TC-14.7456MBD-T Equivalent & Substitute Parts

Part Overview

The TC-14.7456MBD-T is a 14.7456 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 compatible substitute components essential for ongoing system support and procurement.

Substiute Parts

TC-14.7456MBD-T

TXC CORPORATIONIn Stock: 931TC-14.7456MBD-T Datasheet

Current PartRFQ

7X-14.7456MBD-T

TXC CORPORATIONIn Stock: 8147X-14.7456MBD-T Datasheet

DirectRFQ

ASE-14.7456MHZ-LR-T

Abracon LLCIn Stock: 748ASE-14.7456MHZ-LR-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-14.7456MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 14.7456 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 4-SMD, No Lead
• Package Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: MSL 1

Both identified substitute parts meet all mandatory matching parameters. The primary distinction between substitutes lies in base resonator technology (Crystal vs. MEMS), current consumption specifications, and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

7X-14.7456MBD-T (TXC CORPORATION): This substitute maintains the same manufacturer lineage as the obsolete TC-14.7456MBD-T. It is classified as Active product status, ensuring long-term availability and supply chain continuity. The 7X series uses Crystal-based resonator technology instead of MEMS, resulting in reduced maximum supply current (15mA vs. 25mA). The component is RoHS Compliant and REACH Unaffected. Height-seated dimension increases from 0.80mm to 1.10mm; verify PCB clearance in space-constrained applications.

ASE-14.7456MHZ-LR-T (Abracon LLC): This substitute offers the lowest power consumption profile with maximum supply current of 7mA and specified disable current of 10µA, providing advantages in battery-powered or low-power applications. Product status is Active with ROHS3 Compliance and REACH Unaffected certification. The Crystal-based resonator technology differs from the MEMS base of the main part. Height-seated dimension is 1.20mm; verify PCB clearance requirements. This part is cross-referenced in the original TC-14.7456MBD-T documentation as an approved substitute.

Both substitutes are electrically and mechanically compatible with the TC-14.7456MBD-T across all mandatory parameters. Selection between them depends on power consumption requirements, PCB height constraints, and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the 7X-14.7456MBD-T and ASE-14.7456MHZ-LR-T be used interchangeably with the TC-14.7456MBD-T?

A: Yes. Both substitutes meet all mandatory electrical and mechanical parameters: identical frequency (14.7456 MHz), output type (CMOS), supply voltage (3.3V), function (Enable/Disable), frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), package type (4-SMD, No Lead), and package dimensions (3.20mm x 2.50mm). Interchangeability is confirmed at the functional level.

Q: What is the primary difference between the substitute parts?

A: The 7X-14.7456MBD-T and ASE-14.7456MHZ-LR-T differ in current consumption and height-seated dimensions. The ASE variant consumes significantly less power (7mA maximum vs. 15mA) and includes specified disable current (10µA). The 7X variant has a lower seated height (1.10mm vs. 1.20mm). Both use Crystal-based resonators, differing from the MEMS technology in the obsolete TC part.

Q: Are there PCB layout considerations when substituting these parts?

A: Yes. The substitute parts have increased height-seated dimensions compared to the TC-14.7456MBD-T (0.80mm original vs. 1.10mm for 7X and 1.20mm for ASE). Verify clearance above the component location on the PCB. The footprint and pad layout remain identical due to matching package dimensions (3.20mm x 2.50mm).

Q: Do the substitutes have different compliance certifications?

A: The 7X-14.7456MBD-T is RoHS Compliant and REACH Unaffected. The ASE-14.7456MHZ-LR-T is ROHS3 Compliant and REACH Unaffected. Both meet current regulatory requirements. The original TC-14.7456MBD-T compliance status is not specified in available documentation.

Q: Which substitute is recommended for power-sensitive applications?

A: The ASE-14.7456MHZ-LR-T is the appropriate choice for power-constrained designs, offering maximum supply current of 7mA and specified disable current of 10µA, compared to 15mA for the 7X variant.

Q: Is the MEMS vs. Crystal resonator difference significant for substitution?

A: Both MEMS and Crystal resonators meet the specified frequency stability requirement of ±25ppm and all other electrical parameters. The resonator technology difference does not affect functional compatibility. Selection may depend on application-specific environmental or reliability requirements not specified in the provided parameters.