IDT2309-1DC8 Equivalent & Substitute Parts

Part Overview

The IDT2309-1DC8 is a Zero Delay Buffer IC manufactured by Renesas Electronics Corporation, designed for clock distribution and timing applications. This 16-SOIC package device operates at 133MHz with a 1:9 input-to-output ratio and integrates a PLL with bypass capability. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

IDT2309-1DC8

Renesas Electronics CorporationIn Stock: 698IDT2309-1DC8 Datasheet

Current PartRFQ

2309-1DCG8

Renesas Electronics CorporationIn Stock: 46982309-1DCG8 Datasheet

DirectRFQ

NB2309AI1DR2G

onsemiIn Stock: 1413NB2309AI1DR2G Datasheet

UpgradeRFQ

PL123-09HSC-R

Microchip TechnologyIn Stock: 821PL123-09HSC-R Datasheet

MFR RecommendedRFQ

PL123-09SC

Microchip TechnologyIn Stock: 736PL123-09SC Datasheet

MFR RecommendedRFQ

PL123-09SC-R

Microchip TechnologyIn Stock: 6867PL123-09SC-R Datasheet

MFR RecommendedRFQ

PL123-09SI

Microchip TechnologyIn Stock: 1009PL123-09SI Datasheet

MFR RecommendedRFQ

PL123-09SI-R

Microchip TechnologyIn Stock: 2747PL123-09SI-R Datasheet

MFR RecommendedRFQ

2309-1HDCG8

Renesas Electronics CorporationIn Stock: 17642309-1HDCG8 Datasheet

Parametric EquivalentRFQ

2309A-1DCG8

Renesas Electronics CorporationIn Stock: 10052309A-1DCG8 Datasheet

Parametric EquivalentRFQ

2309A-1HDCG8

Renesas Electronics CorporationIn Stock: 11542309A-1HDCG8 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IDT2309-1DC8 are qualified based on the following critical parameters:

Electrical Compatibility:

• Frequency range: 133MHz to 134MHz maximum
• Supply voltage: 3V to 3.6V
• Input/Output signal type: LVTTL or Clock-compatible logic levels
• Ratio configuration: 1:9 input-to-output
• PLL with bypass functionality

Mechanical Compatibility:

• Package type: 16-SOIC (0.154", 3.90mm Width)
• Surface mount mounting type
• Pin count and footprint equivalence

Regulatory & Compliance:

• RoHS3 compliance preferred for new designs
• REACH unaffected status maintained across all substitutes
• ECCN and HTSUS classifications consistent

Substitutes are categorized as direct manufacturer equivalents, manufacturer-recommended alternatives, and parametric equivalents based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Preferred for Renesas-based designs): The 2309-1DCG8 is the primary direct equivalent from Renesas Electronics Corporation. It maintains identical electrical specifications (133MHz, 1:9 ratio, 3V-3.6V supply) and mechanical compatibility (16-SOIC package). The part is active with ROHS3 compliance, addressing the RoHS non-compliance limitation of the obsolete IDT2309-1DC8. Inventory availability is substantial at 4632 units.

Extended Temperature Range Alternative (Renesas): The 2309-1HDCG8 and 2309A-1HDCG8 variants provide identical electrical performance with active product status and ROHS3 compliance. These are suitable for designs requiring the Renesas platform with standard operating temperature range (0°C to 70°C).

Manufacturer-Recommended Alternatives (Microchip PL123 Series): The Microchip PL123-09SC-R, PL123-09SC, PL123-09HSC-R, PL123-09SI, and PL123-09SI-R parts provide functional equivalence with slightly elevated frequency capability (134MHz vs. 133MHz). All are active products with ROHS3 compliance. The PL123-09SC-R offers the highest inventory (6849 units) and is supplied in Tape & Reel packaging. The PL123-09SI and PL123-09SI-R variants support extended operating temperature (-40°C to 85°C), suitable for industrial applications.

onsemi Alternative (Extended Temperature): The NB2309AI1DR2G from onsemi provides equivalent electrical functionality with extended operating temperature range (-40°C to 85°C). Although classified as obsolete, it offers ROHS3 compliance and represents a cross-manufacturer option for temperature-critical applications.

Packaging Considerations: Tape & Reel (TR) packaging is preferred for production environments. Tube packaging is suitable for lower-volume or prototype applications. The "-R" suffix denotes Tape & Reel packaging in Microchip part numbers.

Frequently Asked Questions (FAQ)

Q: Can I directly replace IDT2309-1DC8 with 2309-1DCG8? A: Yes. The 2309-1DCG8 is a direct manufacturer equivalent with identical electrical specifications and mechanical compatibility. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between PL123-09SC and PL123-09SC-R? A: Both parts are electrically identical. The "-R" suffix indicates Tape & Reel packaging, while PL123-09SC is supplied in Tube packaging. Select based on production volume and assembly requirements.

Q: Are Microchip PL123 parts fully compatible with the IDT2309-1DC8? A: Yes, within the specified electrical parameters. All PL123 variants maintain the 1:9 ratio, 3V-3.6V supply voltage, and 16-SOIC package. The maximum frequency is 134MHz compared to 133MHz, which is within acceptable tolerance for clock distribution applications.

Q: Which substitute should I use for industrial temperature applications? A: The PL123-09SI, PL123-09SI-R, or NB2309AI1DR2G support extended operating temperature range (-40°C to 85°C). These are suitable for industrial environments requiring wider temperature tolerance.

Q: Is RoHS compliance mandatory for my design? A: RoHS3 compliance is required for products sold in regulated markets. All active substitute parts listed (2309-1DCG8, PL123 series, 2309A variants, 2309-1HDCG8) are ROHS3 compliant. The original IDT2309-1DC8 is non-compliant and should be replaced in new designs.

Q: What is the difference between LVTTL and Clock input/output specifications? A: Both specifications indicate compatible logic levels for this application. LVTTL (Low Voltage TTL) and Clock-type outputs are functionally equivalent for zero delay buffer applications operating at 133-134MHz.

Q: Can I mix packaging types in production? A: Packaging type (Tube vs. Tape & Reel) affects assembly process and inventory management but does not impact electrical or mechanical compatibility. Select based on your production assembly equipment and volume requirements.