TC-65.000MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TC-65.000MBD-T is a 65 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable function, and is housed in a 4-SMD, No Lead package. The part is classified as Obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

The TC-65.000MBD-T serves applications requiring a stable 65 MHz clock signal with low power consumption and compact surface-mount form factor. Due to its obsolete status, direct replacements and functional equivalents are necessary for procurement and design continuity.

Substiute Parts

TC-65.000MBD-T

TXC CORPORATIONIn Stock: 815TC-65.000MBD-T Datasheet

Current PartRFQ

7X-65.000MBD-T

TXC CORPORATIONIn Stock: 7857X-65.000MBD-T Datasheet

DirectRFQ

ASEMPC-65.000MHZ-LR-T

Abracon LLCIn Stock: 871ASEMPC-65.000MHZ-LR-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-65.000MBD-T is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 65 MHz (exact match required)
• Output Type: CMOS
• Function: Enable/Disable capability
• Operating Temperature Range: -40°C ~ 85°C (minimum)
• Frequency Stability: ±25ppm (or better)
• Moisture Sensitivity Level: 1 (Unlimited)

Compatible Variation Parameters:

• Base Resonator Type: MEMS or Crystal (both acceptable for functional equivalence)
• Supply Voltage: 3.3V nominal (range compatibility acceptable if 3.3V is within specified range)
• Package Type: 4-SMD or 6-SMD, No Lead (both surface-mount, compatible footprints)
• Physical Dimensions: 3.20mm x 2.50mm (standard for this frequency class)
• Supply Current: Variation acceptable if within system power budget

Two substitute parts meet these criteria and are classified as follows:

Direct Manufacturer Substitute (Same Manufacturer): 7X-65.000MBD-T (TXC CORPORATION) - Crystal-based resonator variant, Active status

Similar Manufacturer Substitute (Alternative Manufacturer): ASEMPC-65.000MHZ-LR-T (Abracon LLC) - MEMS-based resonator, Active status, extended voltage range

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The 7X-65.000MBD-T is the primary substitute for the obsolete TC-65.000MBD-T. Both components are manufactured by TXC CORPORATION and share identical electrical specifications (65 MHz, ±25ppm stability, 3.3V supply, CMOS output, Enable/Disable function, -40°C ~ 85°C operating range). The 7X variant uses a Crystal-based resonator instead of MEMS but maintains functional equivalence. The 7X-65.000MBD-T is Active status, ensuring long-term availability. The primary design consideration is the increased seated height (1.10mm vs. 0.80mm) and reduced supply current (15mA vs. 30mA). The lower current consumption of the 7X variant is advantageous for power-constrained applications. Both components are RoHS Compliant and carry identical export classification (EAR99).

For Alternative Sourcing (Secondary Option):

The ASEMPC-65.000MHZ-LR-T from Abracon LLC provides an alternative source for 65 MHz CMOS oscillators with Enable/Disable function. This component maintains MEMS-based resonator technology matching the original TC-65.000MBD-T architecture. The ASEMPC variant offers an extended supply voltage range (2.25V ~ 3.6V) compared to the fixed 3.3V of the main part, providing greater design flexibility. The component is ROHS3 Compliant and Active status. Design considerations include the 6-SMD package (vs. 4-SMD) requiring PCB layout verification, slightly increased seated height (0.90mm), and higher maximum supply current (35mA). The ASEMPC variant specifies a disable-mode current of 26mA, providing additional power management data not available for the main part.

Selection Criteria:

• Preferred for pin-compatible replacement: 7X-65.000MBD-T
• Preferred for MEMS resonator continuity: ASEMPC-65.000MHZ-LR-T
• Preferred for lowest power consumption: 7X-65.000MBD-T
• Preferred for extended voltage range: ASEMPC-65.000MHZ-LR-T
• Preferred for compact height: TC-65.000MBD-T (original, if available) or ASEMPC-65.000MHZ-LR-T

Frequently Asked Questions (FAQ)

Q: Can the 7X-65.000MBD-T directly replace the TC-65.000MBD-T without PCB modifications?

A: The 7X-65.000MBD-T shares the same 4-SMD, No Lead package and 3.20mm x 2.50mm footprint as the TC-65.000MBD-T. However, the increased seated height (1.10mm vs. 0.80mm) must be verified against PCB clearance requirements. If vertical clearance is constrained, PCB layout review is necessary.

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

A: The TC-65.000MBD-T uses MEMS (Micro-Electro-Mechanical Systems) resonator technology, while the 7X-65.000MBD-T uses Crystal resonator technology. Both achieve identical frequency stability (±25ppm) and operating characteristics at 65 MHz. MEMS resonators typically offer lower power consumption and better shock/vibration resistance, while Crystal resonators are established technology with long operational history. For this application, both are functionally equivalent.

Q: Is the ASEMPC-65.000MHZ-LR-T compatible with 3.3V systems?

A: Yes. The ASEMPC-65.000MHZ-LR-T operates across a 2.25V ~ 3.6V supply range, which includes the 3.3V nominal voltage of the original TC-65.000MBD-T. The component is fully compatible with 3.3V systems.

Q: What is the impact of the 6-SMD package on the ASEMPC-65.000MHZ-LR-T?

A: The ASEMPC-65.000MHZ-LR-T uses a 6-SMD, No Lead package compared to the 4-SMD, No Lead package of the TC-65.000MBD-T. The physical footprint dimensions (3.20mm x 2.50mm) remain identical, but the pad configuration differs. PCB layout and reflow profile verification is required before implementation.

Q: Which substitute part has the lowest power consumption?

A: The 7X-65.000MBD-T has the lowest maximum supply current at 15mA, compared to 30mA for the TC-65.000MBD-T and 35mA for the ASEMPC-65.000MHZ-LR-T. The 7X variant is preferred for power-constrained applications.

Q: Are all three parts RoHS compliant?

A: The 7X-65.000MBD-T is RoHS Compliant. The ASEMPC-65.000MHZ-LR-T is ROHS3 Compliant. RoHS compliance status for the original TC-65.000MBD-T is not specified in the provided data.

Q: What is the frequency stability specification, and is it consistent across all parts?

A: All three components specify ±25ppm frequency stability across the -40°C ~ 85°C operating temperature range. This specification is identical and meets standard industrial oscillator requirements.

Q: Can these oscillators be used interchangeably in new designs?

A: Yes, all three components meet the same functional requirements (65 MHz, CMOS output, Enable/Disable, ±25ppm stability, -40°C ~ 85°C operation). Selection should be based on package compatibility, power budget, voltage range requirements, and long-term availability. The 7X-65.000MBD-T and ASEMPC-65.000MHZ-LR-T are both Active status and suitable for new designs.