ASML-27.000MHZ-L-C-T Equivalent & Substitute Parts

Part Overview

The ASML-27.000MHZ-L-C-T is a 27 MHz XO (Standard) HCMOS oscillator manufactured by Abracon LLC, designed for applications requiring a 3.3V enable/disable crystal oscillator in a 4-SOJ surface mount package. This part is classified as obsolete, necessitating identification of active equivalent components that maintain functional and mechanical compatibility for ongoing production and field replacement requirements.

Substiute Parts

ASML-27.000MHZ-L-C-T

Abracon LLCIn Stock: 1028ASML-27.000MHZ-L-C-T Datasheet

Current PartRFQ

ECS-8FA3X-270-TR

ECS Inc.In Stock: 1618ECS-8FA3X-270-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASML-27.000MHZ-L-C-T is determined by the following critical parameters:

• Frequency: 27 MHz (exact match required)
• Package / Case: 4-SOJ, 5.08mm pitch (mechanical compatibility)
• Supply Voltage: 3.3V (electrical compatibility)
• Function: Enable/Disable capability (functional requirement)
• Operating Temperature Range: -40°C ~ 85°C (environmental specification)
• Mounting Type: Surface Mount (assembly compatibility)

The ECS-8FA3X-270-TR qualifies as a substitute based on matching all critical parameters. Output type variation from HCMOS to CMOS is permissible within the 3.3V logic family, as both are compatible with standard digital interfaces at this voltage level.

Parameter Comparison

Engineering Selection Recommendations

The ECS-8FA3X-270-TR is the recommended substitute for the obsolete ASML-27.000MHZ-L-C-T based on the following factors:

• Active product status ensures long-term availability and supply chain continuity
• Full compliance with ROHS3 and REACH requirements matches the original part
• Identical package, pitch, and mounting specifications enable direct PCB compatibility without layout modifications
• Matching operating temperature range and supply voltage maintain system performance envelope
• Lower maximum supply current (9mA vs 35mA) provides improved power efficiency
• Frequency stability specification of ±200ppm remains within acceptable tolerance for standard 27 MHz oscillator applications

The frequency stability difference (±50ppm vs ±200ppm) should be evaluated against specific application timing requirements. Applications with stringent frequency accuracy demands may require additional assessment.

Frequently Asked Questions (FAQ)

Q: Can the ECS-8FA3X-270-TR be used as a direct replacement without PCB modifications?

A: Yes. Both parts share identical package specifications (4-SOJ, 5.08mm pitch), footprint dimensions, and pin configuration. No PCB layout changes are required for mechanical or electrical compatibility.

Q: What is the difference between HCMOS and CMOS output at 3.3V?

A: Both HCMOS and CMOS are compatible logic families at 3.3V supply voltage. The output voltage levels and drive characteristics are suitable for standard digital interfaces in this voltage class. The ECS-8FA3X-270-TR CMOS output is functionally compatible with circuits designed for the ASML-27.000MHZ-L-C-T HCMOS output.

Q: Why does the substitute have a wider frequency stability specification?

A: The ECS-8FA3X-270-TR specifies ±200ppm frequency stability compared to ±50ppm for the original part. This wider tolerance reflects different manufacturing processes between manufacturers. Applications requiring the tighter ±50ppm specification should evaluate whether the ±200ppm tolerance meets system timing requirements.

Q: Is the lower supply current of the substitute part a concern?

A: No. The ECS-8FA3X-270-TR maximum supply current of 9mA is lower than the ASML-27.000MHZ-L-C-T specification of 35mA. This represents improved efficiency and does not indicate reduced functionality. Circuits designed for the original part will operate correctly with the substitute.

Q: Are there any moisture sensitivity or storage differences?

A: Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are identical.

Q: What is the inventory status for the substitute part?

A: The ECS-8FA3X-270-TR is in active production with 1562 pieces available in new original stock, ensuring reliable supply for production and field replacement applications.