MPC93H51ACR2 Equivalent & Substitute Parts

Part Overview

The MPC93H51ACR2 is a PLL Clock Generator IC manufactured by Renesas Electronics Corporation, designed for 240MHz clock generation applications in a 32-LQFP surface mount package. This device features PLL functionality with bypass capability, supporting LVCMOS and LVPECL input formats with LVCMOS output. The product is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	PLL Clock Generator
Frequency - Max	240MHz
PLL with Bypass	Yes
Input Formats	LVCMOS, LVPECL
Output Format	LVCMOS
Voltage - Supply	3.135V ~ 3.465V
Operating Temperature	0°C ~ 70°C
Package / Case	32-LQFP
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

The 8T49N285A-999NLGI8 qualifies as a functional substitute based on the following core substitution criteria:

Matching Parameters:

Manufacturer: Renesas Electronics Corporation (same source)
Category: Clock/Timing (identical functional class)
PLL with Bypass: Yes (core functionality preserved)
Input Support: Includes LVCMOS and LVPECL (covers original input requirements)
Output Support: Includes LVCMOS (maintains output compatibility)
Supply Voltage Range: 2.375V ~ 3.465V (encompasses original 3.135V ~ 3.465V range)
Mounting Type: Surface Mount (same assembly method)
MSL Rating: 3 (168 Hours) (identical moisture sensitivity)
REACH Status: REACH Unaffected (same compliance classification)

Extended Capabilities: The substitute part operates at 1GHz maximum frequency, exceeding the original 240MHz specification, and supports additional input/output formats (HCSL, LVDS, LVHSTL, HSCL) for enhanced system flexibility. Operating temperature range extends to -40°C ~ 85°C, providing broader environmental coverage.

Parameter Comparison

Parameter	MPC93H51ACR2	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 Formats	LVCMOS, LVPECL	HCSL, LVCMOS, LVDSM, LVHSTL, LVPECL, Crystal
Output Format	LVCMOS	HSCL, LVCMOS, LVDS, LVPECL
Frequency - Max	240MHz	1GHz
Voltage - Supply	3.135V ~ 3.465V	2.375V ~ 3.465V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C
Package / Case	32-LQFP	56-VFQFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
MSL Rating	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The 8T49N285A-999NLGI8 is suitable for applications requiring MPC93H51ACR2 replacement based on the following factors:

Product Status Alignment: The substitute part carries Active product status, ensuring long-term availability and manufacturing support, whereas the original part is Obsolete.

Compliance Certifications: Both parts maintain identical REACH Unaffected and ECCN EAR99 classifications, preserving regulatory compliance across supply chain transitions.

Functional Compatibility: The substitute retains all required input/output signal formats (LVCMOS, LVPECL) and PLL bypass functionality. The extended frequency capability (1GHz vs. 240MHz) and broader operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C) provide design margin without introducing incompatibility.

Package Transition Consideration: The substitute uses a 56-VFQFN package versus the original 32-LQFP. This requires PCB layout modification and schematic redesign. The increased pin count and different footprint necessitate board-level validation.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N285A-999NLGI8 directly replace the MPC93H51ACR2 without PCB modification?

A: No. The substitute part uses a 56-VFQFN Exposed Pad package compared to the original 32-LQFP package. PCB layout redesign, schematic updates, and functional testing are required.

Q: Are the input and output signal formats compatible?

A: Yes. The substitute supports LVCMOS and LVPECL inputs and LVCMOS output, covering all signal formats used by the original part. The substitute additionally supports HCSL, LVDS, LVHSTL, and Crystal inputs, plus HSCL and LVDS outputs for enhanced flexibility.

Q: What is the impact of the higher maximum frequency (1GHz vs. 240MHz)?

A: The substitute's higher frequency capability does not create incompatibility. Systems operating at 240MHz or below will function within the substitute's specifications. The extended frequency range provides design margin for future applications.

Q: Are supply voltage requirements compatible?

A: The substitute's supply voltage range (2.375V ~ 3.465V) encompasses the original specification (3.135V ~ 3.465V). Existing power supply designs will operate within acceptable parameters.

Q: Does the operating temperature range affect compatibility?

A: The substitute's extended range (-40°C ~ 85°C vs. 0°C ~ 70°C) is a superset of the original specification. Systems designed for 0°C ~ 70°C operation will function within the substitute's rated conditions.

Q: Are moisture sensitivity and compliance certifications identical?

A: Yes. Both parts carry MSL 3 (168 Hours) rating and identical REACH Unaffected and ECCN EAR99 classifications, preserving handling and regulatory requirements.

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