Equivalent & Substitute Parts for Renesas 23S09-1DCGI8

Part Overview

The Renesas 23S09-1DCGI8 is a Zero Delay Buffer IC operating at 133MHz maximum frequency, designed for clock distribution and timing applications. This device features a 1:9 input-to-output ratio with LVTTL input and dual output capability (CMOS/LVTTL). The part is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

23S09-1DCGI8

Renesas Electronics CorporationIn Stock: 90923S09-1DCGI8 Datasheet

Current PartRFQ

8T49N240-998NLGI8

Renesas Electronics CorporationIn Stock: 9078T49N240-998NLGI8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Renesas 8T49N240-998NLGI8 serves as a functional alternative to the 23S09-1DCGI8 based on the following substitution criteria:

Common Functional Parameters:

• Manufacturer: Renesas Electronics Corporation (same source)
• Category: Clock/Timing (identical application domain)
• PLL Architecture: Both devices include PLL with bypass capability
• Operating Temperature Range: -40°C ~ 85°C (identical)
• RoHS3 Compliance: Both meet ROHS3 requirements
• MSL Rating: 3 (168 Hours) for both devices
• Surface Mount Technology: Both use surface mount packaging

Substitution Basis: The 8T49N240-998NLGI8 is a higher-performance jitter attenuator that encompasses the zero delay buffer functionality of the 23S09-1DCGI8. While the substitute operates at 867MHz (significantly higher than the 133MHz maximum of the original), it maintains backward compatibility through its configurable input/output architecture and extended voltage supply range (1.71V ~ 3.465V), which encompasses the original device's 3V ~ 3.6V specification.

Parameter Comparison

Engineering Selection Recommendations

The 8T49N240-998NLGI8 is the recommended substitute for the obsolete 23S09-1DCGI8 based on the following engineering criteria:

Product Status Alignment: The substitute is classified as Active, ensuring long-term availability and continued manufacturer support, whereas the original part is obsolete.

Compliance Certification: Both devices maintain ROHS3 compliance and identical MSL ratings, ensuring compatibility with current manufacturing and storage requirements.

Functional Capability: The substitute's jitter attenuator architecture provides enhanced performance characteristics while maintaining the core zero delay buffer functionality required by the original application. The 867MHz maximum frequency specification exceeds the original 133MHz requirement, providing operational margin for timing-critical applications.

Supply Voltage Compatibility: The substitute's extended supply voltage range (1.71V ~ 3.465V) encompasses the original device's 3V ~ 3.6V specification, ensuring direct voltage compatibility in existing designs.

Package Consideration: The substitute uses a 40-VFQFN package versus the original 16-SOIC package. PCB layout redesign is required for physical integration.

Frequently Asked Questions (FAQ)

Q: Can the 8T49N240-998NLGI8 directly replace the 23S09-1DCGI8 without design modifications?

A: Functional substitution is possible; however, physical integration requires PCB redesign due to different package types (40-VFQFN versus 16-SOIC). Pin configuration and signal routing must be re-evaluated according to the substitute device's datasheet.

Q: What is the primary reason for substitution?

A: The original 23S09-1DCGI8 is classified as obsolete. The 8T49N240-998NLGI8 is an active product from the same manufacturer with equivalent or superior performance characteristics.

Q: Are there voltage supply compatibility concerns?

A: No. The substitute's supply voltage range (1.71V ~ 3.465V) fully encompasses the original device's 3V ~ 3.6V specification, ensuring direct compatibility in existing power delivery designs.

Q: How do the frequency specifications compare?

A: The original device operates at a maximum of 133MHz, while the substitute operates at 867MHz. The substitute's higher frequency capability provides operational margin and is suitable for applications requiring the original device's 133MHz specification.

Q: What compliance certifications apply to both devices?

A: Both devices are ROHS3 compliant with identical MSL ratings of 3 (168 Hours), ensuring compatibility with current manufacturing and storage protocols.

Q: Are there input/output configuration differences?

A: The original device provides LVTTL input with CMOS/LVTTL output. The substitute provides configurable input options (LVCMOS, LVDS, LVHSTL, LVPECL, Crystal) with output options (HCSL, LVCMOS, LVDS, LVPECL). Application-specific configuration is required during implementation.