Equivalent & Substitute Parts for Renesas 670M-01ILF Zero Delay Buffer IC

Part Overview

The Renesas 670M-01ILF is a Zero Delay Buffer IC operating at 160MHz maximum frequency in a 16-SOIC surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part provides 1:1 input-to-output clock buffering with CMOS output and integrated PLL functionality, designed for applications requiring low-jitter clock distribution across 3V to 5.5V supply ranges.

Substiute Parts

670M-01ILF

Renesas Electronics CorporationIn Stock: 3197670M-01ILF Datasheet

Current PartRFQ

5P35023B-000NLGI

Renesas Electronics CorporationIn Stock: 9755P35023B-000NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Renesas 5P35023B-000NLGI qualifies as a functional substitute based on the following alignment of critical electrical and mechanical parameters:

Substitution Criteria:

• Manufacturer continuity: Both parts manufactured by Renesas Electronics Corporation
• PLL functionality: Both devices include integrated PLL with bypass capability
• Operating temperature range: Identical -40°C to 85°C specification
• Supply voltage compatibility: 5P35023B supports 3.135V ~ 3.465V range, overlapping with 670M-01ILF 3V ~ 5.5V range
• RoHS and regulatory compliance: Both ROHS3 compliant and EAR99 classified
• Surface mount technology: Both use surface mount packaging for PCB integration

The 5P35023B represents an enhanced alternative with extended frequency capability (500MHz vs 160MHz) and advanced output format options (LP-HCSL, LVCMOS, LVDS, LVPECL vs CMOS-only), providing design flexibility for clock distribution applications.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 670M-01ILF and 5P35023B-000NLGI depends on application-specific requirements and design constraints:

For 670M-01ILF Retention: Applications operating at frequencies below 160MHz with existing 16-SOIC footprint designs may continue using remaining inventory. Verify supply voltage requirements remain within 3V to 5.5V range and confirm MSL 3 handling procedures are maintained during assembly.

For 5P35023B-000NLGI Migration: New designs and production transitions should adopt the 5P35023B due to active product status, superior frequency headroom (500MHz), improved MSL rating (1 vs 3), and extended output format compatibility. PCB layout modifications are required to accommodate 24-VFQFN package geometry. Supply voltage selection must be constrained to the overlapping 3.135V ~ 3.465V range for direct substitution.

Both parts maintain identical operating temperature specifications and regulatory compliance certifications, ensuring thermal and environmental performance parity.

Frequently Asked Questions (FAQ)

Q: Can the 5P35023B-000NLGI directly replace the 670M-01ILF on existing PCBs?

A: Direct PCB replacement is not possible due to package differences. The 670M-01ILF uses 16-SOIC (0.154", 3.90mm width) while the 5P35023B uses 24-VFQFN (4x4). PCB redesign with updated footprint, trace routing, and decoupling capacitor placement is required.

Q: What supply voltage should be used when substituting with the 5P35023B?

A: The overlapping supply voltage range between both parts is 3.135V ~ 3.465V. Designs currently operating the 670M-01ILF at 5V must be re-evaluated and adjusted to operate within this narrower range for the 5P35023B.

Q: Are there functional differences in clock output between these parts?

A: The 670M-01ILF provides CMOS output only. The 5P35023B offers multiple output formats including LP-HCSL, LVCMOS, LVDS, and LVPECL. Output format selection on the 5P35023B must be configured to match the CMOS input requirements of downstream components.

Q: What is the impact of MSL rating differences?

A: The 670M-01ILF carries MSL 3 (168-hour floor life) while the 5P35023B carries MSL 1 (unlimited floor life). The 5P35023B provides greater flexibility in manufacturing and storage without time-sensitive bake-out procedures.

Q: Do both parts support the same frequency range?

A: No. The 670M-01ILF operates to 160MHz maximum, while the 5P35023B operates to 500MHz maximum. Applications requiring frequencies above 160MHz can only be addressed with the 5P35023B.

Q: Are there input type differences between these parts?

A: Yes. The 670M-01ILF accepts Clock input only. The 5P35023B accepts LVCMOS, Crystal, and Clock inputs, providing greater design flexibility for different clock source configurations.