MPC9351ACR2 Equivalent & Substitute Parts

Part Overview

The MPC9351ACR2 is a PLL Clock Generator IC manufactured by Renesas Electronics Corporation, designed for 200MHz clock generation applications in a 32-LQFP surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates across a supply voltage range of 2.375V to 3.465V with LVCMOS and LVPECL input compatibility, delivering LVCMOS output signals suitable for timing-critical applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MPC9351ACR2
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	PLL Clock Generator
Frequency - Max	200MHz
Input Signals	LVCMOS, LVPECL
Output Signals	LVCMOS
Voltage - Supply	2.375V ~ 3.465V
Operating Temperature	-40°C ~ 85°C
Package / Case	32-LQFP
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the MPC9351ACR2 is determined by the following critical parameters:

Electrical Compatibility:

Supply voltage range: 2.375V ~ 3.465V (must match or encompass)
PLL functionality with bypass capability
Input signal compatibility: LVCMOS and LVPECL support
Output signal type: LVCMOS capability required
Operating temperature range: -40°C ~ 85°C minimum

Mechanical Compatibility:

Surface mount technology
Pin count and footprint considerations
Moisture sensitivity level: MSL 3 or better

Regulatory Compliance:

REACH Unaffected status
ECCN: EAR99 classification

The substitute part 8T49N285A-999NLGI8 meets these criteria while offering enhanced frequency capability (1GHz maximum) and expanded input/output signal format support, making it suitable for applications requiring the core functionality of the MPC9351ACR2.

Parameter Comparison

Parameter	MPC9351ACR2	8T49N285A-999NLGI8
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Category	Clock/Timing	Clock/Timing
Type	PLL Clock Generator	IC Translator Universal Frequency
PLL with Bypass	Yes	Yes
Input Signals	LVCMOS, LVPECL	HCSL, LVCMOS, LVDSM, LVHSTL, LVPECL, Crystal
Output Signals	LVCMOS	HSCL, LVCMOS, LVDS, LVPECL
Number of Circuits	1	1
Frequency - Max	200MHz	1GHz
Voltage - Supply	2.375V ~ 3.465V	2.375V ~ 3.465V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	32-LQFP	56-VFQFN Exposed Pad
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
Product Status	Obsolete	Active

Engineering Selection Recommendations

The 8T49N285A-999NLGI8 serves as a functional substitute for the obsolete MPC9351ACR2 based on the following engineering criteria:

Voltage and Temperature Alignment: Both parts operate within identical supply voltage (2.375V ~ 3.465V) and temperature ranges (-40°C ~ 85°C), ensuring direct compatibility in existing thermal and power delivery designs.

Signal Compatibility: The substitute part maintains full LVCMOS and LVPECL input/output capability required by the original design while offering extended signal format support (HCSL, LVDS, LVPECL output options) for enhanced system flexibility.

Regulatory Compliance: Both components carry identical REACH Unaffected status and EAR99 ECCN classification, maintaining compliance with export and environmental regulations.

Product Status Advantage: The substitute part holds Active product status, ensuring long-term availability, manufacturing support, and supply chain stability compared to the obsolete MPC9351ACR2.

Package Consideration: The 56-VFQFN package differs from the original 32-LQFP, requiring PCB layout and footprint redesign. This substitution is suitable for new designs or redesign efforts where board-level modifications are feasible.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N285A-999NLGI8 directly replace the MPC9351ACR2 without design changes?

A: Electrical substitution is possible due to matching supply voltage, temperature range, and signal compatibility. However, package differences (56-VFQFN versus 32-LQFP) require PCB layout modifications and cannot support direct socket replacement.

Q: What are the key electrical parameters that determine substitution eligibility?

A: Supply voltage range (2.375V ~ 3.465V), operating temperature (-40°C ~ 85°C), PLL with bypass functionality, and LVCMOS/LVPECL signal support are the primary criteria. The substitute part meets or exceeds all these requirements.

Q: Does the substitute part support the same input/output signal formats?

A: The substitute part supports all input and output formats of the original part (LVCMOS and LVPECL) plus additional formats (HCSL, LVDS, LVHSTL, Crystal input). This expanded capability provides design flexibility without compromising original functionality.

Q: What is the significance of the different maximum frequency ratings?

A: The MPC9351ACR2 operates to 200MHz while the substitute operates to 1GHz. For applications requiring only 200MHz operation, the substitute part functions within its specified range. The higher frequency capability does not create incompatibility.

Q: Are there regulatory or compliance differences between these parts?

A: Both parts carry identical REACH Unaffected status, EAR99 ECCN classification, and MSL 3 moisture sensitivity ratings. No compliance barriers exist for substitution.

Q: Why is the substitute part listed as Active while the original is Obsolete?

A: The MPC9351ACR2 has reached end-of-life status. The 8T49N285A-999NLGI8 represents Renesas Electronics' current-generation solution for equivalent clock generation and signal translation applications, ensuring ongoing manufacturing support and supply availability.

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