range (-40°C to 85°C) and lower minimum supply voltage (1.71V) provide operational advantages over the original 8304AMLFT. MSL rating of 1 (Unlimited) matches the original part's moisture sensitivity specification.

For applications with 150 MHz frequency tolerance and package compatibility priority: The Microchip PL133 series offers direct 8-SOIC package compatibility, eliminating PCB redesign requirements. PL133-47SC-R in Tape & Reel packaging is optimal for high-volume production. PL133-47SI supports extended temperature operation (-40°C to 85°C) for industrial applications. All PL133 variants carry ROHS3 compliance and maintain the 1:4 fanout ratio. MSL rating of 3 (168 Hours) requires standard moisture control during assembly.

Compliance and certification alignment: All substitute parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the original 8304AMLFT regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can the 5PB1104CMGI8 directly replace the 8304AMLFT on existing PCBs? A: The 5PB1104CMGI8 uses an 8-UFDFN package (2x2mm) versus the 8-SOIC package of the 8304AMLFT. Direct PCB replacement is not possible without layout modification. However, the functional performance is equivalent at 200 MHz operation.

Q: What is the frequency limitation of the PL133 series substitutes? A: The PL133-47SC, PL133-47SC-R, and PL133-47SI are rated for maximum 150 MHz operation. Applications requiring frequencies above 150 MHz must use the 5PB1104CMGI8 or equivalent 200 MHz-capable alternatives.

Q: Are the Microchip PL133 parts pin-compatible with the 8304AMLFT? A: Yes. The PL133 series maintains the same 8-SOIC (0.154", 3.90mm Width) package and pinout as the 8304AMLFT, enabling direct PCB substitution without layout changes.

Q: What is the difference between PL133-47SC, PL133-47SC-R, and PL133-47SI? A: PL133-47SC and PL133-47SI are supplied in Tube packaging with operating temperature ranges of 0°C ~ 70°C and -40°C ~ 85°C respectively. PL133-47SC-R is supplied in Tape & Reel format with 0°C ~ 70°C operating range, optimized for automated assembly processes.

Q: Does the 5PB1104CMGI8 support LVTTL logic levels? A: The 5PB1104CMGI8 supports LVCMOS input and output only. The original 8304AMLFT supports both LVCMOS and LVTTL. Applications requiring LVTTL compatibility must use the Microchip PL133 series or verify LVCMOS compatibility with existing LVTTL interfaces.

Q: What are the moisture sensitivity differences between substitutes? A: The 8304AMLFT and 5PB1104CMGI8 have MSL rating 1 (Unlimited moisture exposure). The Microchip PL133 series has MSL rating 3 (168 hours maximum exposure before reflow). Standard moisture control procedures are required for PL133 parts during storage and assembly.

Q: Can I use the PL133 series in applications currently running at 200 MHz? A: No. The PL133 series maximum frequency is 150 MHz. Using these parts in 200 MHz applications will result in signal integrity degradation and potential system failure. Frequency derating must be confirmed before substitution.