Equivalent & Substitute Parts for Renesas 8304AMLF Clock Fanout Buffer

Part Overview

The Renesas 8304AMLF is a Clock Fanout Buffer (Distribution) IC with 1:4 output ratio and 200 MHz maximum frequency, housed in an 8-SOIC package. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The device provides LVCMOS/LVTTL input and output compatibility for clock distribution applications requiring single-to-quad fanout capability.

Substiute Parts

8304AMLF

Renesas Electronics CorporationIn Stock: 20608304AMLF Datasheet

Current PartRFQ

5PB1104CMGI

Renesas Electronics CorporationIn Stock: 42075PB1104CMGI 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 eligibility for the 8304AMLF is determined by the following critical parameters:

Core Functional Requirements:

• Fanout Buffer (Distribution) type with 1:4 input-to-output ratio
• Maximum frequency capability of 200 MHz or greater
• LVCMOS input and output logic compatibility
• Single circuit configuration

Electrical Compatibility:

• Supply voltage range must overlap with or encompass the original 3.135V ~ 3.465V specification
• Operating temperature range must support the application environment

Physical & Packaging Constraints:

• Surface mount technology required
• Package footprint compatibility (8-SOIC or equivalent pinout)

Compliance & Regulatory:

• ROHS3 compliance maintained
• REACH unaffected status

The substitute parts are grouped into two categories based on these criteria: active Renesas alternatives with enhanced specifications and Microchip Technology equivalents with compatible electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Renesas 5PB1104CMGI is the primary recommended substitute for the 8304AMLF. This part maintains Renesas manufacturer continuity, matches the 200 MHz frequency specification, and is classified as active product status. The 5PB1104CMGI offers extended supply voltage range (1.71V ~ 3.465V) and wider operating temperature range (-40°C ~ 85°C), providing greater design flexibility. The 8-UFDFN package requires PCB layout modification compared to the original 8-SOIC footprint.

Microchip PL133-47SC-R (Tape & Reel packaging) and PL133-47SI (Tube packaging) are secondary alternatives when Renesas sourcing is constrained. Both maintain 8-SOIC package compatibility with the original design, eliminating PCB redesign requirements. These parts operate at 150 MHz maximum frequency, which is suitable for applications not requiring the full 200 MHz capability of the original part. The PL133-47SI variant supports extended temperature range (-40°C ~ 85°C), matching the 5PB1104CMGI temperature specification.

Microchip PL133-47SC (Tube packaging) is functionally equivalent to the PL133-47SC-R and PL133-47SI variants but operates within the standard 0°C ~ 70°C temperature range, matching the original 8304AMLF specification.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can the 5PB1104CMGI directly replace the 8304AMLF without PCB modifications?

A: The 5PB1104CMGI uses an 8-UFDFN package (2x2mm) instead of the original 8-SOIC package. PCB layout and footprint modifications are required. Pin-to-pin functional compatibility exists, but physical placement differs.

Q: What is the frequency limitation when using Microchip PL133 series substitutes?

A: The Microchip PL133-47SC, PL133-47SC-R, and PL133-47SI parts operate at 150 MHz maximum frequency, compared to the 200 MHz specification of the 8304AMLF. These substitutes are suitable for applications operating at or below 150 MHz.

Q: Are there temperature range differences between substitute options?

A: Yes. The 5PB1104CMGI and PL133-47SI support -40°C ~ 85°C operating range. The PL133-47SC and PL133-47SC-R support 0°C ~ 70°C range, matching the original 8304AMLF specification. Select based on application temperature requirements.

Q: What is the difference between PL133-47SC, PL133-47SC-R, and PL133-47SI?

A: These three Microchip parts are functionally identical with the following differences: PL133-47SC is supplied in Tube packaging, PL133-47SC-R is supplied in Tape & Reel (TR) packaging, and PL133-47SI is supplied in Tube packaging with extended temperature range (-40°C ~ 85°C). Selection depends on packaging requirements and temperature specifications.

Q: Does the 5PB1104CMGI support LVTTL logic levels?

A: The 5PB1104CMGI supports LVCMOS input and output only. The original 8304AMLF supports both LVCMOS and LVTTL. If LVTTL compatibility is required, use Microchip PL133 series alternatives, which also support LVCMOS only but maintain 8-SOIC package compatibility.

Q: What is the MSL (Moisture Sensitivity Level) difference?

A: The 8304AMLF and 5PB1104CMGI have MSL 1 (Unlimited) rating. The Microchip PL133 series parts have MSL 3 (168 Hours) rating, requiring controlled moisture exposure during storage and handling.

Q: Can I use these substitutes interchangeably in production?

A: Substitution depends on application requirements. For 200 MHz operation, only the 5PB1104CMGI is suitable. For 150 MHz or lower frequency applications, Microchip PL133 series parts are compatible. Package differences (8-UFDFN vs. 8-SOIC) require design validation before production implementation.