ASD-8.000MHZ-LCS-T Equivalent & Substitute Parts

Part Overview

The ASD-8.000MHZ-LCS-T is an 8 MHz XO (Standard) HCMOS oscillator manufactured by Abracon LLC. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality and is housed in a 4-SMD, No Lead package. The device is actively produced and widely used in applications requiring stable 8 MHz frequency generation with low power consumption capabilities.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical operating parameters. The ASD-8.000MHZ-LCS-T has one parametric equivalent available from an alternative manufacturer.

Key Parameters

Parameter	Value	Significance for Substitution
Frequency	8.000 MHz	Core functional requirement; must match exactly
Output Type	HCMOS	Determines signal compatibility with receiving circuits
Supply Voltage	3.3V	Critical for power supply compatibility
Function	Enable/Disable	Operational control capability requirement
Frequency Stability	±50ppm	Defines timing accuracy tolerance
Operating Temperature Range	-40°C ~ 85°C	Environmental operating limits
Package / Case	4-SMD, No Lead	Physical footprint and mounting compatibility
Size / Dimension	0.098" L x 0.079" W (2.50mm x 2.00mm)	PCB layout and placement constraints
Height - Seated (Max)	0.039" (1.00mm)	Clearance and assembly compatibility
Mounting Type	Surface Mount	Assembly process compatibility
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance

Substitute Part Grouping Explanation

Substitution eligibility for the ASD-8.000MHZ-LCS-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Frequency: 8.000 MHz (exact match required)
Output Type: HCMOS
Supply Voltage: 3.3V
Function: Enable/Disable capability
Frequency Stability: ±50ppm
Operating Temperature Range: -40°C ~ 85°C
Package / Case: 4-SMD, No Lead
Physical Dimensions: 0.098" L x 0.079" W (2.50mm x 2.00mm)
Height - Seated (Max): 0.039" (1.00mm)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

The LFSPXO072801 from IQD Frequency Products meets all mandatory matching parameters and qualifies as a parametric equivalent. Both devices are active products with identical electrical specifications and mechanical compatibility.

Parameter Comparison

Parameter	ASD-8.000MHZ-LCS-T (Abracon LLC)	LFSPXO072801 (IQD Frequency Products)	Match Status
Frequency	8.000 MHz	8.000 MHz	Equivalent
Output Type	HCMOS	HCMOS	Equivalent
Supply Voltage	3.3V	3.3V	Equivalent
Function	Enable/Disable	Enable/Disable	Equivalent
Frequency Stability	±50ppm	±50ppm	Equivalent
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Current - Supply (Max)	5mA	10mA	Compatible (substitute draws higher current)
Package / Case	4-SMD, No Lead	4-SMD, No Lead	Equivalent
Size / Dimension	0.098" L x 0.079" W (2.50mm x 2.00mm)	0.098" L x 0.079" W (2.50mm x 2.00mm)	Equivalent
Height - Seated (Max)	0.039" (1.00mm)	0.039" (1.00mm)	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Active	Active	Both actively manufactured

Engineering Selection Recommendations

Both the ASD-8.000MHZ-LCS-T and LFSPXO072801 are active products with full ROHS3 compliance, making either suitable for new designs and production applications.

ASD-8.000MHZ-LCS-T (Abracon LLC):

Lower maximum supply current (5mA vs. 10mA)
Preferred for power-constrained applications
Current inventory: 1,072 pieces

LFSPXO072801 (IQD Frequency Products):

Higher maximum supply current specification (10mA)
Supplied in Tape & Reel packaging format
Current inventory: 9,946 pieces
REACH Affected status (vs. REACH Unaffected for Abracon part)

Selection between these parts should be based on supply chain availability, packaging requirements (Tape & Reel vs. standard SMD), power budget constraints, and regulatory compliance documentation needs. Both devices deliver identical electrical performance and mechanical compatibility for the specified 8 MHz HCMOS oscillator application.

Frequently Asked Questions (FAQ)

Q: Can the LFSPXO072801 directly replace the ASD-8.000MHZ-LCS-T on existing PCBs?

A: Yes. Both devices share identical package dimensions (0.098" L x 0.079" W, 2.50mm x 2.00mm), height (0.039" / 1.00mm maximum), and 4-SMD, No Lead footprint. No PCB layout modifications are required.

Q: What is the difference in current consumption between these parts?

A: The ASD-8.000MHZ-LCS-T specifies a maximum supply current of 5mA, while the LFSPXO072801 specifies 10mA maximum. Both operate at 3.3V. Applications with strict power budgets should account for this difference in system-level power calculations.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both devices operate across the -40°C to 85°C temperature range, meeting industrial and extended commercial temperature requirements.

Q: What packaging formats are available?

A: The ASD-8.000MHZ-LCS-T is available in standard SMD packaging. The LFSPXO072801 is supplied in Tape & Reel (TR) format, which is standard for high-volume automated assembly operations.

Q: Do both parts meet the same regulatory compliance standards?

A: Both are ROHS3 compliant. The ASD-8.000MHZ-LCS-T is REACH Unaffected, while the LFSPXO072801 is REACH Affected. Applications subject to REACH regulations should verify compliance requirements with the respective manufacturer documentation.

Q: Is the frequency stability identical between these parts?

A: Yes. Both devices specify ±50ppm frequency stability across the operating temperature range, ensuring equivalent timing accuracy for applications requiring this specification.

Q: Can either part be used in designs requiring enable/disable functionality?

A: Yes. Both the ASD-8.000MHZ-LCS-T and LFSPXO072801 include enable/disable control functionality, allowing dynamic power management in the application circuit.

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