Equivalent & Substitute Parts for 85311AMILF

Part Overview

The 85311AMILF is a Clock Fanout Buffer (Distribution) IC manufactured by Renesas Electronics Corporation, designed for 1:2 clock distribution at frequencies up to 1 GHz. This device features differential input and output capabilities with support for multiple input signal standards including HCSL, LVDS, LVHSTL, LVPECL, and SSTL, with ECL and LVPECL output options. The part is packaged in an 8-SOIC (0.154", 3.90mm Width) surface mount configuration.

The 85311AMILF has reached obsolete product status. Identifying qualified substitute components is necessary to maintain design continuity and ensure supply chain availability for new production runs and legacy system support.

Substiute Parts

85311AMILF

Renesas Electronics CorporationIn Stock: 191785311AMILF Datasheet

Current PartRFQ

MC100EP11DG

onsemiIn Stock: 1164MC100EP11DG Datasheet

MFR RecommendedRFQ

SY100EP11UZG

Microchip TechnologyIn Stock: 2173SY100EP11UZG Datasheet

MFR RecommendedRFQ

SY10EP11UZG

Microchip TechnologyIn Stock: 3196SY10EP11UZG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 85311AMILF is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — physical and electrical footprint compatibility
• Mounting Type: Surface Mount — assembly process compatibility
• Ratio - Input:Output: 1:2 — functional equivalence for clock distribution topology
• Differential - Input:Output: Yes/Yes — signal integrity and interface requirements
• Operating Temperature: -40°C ~ 85°C — thermal operating range
• RoHS Status: ROHS3 Compliant — regulatory compliance requirement
• Moisture Sensitivity Level (MSL): 1 (Unlimited) — handling and storage compatibility

Performance Enhancement Allowance: Substitute parts may exceed the maximum frequency specification of 1 GHz, as higher-frequency devices remain backward compatible with lower-frequency applications. Supply voltage ranges may be broader than the original specification, provided the minimum voltage requirement does not fall below 2.375V.

Input/Output Standard Compatibility: Substitute parts must support at least one common input standard (ECL or LVPECL) and one common output standard (ECL or LVPECL) with the 85311AMILF to ensure signal compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts meet the mandatory compatibility criteria for direct replacement of the 85311AMILF:

MC100EP11DG (onsemi): This part is actively manufactured and maintains the same 8-SOIC package footprint and operating temperature range. It provides enhanced frequency capability at 3 GHz and supports ECL and PECL standards. The supply voltage range begins at 3V, which is within the upper portion of the original specification. This part is suitable for applications where ECL/PECL signal compatibility is required.

SY100EP11UZG (Microchip Technology): This actively produced device offers the broadest input and output standard support, including ECL, LVECL, LVPECL, and PECL. The supply voltage range of 2.375V ~ 5.5V fully encompasses the original specification. The 3 GHz maximum frequency exceeds the original 1 GHz requirement. This part provides maximum flexibility for signal standard compatibility.

SY10EP11UZG (Microchip Technology): This actively manufactured part supports LVECL and LVPECL standards with a supply voltage range of 2.375V ~ 5.5V. The 3 GHz frequency capability exceeds the original specification. This part is optimized for low-voltage differential signaling applications.

All substitute parts carry ROHS3 compliance and MSL Level 1 ratings, ensuring regulatory and handling compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can the 85311AMILF be directly replaced with any of these substitute parts?

A: Yes. All three substitute parts share the same 8-SOIC package footprint, 1:2 distribution ratio, differential input/output configuration, and operating temperature range. They are pin-compatible and functionally equivalent for clock distribution applications.

Q: What is the primary difference between the three substitute options?

A: The key differences lie in input and output signal standard support. MC100EP11DG supports ECL and PECL. SY100EP11UZG provides the broadest standard support (ECL, LVECL, LVPECL, PECL). SY10EP11UZG is optimized for low-voltage differential standards (LVECL, LVPECL). All three operate at 3 GHz, exceeding the original 1 GHz specification.

Q: Are there supply voltage considerations when substituting?

A: The MC100EP11DG has a minimum supply voltage of 3V, which is higher than the original 2.375V minimum. If your design operates at voltages below 3V, use either SY100EP11UZG or SY10EP11UZG, both of which support 2.375V minimum. All three parts support higher voltages up to 5.5V.

Q: Do all substitute parts maintain the same package dimensions?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with surface mount configuration. PCB footprints and assembly processes remain unchanged.

Q: Are there any compliance or regulatory differences?

A: No. All substitute parts are ROHS3 compliant and carry MSL Level 1 ratings, matching the original part's regulatory status and handling requirements.

Q: Which substitute part should I select for a new design?

A: Selection depends on your signal standard requirements. For ECL/PECL-only applications, MC100EP11DG is suitable. For designs requiring low-voltage differential standards, SY10EP11UZG is optimized. For maximum flexibility across multiple signal standards, SY100EP11UZG is recommended.