DSC1121AI2-012.2880 MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The DSC1121AI2-012.2880 is a 12.288 MHz MEMS-based XO (Standard) oscillator manufactured by Microchip Technology. This component operates as a CMOS output device with supply voltage range of 2.25V to 3.6V and includes Enable/Disable functionality. The part is currently in Active product status with 677 units available in inventory. Alternative components may be required due to supply constraints, lead time considerations, or specific application requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	DSC1121AI2-012.2880
Manufacturer	Microchip Technology
Series	DSC1121
Base Resonator	MEMS
Type	XO (Standard)
Frequency	12.288 MHz
Output	CMOS
Voltage - Supply	2.25V ~ 3.6V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature	-40°C ~ 85°C
Current - Supply (Max)	22mA
Mounting Type	Surface Mount
Package / Case	6-SMD, No Lead Exposed Pad
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max)	0.035" (0.90mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the DSC1121AI2-012.2880 is determined by strict alignment of the following critical parameters:

Frequency: 12.288 MHz (exact match required)
Output Type: CMOS
Supply Voltage Range: 2.25V ~ 3.6V (minimum requirement)
Function: Enable/Disable capability
Base Resonator: MEMS
Package / Case: 6-SMD, No Lead Exposed Pad
Physical Dimensions: 0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max): 0.035" (0.90mm)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C ~ 85°C (minimum requirement)
Compliance: ROHS3 Compliant, REACH Unaffected

The ASVMPC-12.288MHZ-LR-T from Abracon LLC meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Parameter	DSC1121AI2-012.2880 (Microchip)	ASVMPC-12.288MHZ-LR-T (Abracon)
Frequency	12.288 MHz	12.288 MHz
Output	CMOS	CMOS
Voltage - Supply	2.25V ~ 3.6V	2.25V ~ 3.6V
Function	Enable/Disable	Enable/Disable
Base Resonator	MEMS	MEMS
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	6-SMD, No Lead Exposed Pad	6-SMD, No Lead Exposed Pad
Size / Dimension	0.276" L x 0.197" W (7.00mm x 5.00mm)	0.276" L x 0.197" W (7.00mm x 5.00mm)
Height - Seated (Max)	0.035" (0.90mm)	0.035" (0.90mm)
Current - Supply (Max)	22mA	35mA
Current - Supply (Disable) (Max)	Not specified	22mA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both the DSC1121AI2-012.2880 and ASVMPC-12.288MHZ-LR-T are Active products with full ROHS3 compliance and REACH Unaffected status. Selection between these components should be based on:

Supply availability: DSC1121AI2-012.2880 has 677 units in stock; ASVMPC-12.288MHZ-LR-T has 783 units in stock
Current consumption: The DSC1121AI2-012.2880 operates at a maximum supply current of 22mA, while the ASVMPC-12.288MHZ-LR-T operates at 35mA maximum. Applications with strict power budget constraints should prioritize the Microchip component
Packaging format: The ASVMPC-12.288MHZ-LR-T is supplied in Tape & Reel (TR) format, which may be preferred for automated assembly processes
Regulatory compliance: Both components meet identical compliance requirements for industrial and commercial applications

Frequently Asked Questions (FAQ)

Q: Can the ASVMPC-12.288MHZ-LR-T be used as a direct replacement for the DSC1121AI2-012.2880?

A: Yes. Both components share identical frequency (12.288 MHz), output type (CMOS), supply voltage range (2.25V ~ 3.6V), package configuration (6-SMD, No Lead Exposed Pad), physical dimensions (7.00mm x 5.00mm), and operating temperature range (-40°C ~ 85°C). The primary difference is maximum supply current: 22mA versus 35mA respectively.

Q: What is the impact of the higher current consumption in the ASVMPC-12.288MHZ-LR-T?

A: The ASVMPC-12.288MHZ-LR-T draws a maximum of 35mA compared to 22mA for the DSC1121AI2-012.2880. Applications operating from battery or limited power supplies should account for this 13mA difference in power budget calculations. For standard AC-powered applications, this difference is typically negligible.

Q: Are there any package or PCB layout differences between these components?

A: No. Both components use identical 6-SMD, No Lead Exposed Pad packaging with matching physical dimensions (0.276" L x 0.197" W) and maximum seated height (0.035"). PCB footprints and assembly processes are interchangeable.

Q: Do both components support Enable/Disable functionality?

A: Yes. Both the DSC1121AI2-012.2880 and ASVMPC-12.288MHZ-LR-T include Enable/Disable function capability, allowing dynamic power management in circuit designs.

Q: What is the difference between the packaging formats listed?

A: The DSC1121AI2-012.2880 packaging format is not specified in the provided data. The ASVMPC-12.288MHZ-LR-T is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. Confirm packaging requirements with your procurement or assembly team.

Q: Are both components suitable for industrial temperature applications?

A: Yes. Both components operate across the -40°C ~ 85°C temperature range, meeting industrial application requirements. Both maintain ROHS3 compliance and REACH Unaffected status across this temperature range.

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