4MA074250Z3AACTGI MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The 4MA074250Z3AACTGI is a 74.25 MHz MEMS-based XO (Standard) oscillator manufactured by Renesas Electronics Corporation, featuring LVPECL output and 3.3V supply with Enable/Disable functionality. This component is classified as Obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

The primary reason for identifying substitute parts is the obsolete status of the original component. Active alternatives with identical electrical and mechanical specifications ensure design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Frequency	74.25 MHz
Output Type	LVPECL
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±50ppm
Operating Temperature Range	-40°C ~ 85°C
Package Type	6-SMD, No Lead
Mounting Type	Surface Mount
Base Resonator	MEMS

Substitute Part Grouping Explanation

Substitute parts for the 4MA074250Z3AACTGI are identified based on the following critical parameters that must remain constant:

Frequency: 74.25 MHz (exact match required)
Output Type: LVPECL (signal format compatibility)
Supply Voltage: 3.3V (power supply compatibility)
Function: Enable/Disable (operational feature match)
Frequency Stability: ±50ppm (timing accuracy specification)
Operating Temperature Range: -40°C ~ 85°C (environmental compatibility)
Package Type: 6-SMD, No Lead (PCB footprint compatibility)
Mounting Type: Surface Mount (assembly process compatibility)

The XLP735074.250000I qualifies as a substitute because it maintains all critical electrical parameters and package specifications. The primary difference is the base resonator technology (Crystal vs. MEMS) and product status (Active vs. Obsolete), which does not affect functional compatibility in the application circuit.

Parameter Comparison

Parameter	4MA074250Z3AACTGI (Original)	XLP735074.250000I (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Frequency	74.25 MHz	74.25 MHz
Output Type	LVPECL	LVPECL
Supply Voltage	3.3V	3.3V
Function	Enable/Disable	Enable/Disable
Frequency Stability	±50ppm	±50ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	6-SMD, No Lead	6-SMD, No Lead
Mounting Type	Surface Mount	Surface Mount
Base Resonator	MEMS	Crystal
Product Status	Obsolete	Active
Current - Supply (Max)	100mA (Typ)	120mA
Size / Dimension	0.197" L x 0.126" W (5.00mm x 3.20mm)	0.295" L x 0.205" W (7.50mm x 5.20mm)
Height - Seated (Max)	0.035" (0.90mm)	0.055" (1.40mm)
Moisture Sensitivity Level (MSL)	3 (168 Hours)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant
ECCN	EAR99	EAR99
HTSUS	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

The XLP735074.250000I is a direct functional substitute for the 4MA074250Z3AACTGI based on the following engineering criteria:

Electrical Compatibility: Both parts operate at identical frequency (74.25 MHz), output type (LVPECL), supply voltage (3.3V), and frequency stability (±50ppm). The Enable/Disable function is preserved, ensuring circuit-level compatibility.

Package and Mounting Compatibility: Both components use 6-SMD, No Lead surface mount packages. Physical dimensions differ slightly (original: 5.00mm x 3.20mm; substitute: 7.50mm x 5.20mm), requiring PCB layout verification to confirm clearance and thermal management adequacy.

Product Status and Supply Chain: The substitute part holds Active status with established supply availability (833 Pcs in stock), addressing the obsolescence risk of the original component.

Compliance and Environmental: The substitute part carries ROHS3 compliance and MSL 1 rating (Unlimited moisture exposure), providing superior environmental handling compared to the original MSL 3 rating (168 Hours).

Current Consumption: The substitute part specifies 120mA maximum supply current versus 100mA typical for the original. System power budget analysis is required to confirm acceptability within the application's power delivery constraints.

Frequently Asked Questions (FAQ)

Q: Can the XLP735074.250000I be used as a direct drop-in replacement for the 4MA074250Z3AACTGI?

A: Electrical and functional compatibility is confirmed. Physical dimensions differ, requiring PCB layout verification. The substitute is 1.6mm larger in length and 0.5mm larger in height. Clearance around the oscillator footprint must be assessed before implementation.

Q: What is the difference between MEMS and Crystal resonators in these oscillators?

A: Both technologies achieve the specified 74.25 MHz frequency and ±50ppm stability. MEMS resonators (original part) and Crystal resonators (substitute part) differ in manufacturing process and environmental sensitivity. The substitute's MSL 1 rating indicates superior moisture resistance compared to the original MSL 3 rating.

Q: Are there any power supply differences between these parts?

A: Both parts operate on 3.3V supply. The substitute specifies 120mA maximum current versus 100mA typical for the original. System power delivery capability must accommodate the higher current specification.

Q: Is the package footprint identical between these parts?

A: Both use 6-SMD, No Lead packages with identical pin configuration. Physical body dimensions differ: original is 5.00mm x 3.20mm x 0.90mm; substitute is 7.50mm x 5.20mm x 1.40mm. PCB layout must accommodate the larger footprint.

Q: What compliance certifications apply to the substitute part?

A: The XLP735074.250000I carries ROHS3 compliance and EAR99 export classification. Both parts share identical HTSUS classification (8542.39.0001).

Q: Can the Enable/Disable function be used identically on both parts?

A: Yes. Both parts provide Enable/Disable functionality with identical 3.3V logic levels and operational characteristics.

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