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7X-24.576MBA-T CMOS Oscillator Equivalent & Substitute Parts
Part Overview
The 7X-24.576MBA-T is an active crystal oscillator (XO) manufactured by TXC CORPORATION, operating at 24.576 MHz with CMOS output and 3.3V supply voltage. This component is classified as a Standard XO with Enable/Disable functionality, packaged in a 4-SMD, No Lead surface mount configuration. The part is Active status and RoHS Compliant, making it suitable for modern electronic applications requiring precise frequency generation.
Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this oscillator category, enabling direct replacement in circuit designs without functional degradation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Frequency | 24.576 MHz |
| Output Type | CMOS |
| Supply Voltage | 3.3V |
| Function | Enable/Disable |
| Operating Temperature Range | -10°C ~ 70°C |
| Frequency Stability | ±25ppm (Main Part) |
| Package Type | 4-SMD, No Lead |
| Mounting Type | Surface Mount |
| Physical Dimensions | 3.20mm L x 2.50mm W x 1.10mm H (Max) |
| Maximum Supply Current | 20mA |
| RoHS Compliance | RoHS Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 7X-24.576MBA-T is determined by strict alignment of the following critical parameters:
Mandatory Matching Parameters:
- Frequency: 24.576 MHz (exact match required)
- Output Type: CMOS
- Supply Voltage: 3.3V
- Function: Enable/Disable
- Package Type: 4-SMD, No Lead
- Physical Dimensions: 3.20mm x 2.50mm x 1.10mm (Max)
- Mounting Type: Surface Mount
- Operating Temperature Range: -10°C ~ 70°C
- Maximum Supply Current: 20mA
Allowable Variation Parameters:
- Frequency Stability: Tolerance specifications may vary within acceptable engineering margins for the application
- Inventory Status: Substitute availability does not affect electrical equivalence
The 7X-24.576MBB-T qualifies as a substitute part because it maintains identical values across all mandatory matching parameters. The difference in frequency stability (±50ppm versus ±25ppm) represents a relaxed tolerance specification and does not prevent substitution in applications where the main part's tighter tolerance is not explicitly required.
Parameter Comparison
| Parameter | 7X-24.576MBA-T (Main Part) | 7X-24.576MBB-T (Substitute) |
|---|---|---|
| Manufacturer | TXC CORPORATION | TXC CORPORATION |
| Series | 7X | 7X |
| Product Status | Active | Active |
| Frequency | 24.576 MHz | 24.576 MHz |
| Output Type | CMOS | CMOS |
| Supply Voltage | 3.3V | 3.3V |
| Function | Enable/Disable | Enable/Disable |
| Frequency Stability | ±25ppm | ±50ppm |
| Operating Temperature | -10°C ~ 70°C | -10°C ~ 70°C |
| Maximum Supply Current | 20mA | 20mA |
| Package Type | 4-SMD, No Lead | 4-SMD, No Lead |
| Physical Dimensions | 3.20mm x 2.50mm x 1.10mm (Max) | 3.20mm x 2.50mm x 1.10mm (Max) |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS Compliant | RoHS Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) | MSL 1 (Unlimited) |
| Packaging Format | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
7X-24.576MBA-T (Primary Selection)
Select this part when frequency stability of ±25ppm is required by circuit design specifications. Both the main part and substitute maintain Active product status with full RoHS compliance and MSL 1 rating, ensuring long-term availability and environmental regulatory adherence.
7X-24.576MBB-T (Substitute Selection)
This part is electrically and mechanically equivalent for applications where frequency stability tolerance of ±50ppm satisfies design requirements. The substitute maintains identical supply voltage, output type, package configuration, and thermal operating range. Both parts are manufactured by TXC CORPORATION within the same 7X series, ensuring consistent quality and reliability standards.
Selection between these parts depends solely on the frequency stability requirement specified in the circuit design. No additional testing or verification is required when substituting between these parts within their respective tolerance specifications.
Frequently Asked Questions (FAQ)
Q: Can 7X-24.576MBB-T replace 7X-24.576MBA-T in any application?
A: The 7X-24.576MBB-T is a direct substitute when the application does not require the tighter ±25ppm frequency stability of the main part. Both parts operate at identical frequency, voltage, current, temperature range, and package configuration. The substitution is valid if the circuit design specifies ±50ppm or looser frequency tolerance.
Q: What is the difference between these two parts?
A: The only electrical difference is frequency stability: 7X-24.576MBA-T provides ±25ppm, while 7X-24.576MBB-T provides ±50ppm. All other parameters—frequency, voltage, current, package, dimensions, and temperature range—are identical.
Q: Are both parts available in the same packaging format?
A: Yes. Both 7X-24.576MBA-T and 7X-24.576MBB-T are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. Physical dimensions and mounting type are identical.
Q: Do these parts have the same RoHS and compliance status?
A: Yes. Both parts are RoHS Compliant, REACH Unaffected, classified as EAR99, and carry the same HTSUS code (8542.39.0001). Moisture Sensitivity Level is MSL 1 (Unlimited) for both parts.
Q: Can I use 7X-24.576MBB-T if my design originally specified 7X-24.576MBA-T?
A: Substitution is valid only if your circuit design does not explicitly require the ±25ppm frequency stability of the main part. Review your frequency tolerance specifications before substituting. If your design specifies ±25ppm or tighter tolerance, use the main part 7X-24.576MBA-T.
Q: What is the maximum supply current for both parts?
A: Both parts have a maximum supply current of 20mA at 3.3V supply voltage. Current consumption in Disable mode is not specified in the provided data.
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