TC-64.000MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-64.000MBD-T is a 64 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output and includes Enable/Disable functionality. The device is packaged in a 4-SMD, No Lead configuration with dimensions of 3.20mm × 2.50mm and a maximum seated height of 0.80mm.

The TC-64.000MBD-T carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this oscillator specification.

Substiute Parts

TC-64.000MBD-T

TXC CORPORATIONIn Stock: 707TC-64.000MBD-T Datasheet

Current PartRFQ

7X-64.000MBD-T

TXC CORPORATIONIn Stock: 9257X-64.000MBD-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-64.000MBD-T is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 64 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Package Type: 4-SMD, No Lead (exact match required)
• Dimensions: 3.20mm × 2.50mm (exact match required)
• Moisture Sensitivity Level: MSL 1 (exact match required)

Allowable Variation Parameters:

• Base Resonator Type: MEMS or Crystal technology acceptable
• Current Supply (Max): Substitute may be lower than original specification
• Maximum Seated Height: Substitute may be higher if PCB layout permits
• Product Status: Active status preferred for long-term availability

The 7X-64.000MBD-T qualifies as a direct substitute based on matching all mandatory parameters while offering improved supply availability and active product status.

Parameter Comparison

Engineering Selection Recommendations

7X-64.000MBD-T as Primary Substitute:

The 7X-64.000MBD-T is a direct functional equivalent to the TC-64.000MBD-T. Both components share identical electrical specifications across all critical parameters: 64 MHz frequency, CMOS output, 3.3V supply, Enable/Disable function, ±25ppm frequency stability, and -40°C to 85°C operating temperature range.

The 7X-64.000MBD-T offers the following advantages:

• Active Product Status: The substitute maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Reduced Power Consumption: Maximum supply current is 15mA compared to 30mA in the original part, resulting in lower power dissipation.
• Regulatory Compliance: The substitute is certified RoHS Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.
• Identical Packaging: Both parts use 4-SMD, No Lead packaging with matching footprints (3.20mm × 2.50mm).

Height Consideration:

The 7X-64.000MBD-T has a maximum seated height of 1.10mm compared to 0.80mm for the TC-64.000MBD-T. This 0.30mm height difference must be verified against PCB layout constraints and clearance requirements in the target application. In most standard PCB designs with adequate component spacing, this height variation is accommodated without modification.

Base Resonator Technology:

The TC-64.000MBD-T uses MEMS resonator technology, while the 7X-64.000MBD-T uses crystal resonator technology. Both technologies deliver identical frequency stability (±25ppm) and operating characteristics within the specified parameters. The substitution is valid from an electrical and mechanical compatibility standpoint.

Frequently Asked Questions (FAQ)

Q: Can the 7X-64.000MBD-T directly replace the TC-64.000MBD-T without PCB modifications?

A: Yes, the 7X-64.000MBD-T is a direct pin-compatible replacement. Both parts use identical 4-SMD, No Lead packaging with matching 3.20mm × 2.50mm footprints. No PCB layout changes are required. However, verify that the 0.30mm additional height (1.10mm vs. 0.80mm) does not conflict with component clearances or enclosure constraints in your specific application.

Q: What is the difference between MEMS and crystal resonator technology in these oscillators?

A: The TC-64.000MBD-T uses MEMS (Micro-Electro-Mechanical Systems) resonator technology, while the 7X-64.000MBD-T uses crystal resonator technology. Both technologies deliver identical electrical performance within the specified parameters: 64 MHz frequency, ±25ppm stability, and CMOS output. The choice between technologies does not affect functional compatibility or electrical characteristics in this application.

Q: Why is the 7X-64.000MBD-T consuming less current (15mA max vs. 30mA max)?

A: The maximum supply current specification reflects the design characteristics of each oscillator architecture. The 7X-64.000MBD-T's lower maximum current consumption (15mA) provides a power efficiency advantage while maintaining identical frequency stability and output specifications. This reduced current draw does not indicate reduced performance; it represents improved power efficiency in the substitute design.

Q: Is the 0.30mm height difference significant for my application?

A: The 0.30mm height difference (1.10mm for 7X-64.000MBD-T vs. 0.80mm for TC-64.000MBD-T) must be evaluated against your specific PCB layout and enclosure design. Standard PCB designs with typical component spacing accommodate this variation without modification. If your application has height-critical constraints (such as low-profile enclosures or dense component packing), verify clearance before implementation.

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

A: The 7X-64.000MBD-T is certified RoHS Compliant and REACH Unaffected. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. The substitute meets current environmental and regulatory requirements, making it suitable for applications requiring RoHS or REACH compliance.

Q: Can I use the 7X-64.000MBD-T in new designs, or is it only for replacement applications?

A: The 7X-64.000MBD-T is suitable for both replacement applications and new designs. Its Active product status ensures long-term availability and supply chain stability, making it the preferred choice for ongoing production and future development.

Q: What is the Moisture Sensitivity Level (MSL) for both parts?

A: Both the TC-64.000MBD-T and 7X-64.000MBD-T carry MSL 1 (Unlimited) rating. This classification indicates the lowest moisture sensitivity level, meaning these components have unlimited shelf life under normal storage conditions and do not require special moisture control measures during handling or storage.