MPC9351AC Equivalent & Substitute Parts

Part Overview

The MPC9351AC is a PLL Clock Generator IC manufactured by Renesas Electronics Corporation, designed for 200MHz clock generation in 32-LQFP surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The MPC9351AC provides LVCMOS and LVPECL input compatibility with LVCMOS output, supporting a 2:9 input-to-output frequency ratio with integrated PLL and bypass functionality.

Substiute Parts

MPC9351AC

Renesas Electronics CorporationIn Stock: 1349MPC9351AC Datasheet

Current PartRFQ

8T49N285A-999NLGI

Renesas Electronics CorporationIn Stock: 12518T49N285A-999NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPC9351AC is determined by the following critical parameters:

Core Functional Requirements:

• PLL Clock Generator with bypass capability
• Supply voltage range: 2.375V ~ 3.465V
• Operating temperature range: -40°C ~ 85°C
• Surface mount technology compatibility

Signal Compatibility:

• Input signal types: LVCMOS and LVPECL support
• Output signal type: LVCMOS capability
• Frequency generation capability at or above 200MHz

Physical Constraints:

• Surface mount package format
• Moisture sensitivity level MSL 3 or better

The substitute part 8T49N285A-999NLGI meets these core requirements while offering enhanced specifications including higher maximum frequency (1GHz), expanded input/output signal compatibility, and active product status for long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The 8T49N285A-999NLGI serves as a direct functional substitute for the obsolete MPC9351AC. Both components share identical supply voltage ranges, operating temperature specifications, and moisture sensitivity classifications. The substitute maintains full backward compatibility with LVCMOS and LVPECL signal standards required by the original design.

The 8T49N285A-999NLGI offers enhanced capabilities including 1GHz maximum frequency operation, expanded input signal compatibility (HCSL, LVDSM, LVHSTL, Crystal), and active product status ensuring long-term availability and manufacturing support. Both components carry identical REACH and ECCN compliance classifications, confirming regulatory equivalence.

Package differences exist: the MPC9351AC uses 32-LQFP while the 8T49N285A-999NLGI uses 56-VFQFN. PCB layout modifications are required to accommodate the different package footprint and pin configuration.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N285A-999NLGI directly replace the MPC9351AC without circuit modifications?

A: The 8T49N285A-999NLGI provides functional equivalence for clock generation and signal compatibility. However, the different package format (56-VFQFN versus 32-LQFP) requires PCB redesign. Pin-to-pin mapping must be verified against datasheets before implementation.

Q: What are the key compatibility factors for substitution?

A: Supply voltage range (2.375V ~ 3.465V), operating temperature (-40°C ~ 85°C), input signal types (LVCMOS, LVPECL), and output signal type (LVCMOS) are the primary compatibility determinants. Both components meet these specifications.

Q: Why is the MPC9351AC classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 8T49N285A-999NLGI maintains active status with ongoing manufacturing support.

Q: Are there compliance differences between these parts?

A: Both components share identical REACH and ECCN classifications (REACH Unaffected, EAR99), confirming regulatory equivalence for export and environmental compliance purposes.

Q: What is the impact of the frequency difference (200MHz versus 1GHz)?

A: The 8T49N285A-999NLGI's higher maximum frequency provides operational headroom beyond the MPC9351AC's 200MHz specification. Designs operating at or below 200MHz remain fully compatible.