Renesas 8520DYLF Clock Fanout Buffer - Equivalent & Substitute Parts

Part Overview

The Renesas 8520DYLF is a Clock Fanout Buffer (Distribution) IC with 1:16 output ratio and 500 MHz maximum frequency. This component is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations. The 8520DYLF provides differential input and output capabilities with support for multiple input signal standards (HCSL, LVDS, LVHSTL, LVPECL, SSTL) and LVHSTL output configuration in a 48-LQFP surface mount package.

Substiute Parts

8520DYLF

Renesas Electronics CorporationIn Stock: 11988520DYLF Datasheet

Current PartRFQ

SY898530UTZ

Microchip TechnologyIn Stock: 1737SY898530UTZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Renesas 8520DYLF is determined by strict equivalence across the following critical parameters:

• Fanout Ratio: 1:16 input-to-output configuration
• Differential Signaling: Differential input and differential output capability
• Maximum Frequency: 500 MHz operation
• Supply Voltage Range: 3.135V ~ 3.465V compatibility
• Operating Temperature Range: 0°C ~ 70°C
• Package Format: 48-pin TQFP (7x7mm) surface mount
• Input Signal Compatibility: Support for HCSL, LVDS, LVHSTL, LVPECL, SSTL standards
• Moisture Sensitivity: MSL 3 classification

The Microchip Technology SY898530UTZ meets all functional and electrical requirements for direct substitution. While the output signal standard differs (LVPECL vs. LVHSTL), both are differential output standards compatible with the specified input signal types and operating parameters. The SY898530UTZ carries Active product status with ROHS3 compliance, providing long-term availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

The Microchip SY898530UTZ is the qualified substitute for the obsolete Renesas 8520DYLF. Selection is based on the following factors:

Product Status: The SY898530UTZ carries Active product status, ensuring continued manufacturing availability and supply chain stability. The 8520DYLF Obsolete classification necessitates transition to an alternative component.

Regulatory Compliance: The SY898530UTZ is ROHS3 compliant, meeting current environmental and hazardous substance restrictions. Both components maintain REACH Unaffected status.

Functional Equivalence: Identical fanout ratio (1:16), frequency rating (500 MHz), supply voltage range (3.135V ~ 3.465V), operating temperature range (0°C ~ 70°C), and package format (48-TQFP 7x7mm) ensure direct functional replacement.

Signal Standard Compatibility: While output standards differ (LVHSTL vs. LVPECL), both are differential output standards within the same voltage family and are compatible with the specified input signal types.

Inventory Availability: The SY898530UTZ maintains higher inventory levels (1682 Pcs) compared to the 8520DYLF (1120 Pcs), supporting immediate procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the Microchip SY898530UTZ directly replace the Renesas 8520DYLF in existing designs?

A: The SY898530UTZ meets all critical electrical and mechanical specifications for direct substitution. Both components share identical fanout ratio, frequency rating, supply voltage range, operating temperature range, and 48-TQFP package format. The output signal standard difference (LVPECL vs. LVHSTL) does not prevent substitution when the receiving circuit is designed to accept either differential output standard.

Q: What is the significance of the different output signal standards?

A: The 8520DYLF outputs LVHSTL while the SY898530UTZ outputs LVPECL. Both are differential signaling standards operating within compatible voltage ranges. Selection between them depends on the input requirements of the downstream receiver circuit. Verify that the receiving circuit can accept LVPECL input if substituting with the SY898530UTZ.

Q: Are the package dimensions identical between these components?

A: Both components use 48-pin TQFP packages with 7x7mm dimensions. The package designation differs slightly (48-LQFP vs. 48-TQFP), but the physical footprint and pin configuration are equivalent for PCB layout purposes.

Q: What is the Moisture Sensitivity Level (MSL) and why does it matter?

A: Both components carry MSL 3 classification with 168-hour floor life. This indicates moderate moisture sensitivity requiring controlled storage conditions and handling procedures. Components must be stored in dry conditions and baked before reflow soldering if floor life is exceeded.

Q: Does the ROHS3 compliance of the SY898530UTZ affect compatibility?

A: ROHS3 compliance indicates the component meets current environmental standards for hazardous substance restrictions. This is a regulatory advantage and does not affect electrical or mechanical compatibility with existing designs.

Q: What supply voltage tolerance should be observed?

A: Both components operate within the 3.135V ~ 3.465V supply voltage range. Ensure power supply regulation maintains this tolerance to guarantee proper clock distribution performance across all 16 output channels.