7W-1.544MBD-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7W-1.544MBD-T is a 1.544 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION, designed for applications requiring a crystal-based frequency reference with enable/disable functionality. This component operates at 3.3V supply voltage and is housed in a 4-SMD, No Lead surface mount package.

The 7W-1.544MBD-T is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support long-term product support for legacy systems utilizing this oscillator.

Substiute Parts

7W-1.544MBD-T

TXC CORPORATIONIn Stock: 9217W-1.544MBD-T Datasheet

Current PartRFQ

510CBA1M54400AAGR

Skyworks Solutions Inc.In Stock: 805510CBA1M54400AAGR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7W-1.544MBD-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 1.544 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: 0.276" L x 0.197" W (7.00mm x 5.00mm)
• Mounting Type: Surface Mount
• Base Resonator: Crystal

The substitute part 510CBA1M54400AAGR (Skyworks Solutions Inc.) meets all mandatory matching parameters and is classified as Active product status, providing improved supply chain availability compared to the obsolete 7W-1.544MBD-T.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 510CBA1M54400AAGR (Skyworks Solutions Inc.)

The 510CBA1M54400AAGR is the direct substitute for the obsolete 7W-1.544MBD-T. Selection of this substitute is based on the following engineering criteria:

Product Status: The substitute part is classified as Active, ensuring ongoing availability and manufacturer support, whereas the original part is Obsolete.

Compliance & Certifications: Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence for export and trade purposes.

Electrical Equivalence: All critical electrical parameters match exactly: frequency (1.544 MHz), output type (CMOS), supply voltage (3.3V), enable/disable function, frequency stability (±25ppm), and operating temperature range (-40°C ~ 85°C).

Physical Compatibility: Package type, dimensions (7.00mm x 5.00mm), and mounting type (Surface Mount, 4-SMD No Lead) are identical, enabling direct PCB layout compatibility.

Noted Differences: The substitute part exhibits a maximum supply current of 26mA compared to 20mA for the original part, and a maximum seated height of 0.071" (1.80mm) compared to 0.056" (1.42mm). These differences do not preclude substitution in standard applications but should be evaluated in designs with strict current budgets or height constraints.

Frequently Asked Questions (FAQ)

Q: Can the 510CBA1M54400AAGR be used as a direct replacement for the 7W-1.544MBD-T?

A: Yes. The 510CBA1M54400AAGR meets all mandatory electrical and mechanical parameters required for direct substitution. Identical frequency (1.544 MHz), output type (CMOS), supply voltage (3.3V), enable/disable function, frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), and package dimensions (7.00mm x 5.00mm) enable direct PCB compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (TXC vs. Skyworks), product status (Obsolete vs. Active), maximum supply current (20mA vs. 26mA), and maximum seated height (1.42mm vs. 1.80mm). The substitute part provides improved supply chain availability due to Active status.

Q: Are there any compliance or regulatory differences?

A: No. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence.

Q: Does the higher maximum supply current of the substitute part affect circuit design?

A: The substitute part's maximum supply current specification (26mA) is higher than the original (20mA). In applications with strict power budgets, actual operating current should be evaluated. The higher specification does not prevent substitution but indicates different design or measurement conditions.

Q: Is the increased seated height of the substitute part a concern?

A: The substitute part has a maximum seated height of 0.071" (1.80mm) compared to 0.056" (1.42mm) for the original. In designs with height constraints (such as low-profile assemblies), this difference should be evaluated against available clearance.

Q: What is the packaging format of the substitute part?

A: The 510CBA1M54400AAGR is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.

Q: Are both parts RoHS compliant?

A: The 7W-1.544MBD-T is confirmed RoHS Compliant. RoHS status for the 510CBA1M54400AAGR is not specified in the provided data.