PI6C2408-3WE Equivalent & Substitute Parts

Part Overview

The PI6C2408-3WE 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	PI6C2408-3WE
Manufacturer	Diodes Incorporated
Product Category	Clock/Timing - Zero Delay Buffer
Package Type	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Maximum Frequency	140MHz
Input/Output Ratio	1:8
Input Logic Level	TTL
Output Logic Level	TTL
Supply Voltage Range	3V to 3.6V
Operating Temperature	0°C to 70°C
PLL Configuration	Yes with Bypass
Number of Circuits	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the PI6C2408-3WE is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Package Type: 16-SOIC (0.154", 3.90mm Width) surface mount
Supply Voltage Range: 3V to 3.6V
Operating Temperature: 0°C to 70°C
PLL Configuration: Yes with Bypass
Number of Circuits: 1
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Factors:

Input/Output Logic Levels: TTL or LVTTL (compatible signal standards)
Input/Output Ratio: 1:8 or 1:9 (functionally equivalent buffer configurations)
Maximum Frequency: Equal to or greater than 140MHz

Renesas Electronics Corporation parts meeting these criteria are grouped as direct substitutes. The 2309-series and 2309A-series devices operate at 133MHz with 1:9 ratios and LVTTL logic, providing functional equivalence within the specified electrical and mechanical constraints. The 2308-2DCG offers multiplier capability at 133.3MHz with 1:8 ratio. The 23S08E-3DCG provides enhanced frequency performance at 200MHz with 1:8 ratio and dual output logic (CMOS/LVTTL).

Parameter Comparison

Parameter	PI6C2408-3WE	2308-2DCG	2309-1DCG / 2309-1DCG8	2309-1HDCG / 2309-1HDCG8	2309A-1DCG / 2309A-1DCG8	2309A-1HDCG / 2309A-1HDCG8	23S08E-3DCG
Manufacturer	Diodes Inc.	Renesas	Renesas	Renesas	Renesas	Renesas	Renesas
Type	Zero Delay Buffer	Multiplier, Zero Delay Buffer	Zero Delay Buffer	Zero Delay Buffer	Zero Delay Buffer	Zero Delay Buffer	Clock Multiplier, Zero Delay Buffer
Max Frequency	140MHz	133.3MHz	133MHz	133MHz	133MHz	133MHz	200MHz
Input/Output Ratio	1:8	1:8	1:9	1:9	1:9	1:9	1:8
Input Logic	TTL	LVTTL	LVTTL	LVTTL	LVTTL	LVTTL	LVTTL
Output Logic	TTL	LVTTL	LVTTL	LVTTL	LVTTL	LVTTL	CMOS, LVTTL
Package	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Supply Voltage	3V to 3.6V	3V to 3.6V	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	0°C to 70°C	0°C to 70°C	0°C to 70°C	0°C to 70°C	0°C to 70°C	0°C to 70°C
PLL with Bypass	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Obsolete	Active	Active	Active	Active	Active
MSL Rating	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The 2309-1DCG, 2309-1DCG8, 2309-1HDCG, 2309-1HDCG8, 2309A-1DCG, 2309A-1DCG8, 2309A-1HDCG, and 2309A-1HDCG8 are active Renesas products providing direct functional substitution. All maintain identical supply voltage (3V to 3.6V), operating temperature (0°C to 70°C), package geometry (16-SOIC), and PLL bypass configuration. The 1:9 input-to-output ratio differs from the original 1:8, but both configurations operate as zero delay buffers with equivalent circuit topology. LVTTL logic compatibility with TTL-level systems is established through standard interface design. These parts are available in both tube (DCG/HDCG) and tape & reel (DCG8/HDCG8) packaging options.

Secondary Substitute (Obsolete Status):

The 2308-2DCG is an obsolete Renesas multiplier with zero delay buffer functionality, maintaining the original 1:8 input-to-output ratio at 133.3MHz. While product status is obsolete, it provides the closest frequency and ratio alignment to the PI6C2408-3WE.

Enhanced Performance Alternative:

The 23S08E-3DCG is an active Renesas clock multiplier offering superior frequency performance at 200MHz with 1:8 ratio and dual output logic (CMOS/LVTTL). This device is suitable for applications requiring higher clock frequencies within the same package and voltage specifications.

Packaging Considerations:

Tube packaging (DCG/HDCG variants) is appropriate for lower-volume applications and manual assembly. Tape & reel packaging (DCG8/HDCG8 variants) is specified for automated pick-and-place manufacturing. Moisture sensitivity level (MSL) rating of 3 (168 hours) for active Renesas substitutes requires controlled storage and handling compared to the original MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can the 2309-1DCG series directly replace the PI6C2408-3WE?

A: The 2309-1DCG series provides functional substitution within the specified electrical and mechanical parameters. Both operate at 3V to 3.6V supply, 0°C to 70°C temperature range, in 16-SOIC surface mount packages with PLL bypass capability. The 1:9 input-to-output ratio differs from the original 1:8, but both configurations perform zero delay buffer operation. LVTTL logic is compatible with TTL-level systems through standard interface design.

Q: What is the frequency difference between the PI6C2408-3WE and substitute parts?

A: The PI6C2408-3WE operates at 140MHz maximum. The 2309-series and 2309A-series substitutes operate at 133MHz, representing a 7MHz reduction. The 23S08E-3DCG operates at 200MHz, providing 60MHz additional headroom. Frequency selection depends on application timing requirements.

Q: Are there packaging format differences between substitute options?

A: All substitute parts maintain the 16-SOIC (0.154", 3.90mm Width) surface mount package. Packaging format variations include tube (DCG/HDCG) for manual assembly and tape & reel (DCG8/HDCG8) for automated manufacturing. The 2308-2DCG is supplied in tube format only.

Q: What is the significance of MSL rating differences?

A: The original PI6C2408-3WE has MSL 1 (unlimited moisture exposure tolerance). Active Renesas substitutes have MSL 3 (168-hour moisture exposure limit). This requires controlled storage in dry-pack containers and limits shelf life after opening. Manufacturing processes must account for bake-out procedures if moisture absorption occurs.

Q: Which substitute offers the best frequency performance?

A: The 23S08E-3DCG provides the highest maximum frequency at 200MHz, compared to 140MHz for the original and 133MHz for the 2309-series. This device also offers dual output logic (CMOS/LVTTL) for enhanced interface flexibility.

Q: Are all substitutes RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant, matching the original PI6C2408-3WE compliance status. REACH status is unaffected for all parts.

Q: What is the difference between 2309-1DCG and 2309A-1DCG variants?

A: Both 2309-1DCG and 2309A-1DCG series operate identically at 133MHz with 1:9 ratio, LVTTL logic, and identical electrical specifications. The designation difference reflects internal Renesas product line segmentation. Both are active products with equivalent substitution capability.

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