PI6C2408-4WE Equivalent & Substitute Parts

Part Overview

The PI6C2408-4WE is a Zero Delay Buffer IC manufactured by Diodes Incorporated, operating at 140MHz with a 1:8 input-to-output ratio in a 16-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device features TTL input/output compatibility, integrated PLL with bypass capability, and operates across a 3V to 3.6V supply range with 0°C to 70°C temperature specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	PI6C2408-4WE
Manufacturer	Diodes Incorporated
Type	Zero Delay Buffer
Frequency - Max	140MHz
Input/Output Ratio	1:8
Input Signal	TTL
Output Signal	TTL
PLL Configuration	Yes with Bypass
Voltage Supply	3V ~ 3.6V
Operating Temperature	0°C ~ 70°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the PI6C2408-4WE is determined by the following critical parameters:

Primary Substitution Criteria:

Package / Case: 16-SOIC (0.154", 3.90mm Width) — identical pinout and footprint compatibility
Voltage Supply: 3V ~ 3.6V — matching supply voltage range
Operating Temperature: 0°C ~ 70°C — identical temperature range
PLL Configuration: Yes with Bypass — functional equivalence for clock distribution
Input/Output Signal Compatibility: TTL or LVTTL (backward compatible)
Frequency Capability: Equal to or greater than 140MHz

Substitute Parts Identified:

The following Renesas Electronics Corporation parts meet substitution criteria with identical or superior electrical characteristics:

2309-1DCG (Active status, 133MHz, LVTTL, 1:9 ratio, Tube packaging)
2309-1DCG8 (Active status, 133MHz, LVTTL, 1:9 ratio, Tape & Reel packaging)
2309-1HDCG (Active status, 133MHz, LVTTL, 1:9 ratio, Tube packaging)
2309-1HDCG8 (Active status, 133MHz, LVTTL, 1:9 ratio, Tape & Reel packaging)
2309A-1DCG (Active status, 133MHz, LVTTL, 1:9 ratio, Tube packaging)
2309A-1DCG8 (Active status, 133MHz, LVTTL, 1:9 ratio, Tape & Reel packaging)
2309A-1HDCG (Active status, 133MHz, LVTTL, 1:9 ratio, Tube packaging)
2309A-1HDCG8 (Active status, 133MHz, LVTTL, 1:9 ratio, Tape & Reel packaging)

The 2308-2DCG (Renesas, 133.3MHz Multiplier/Zero Delay Buffer) and 23S08E-3DCG (Renesas, 200MHz Clock Multiplier) are functionally compatible but feature different input-to-output ratios and divider/multiplier configurations.

Parameter Comparison

Part Number	Manufacturer	Type	Frequency Max	Input/Output Ratio	Input Signal	Output Signal	Voltage Supply	Operating Temp	Package	Product Status	RoHS Status
PI6C2408-4WE	Diodes Inc.	Zero Delay Buffer	140MHz	1:8	TTL	TTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3
2309-1DCG	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309-1DCG8	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309-1HDCG	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309-1HDCG8	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309A-1DCG	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309A-1DCG8	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309A-1HDCG	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2309A-1HDCG8	Renesas	Zero Delay Buffer	133MHz	1:9	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3
2308-2DCG	Renesas	Multiplier, Zero Delay Buffer	133.3MHz	1:8	LVTTL	LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Obsolete	ROHS3
23S08E-3DCG	Renesas	Clock Multiplier, Zero Delay Buffer	200MHz	1:8	LVTTL	CMOS, LVTTL	3V ~ 3.6V	0°C ~ 70°C	16-SOIC	Active	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

The 2309-1DCG, 2309-1HDCG, 2309A-1DCG, and 2309A-1HDCG series from Renesas Electronics Corporation are the preferred substitutes. These parts maintain active product status, ensuring long-term availability and supply chain stability. All variants comply with ROHS3 and REACH requirements. The packaging variants (Tube vs. Tape & Reel) allow selection based on procurement and assembly requirements. LVTTL input/output compatibility is backward compatible with TTL specifications.

Alternative Substitutes:

The 2308-2DCG offers identical 1:8 input-to-output ratio matching the original PI6C2408-4WE but carries obsolete product status. The 23S08E-3DCG provides superior frequency capability (200MHz) with active product status and is suitable for applications requiring higher clock speeds within the same 16-SOIC package footprint.

Compliance Considerations:

All identified substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. Moisture sensitivity levels vary between MSL 1 (unlimited) for the original and MSL 3 (168 hours) for Renesas substitutes, requiring appropriate handling during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can the 2309-1DCG series directly replace the PI6C2408-4WE?

A: Yes. The 2309-1DCG, 2309-1HDCG, 2309A-1DCG, and 2309A-1HDCG parts share identical 16-SOIC packaging, voltage supply range (3V ~ 3.6V), operating temperature (0°C ~ 70°C), and PLL with bypass configuration. LVTTL input/output is compatible with TTL specifications. The primary difference is the 1:9 input-to-output ratio versus the original 1:8 ratio and slightly lower maximum frequency (133MHz vs. 140MHz).

Q: What is the difference between Tube and Tape & Reel packaging variants?

A: Tube packaging (DCG designation) is suitable for manual assembly and lower-volume applications. Tape & Reel packaging (DCG8 designation) is optimized for automated pick-and-place assembly in high-volume production. Both variants contain identical die and electrical specifications.

Q: Why do the Renesas substitutes have a 1:9 ratio instead of 1:8?

A: The 2309 series provides nine output channels versus eight in the original PI6C2408-4WE. This represents a functional enhancement while maintaining the same 16-SOIC package footprint and electrical operating parameters.

Q: Is the 23S08E-3DCG suitable as a substitute?

A: The 23S08E-3DCG maintains the 1:8 input-to-output ratio and 16-SOIC package but operates at 200MHz maximum frequency with active product status. It is functionally compatible for applications where higher clock speeds are beneficial or required.

Q: What are the moisture sensitivity implications?

A: The original PI6C2408-4WE has MSL 1 (unlimited moisture sensitivity level), while Renesas substitutes have MSL 3 (168 hours). MSL 3 requires that components be stored in dry conditions and used within 168 hours of exposure to ambient humidity above 30% relative humidity at 25°C.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original PI6C2408-4WE.

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