MK2304S-2 Zero Delay Buffer IC Equivalent & Substitute Parts

Part Overview

The MK2304S-2 is a Zero Delay Buffer IC manufactured by Renesas Electronics Corporation, designed for clock distribution and timing applications. This device features a 133MHz maximum frequency with 1:4 input-to-output ratio, integrated PLL functionality, and operates on 3V to 3.6V supply voltage in an 8-SOIC surface mount package.

The MK2304S-2 is classified as obsolete. Identifying qualified substitute parts is essential for design continuity, procurement planning, and long-term product support when original inventory becomes unavailable.

Substiute Parts

MK2304S-2

Renesas Electronics CorporationIn Stock: 783MK2304S-2 Datasheet

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NB2304AI1DR2G

onsemiIn Stock: 2297NB2304AI1DR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MK2304S-2 is determined by the following critical parameters:

• Package compatibility: 8-SOIC (0.154", 3.90mm Width) form factor
• Frequency capability: Minimum 133MHz maximum frequency
• Input/Output ratio: 1:4 configuration
• Supply voltage range: 3V to 3.6V operation
• PLL functionality: Integrated phase-locked loop required
• Number of circuits: Single circuit configuration
• Mounting type: Surface mount technology

The NB2304AI1DR2G from onsemi meets all substitution criteria within these allowed parameters.

Parameter Comparison

Engineering Selection Recommendations

The NB2304AI1DR2G qualifies as a direct substitute for the MK2304S-2 based on electrical and mechanical parameter alignment. Key considerations for selection:

Compliance Status: The NB2304AI1DR2G carries ROHS3 compliance, whereas the MK2304S-2 is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the onsemi part provides regulatory advantage.

Operating Temperature Range: The NB2304AI1DR2G supports -40°C to 85°C operation, exceeding the MK2304S-2 range of 0°C to 70°C. This extended range accommodates wider industrial and automotive temperature environments.

Frequency Performance: The NB2304AI1DR2G delivers 133.3MHz maximum frequency, marginally exceeding the MK2304S-2 specification of 133MHz, ensuring compatibility with existing timing requirements.

Package and Pinout: Both devices utilize identical 8-SOIC packaging, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the NB2304AI1DR2G replace the MK2304S-2 in existing designs?

A: Yes. Both devices share identical package geometry (8-SOIC), supply voltage range (3V to 3.6V), input/output ratio (1:4), and PLL functionality. Electrical and mechanical compatibility is confirmed across all critical parameters.

Q: What is the difference in operating temperature range?

A: The MK2304S-2 operates from 0°C to 70°C, while the NB2304AI1DR2G operates from -40°C to 85°C. The onsemi part supports extended temperature operation suitable for industrial and automotive applications. For designs operating within 0°C to 70°C, both parts are functionally equivalent.

Q: Does the RoHS compliance difference affect substitution?

A: The NB2304AI1DR2G is ROHS3 compliant, while the MK2304S-2 is non-compliant. For new designs or applications subject to RoHS regulations, the onsemi substitute provides regulatory compliance. Existing designs using the Renesas part may continue operation without modification.

Q: Are the frequency specifications compatible?

A: Yes. The NB2304AI1DR2G maximum frequency of 133.3MHz exceeds the MK2304S-2 specification of 133MHz, ensuring full compatibility with timing requirements designed for the original part.

Q: Is PCB layout modification required for substitution?

A: No. Both devices use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout and footprint. Direct component replacement on existing PCBs is possible without layout changes.