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PI6C2408-3WEX Equivalent & Substitute Parts
Part Overview
The PI6C2408-3WEX is a Zero Delay Buffer IC manufactured by Diodes Incorporated, designed for clock distribution and timing applications. This 16-SOIC surface mount device operates at a maximum frequency of 140MHz with a 1:8 input-to-output ratio and integrated PLL with bypass capability. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with the 16-SOIC package, 3V to 3.6V supply voltage range, and surface mount assembly requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Part Number | PI6C2408-3WEX |
| Manufacturer | Diodes Incorporated |
| Product Category | Clock/Timing - Zero Delay Buffer IC |
| Package Type | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Maximum Frequency | 140MHz |
| Input/Output Ratio | 1:8 |
| Input Type | TTL |
| Output Type | TTL |
| Supply Voltage Range | 3V to 3.6V |
| Operating Temperature | 0°C to 70°C |
| PLL Configuration | Yes with Bypass |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the PI6C2408-3WEX is determined by the following critical parameters:
Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) surface mount package to ensure PCB footprint compatibility without redesign.
Electrical Specifications: Supply voltage range (3V to 3.6V) and operating temperature range must be maintained or exceeded. The maximum frequency specification must meet or exceed the original 140MHz requirement for functional equivalence.
Functional Architecture: Zero Delay Buffer IC classification with integrated PLL and bypass capability is required. Input and output signal types (TTL/LVTTL) must be compatible with existing circuit designs.
Compliance Requirements: RoHS3 compliance is mandatory for current production. Moisture Sensitivity Level (MSL) ratings determine handling and storage requirements during assembly.
Substitute parts are grouped into two categories: Renesas Electronics Corporation 2309 series variants (active product status with extended temperature range) and onsemi NB2308AC4DG (manufacturer-recommended alternative with matching operating temperature range).
Parameter Comparison
| Parameter | PI6C2408-3WEX | 2309-1DCGI / 2309-1DCGI8 | 2309-1HDCGI / 2309-1HDCGI8 | 2309A-1DCGI / 2309A-1DCGI8 | NB2308AC4DG |
|---|---|---|---|---|---|
| Manufacturer | Diodes Incorporated | Renesas Electronics | Renesas Electronics | Renesas Electronics | onsemi |
| Product Status | Obsolete | Active | Active | Active | Active |
| Package Type | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Maximum Frequency | 140MHz | 133MHz | 133MHz | 133MHz | 133.3MHz |
| Input/Output Ratio | 1:8 | 1:9 | 1:9 | 1:9 | 1:8 |
| Input Type | TTL | LVTTL | LVTTL | LVTTL | Clock |
| Output Type | TTL | LVTTL | LVTTL | LVTTL | Clock |
| Supply Voltage Range | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V | 3V to 3.6V |
| Operating Temperature | 0°C to 70°C | -40°C to 85°C | -40°C to 85°C | -40°C to 85°C | 0°C to 70°C |
| PLL Configuration | Yes with Bypass | Yes with Bypass | Yes with Bypass | Yes with Bypass | Yes with Bypass |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) | 3 (168 Hours) | 1 (Unlimited) |
Engineering Selection Recommendations
For Active Production with Extended Temperature Requirements: The Renesas Electronics 2309 series (2309-1DCGI, 2309-1DCGI8, 2309-1HDCGI, 2309-1HDCGI8, 2309A-1DCGI, 2309A-1DCGI8) provides active product status with extended operating temperature range (-40°C to 85°C). These parts are suitable for applications requiring wider temperature operation. Packaging options include Tube and Tape & Reel (TR) configurations. MSL rating of 3 (168 Hours) requires controlled storage and handling during assembly operations.
For Operating Temperature Matching: The onsemi NB2308AC4DG maintains the original operating temperature range (0°C to 70°C) and MSL rating of 1 (Unlimited), eliminating moisture sensitivity handling constraints. This part is designated as manufacturer-recommended and provides direct functional equivalence with the original PI6C2408-3WEX in terms of thermal and environmental specifications.
Frequency and Ratio Considerations: The PI6C2408-3WEX operates at 140MHz with 1:8 ratio. Renesas 2309 series parts operate at 133MHz with 1:9 ratio. The onsemi NB2308AC4DG operates at 133.3MHz with 1:8 ratio, providing closer frequency and ratio alignment with the original part.
Compliance and Availability: All substitute parts maintain ROHS3 compliance. Current inventory levels support production requirements across all substitute options.
Frequently Asked Questions (FAQ)
Q: Can the Renesas 2309 series parts directly replace the PI6C2408-3WEX without circuit modification?
A: The 16-SOIC package footprint is identical, enabling direct PCB placement. However, the input/output ratio differs (1:9 versus 1:8), and input/output signal types are LVTTL instead of TTL. Circuit-level compatibility depends on whether the downstream logic accepts LVTTL signal levels and the 1:9 output configuration. Extended operating temperature range (-40°C to 85°C) exceeds the original specification.
Q: What is the significance of the MSL rating difference between PI6C2408-3WEX and substitute parts?
A: The original PI6C2408-3WEX has MSL 1 (Unlimited), meaning no moisture absorption constraints during storage. Renesas 2309 series parts have MSL 3 (168 Hours), requiring that components be used within 168 hours of package opening in standard humidity conditions. The onsemi NB2308AC4DG maintains MSL 1 (Unlimited), matching the original handling requirements.
Q: Which substitute part provides the closest electrical match to the original PI6C2408-3WEX?
A: The onsemi NB2308AC4DG provides the closest match, maintaining the 1:8 input/output ratio, 133.3MHz maximum frequency (within 4.8% of original 140MHz), identical operating temperature range (0°C to 70°C), and MSL 1 rating. This part is designated as manufacturer-recommended.
Q: Are packaging options (Tube versus Tape & Reel) interchangeable?
A: Tube and Tape & Reel packaging contain identical components with different presentation formats for assembly automation. Tape & Reel (TR) packaging is optimized for high-volume automated pick-and-place assembly, while Tube packaging is suitable for lower-volume or manual assembly operations. Electrical and functional specifications are identical between packaging variants of the same part number.
Q: What is the difference between 2309-1DCGI and 2309A-1DCGI variants?
A: Both variants are manufactured by Renesas Electronics with identical electrical specifications, package type, and operating parameters. The base product numbers differ (2309-1 versus 2309A), indicating different product lines within the Renesas portfolio. Functional equivalence is maintained across both variants.
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