TC-80.000MBE-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-80.000MBE-T is an 80 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable functionality, and is housed in a 4-SMD, No Lead package. The part is classified as Obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Frequency	80 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±50ppm
Operating Temperature Range	-40°C ~ 85°C
Package Type	4-SMD, No Lead
Package Dimensions	3.20mm x 2.50mm
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TC-80.000MBE-T is determined by the following critical parameters:

Mandatory Matching Parameters:

Frequency: 80 MHz
Output Type: CMOS
Supply Voltage: 3.3V
Function: Enable/Disable
Package Type: 4-SMD, No Lead
Package Dimensions: 3.20mm x 2.50mm
Operating Temperature Range: -40°C ~ 85°C
Frequency Stability: ±50ppm

Allowed Variation Parameters:

Base Resonator Type (MEMS or Crystal)
Current Supply (Max): Substitute must not exceed main part specification
Height - Seated (Max): Substitute must not exceed main part specification
Product Status: Active status preferred for long-term availability

The 7X-80.000MBE-T qualifies as a direct substitute because it maintains all mandatory matching parameters while offering improved product status (Active vs. Obsolete) and reduced maximum supply current (20mA vs. 30mA).

Parameter Comparison

Parameter	TC-80.000MBE-T (Main)	7X-80.000MBE-T (Substitute)	Compatibility
Manufacturer	TXC CORPORATION	TXC CORPORATION	Same
Base Resonator	MEMS	Crystal	Different Technology
Type	XO (Standard)	XO (Standard)	Same
Frequency	80 MHz	80 MHz	Identical
Function	Enable/Disable	Enable/Disable	Identical
Output	CMOS	CMOS	Identical
Voltage - Supply	3.3V	3.3V	Identical
Frequency Stability	±50ppm	±50ppm	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Current - Supply (Max)	30mA	20mA	Substitute Lower
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	4-SMD, No Lead	4-SMD, No Lead	Identical
Size / Dimension	3.20mm x 2.50mm	3.20mm x 2.50mm	Identical
Height - Seated (Max)	0.80mm	1.10mm	Substitute Higher
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute Active
RoHS Status	Not Specified	RoHS Compliant	Substitute Compliant

Engineering Selection Recommendations

The 7X-80.000MBE-T is a qualified substitute for the TC-80.000MBE-T based on the following engineering criteria:

Electrical Compatibility: All electrical parameters match exactly, including frequency, output type, supply voltage, function, frequency stability, and operating temperature range. The substitute exhibits lower maximum supply current (20mA vs. 30mA), which is advantageous for power budget considerations.

Mechanical Compatibility: Both parts share identical package type (4-SMD, No Lead) and footprint dimensions (3.20mm x 2.50mm). The substitute has a maximum seated height of 1.10mm compared to 0.80mm for the main part. PCB layout clearance must be verified to accommodate this 0.30mm height difference.

Product Status and Compliance: The 7X-80.000MBE-T holds Active product status, ensuring long-term availability and continued manufacturing support. The substitute is RoHS Compliant and REACH Unaffected, providing regulatory compliance advantages over the Obsolete main part.

Resonator Technology Difference: The main part uses MEMS technology while the substitute uses Crystal technology. Both deliver identical frequency stability (±50ppm) and operating characteristics within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the 7X-80.000MBE-T directly replace the TC-80.000MBE-T in existing designs?

A: Yes, the 7X-80.000MBE-T is electrically and functionally equivalent. All electrical specifications match exactly. PCB layout must accommodate the 0.30mm increase in maximum seated height (1.10mm vs. 0.80mm).

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

A: The TC-80.000MBE-T uses MEMS (Micro-Electro-Mechanical Systems) technology, while the 7X-80.000MBE-T uses Crystal technology. Both deliver identical frequency stability (±50ppm) and operating performance within the specified parameters. The choice between technologies does not affect electrical compatibility.

Q: Does the lower maximum supply current of the 7X-80.000MBE-T affect performance?

A: No. The 7X-80.000MBE-T maximum supply current is 20mA compared to 30mA for the TC-80.000MBE-T. Lower maximum current consumption is beneficial for power budget and thermal management. Actual operating current depends on circuit design and load conditions.

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

A: The 7X-80.000MBE-T is RoHS Compliant and REACH Unaffected. The TC-80.000MBE-T compliance status is not specified. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the impact of the 0.30mm height difference on PCB design?

A: The 7X-80.000MBE-T has a maximum seated height of 1.10mm compared to 0.80mm for the TC-80.000MBE-T. Verify that PCB layout, solder mask clearance, and any overlying components or shielding accommodate this additional height. Footprint dimensions remain identical (3.20mm x 2.50mm).

Q: Is the 7X-80.000MBE-T available for new designs?

A: Yes. The 7X-80.000MBE-T holds Active product status with 919 pieces in current inventory, making it suitable for both replacement and new design applications.

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