Renesas Electronics 601M-01LF Clock/Frequency Synthesizer Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 601M-01LF is a Clock/Frequency Synthesizer and Clock Generator IC designed for timing and synchronization applications. This 16-SOIC surface mount device operates at a maximum frequency of 156MHz and supports supply voltages from 3V to 5.5V. The device features an integrated Phase-Locked Loop (PLL) with bypass capability and accepts clock or crystal inputs while providing CMOS outputs.

The 601M-01LF is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for legacy systems or new designs requiring similar functionality.

Substiute Parts

601M-01LF

Renesas Electronics CorporationIn Stock: 1153601M-01LF Datasheet

Current PartRFQ

5P35023B-000NLGI

Renesas Electronics CorporationIn Stock: 9755P35023B-000NLGI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 601M-01LF are identified based on functional equivalence within the Clock/Timing category. The primary substitution criteria are:

Core Functional Parameters:

• Clock/Frequency Synthesizer or Clock Generator functionality
• Integrated PLL with bypass capability
• Support for clock or crystal inputs
• CMOS or compatible output types
• Surface mount packaging

Electrical Compatibility Considerations:

• Maximum frequency capability at or above 156MHz
• Supply voltage range compatibility or overlap with 3V ~ 5.5V
• Operating temperature range suitable for the application environment
• Single circuit configuration

Mechanical Compatibility:

• Surface mount technology
• Package footprint and pinout differences require PCB layout evaluation

The 5P35023B-000NLGI qualifies as a substitute based on its Clock Generator functionality, integrated PLL with bypass, compatible input types (LVCMOS, Crystal), and surface mount configuration. However, differences in package type, frequency capability, and supply voltage specifications require careful application assessment.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The 601M-01LF is classified as obsolete, while the 5P35023B-000NLGI is active. Active product status ensures ongoing manufacturer support, availability, and compliance with current regulatory requirements.

Compliance and Certifications: Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The 5P35023B-000NLGI carries MSL 1 (Unlimited) compared to the 601M-01LF's MSL 3 (168 Hours), indicating superior moisture handling characteristics for storage and assembly processes.

Functional Capability: The 5P35023B-000NLGI provides higher maximum frequency (500MHz versus 156MHz) and extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), offering greater design margin for demanding applications.

Design Integration Factors: Package differences (16-SOIC versus 24-VFQFN) require PCB layout redesign. Supply voltage specifications differ; the 5P35023B-000NLGI operates at lower voltage levels with multiple supply options. Output types expand from CMOS-only to include LP-HCSL, LVCMOS, LVDS, and LVPECL, providing greater interface flexibility.

Selection of the 5P35023B-000NLGI as a substitute requires validation of package compatibility, supply voltage availability in the target system, and output signal type requirements.

Frequently Asked Questions (FAQ)

Q: Can the 5P35023B-000NLGI directly replace the 601M-01LF without PCB modifications?

A: No. The parts use different packages (16-SOIC versus 24-VFQFN), requiring PCB layout redesign. Pinout and footprint differences necessitate schematic and layout updates.

Q: Are the supply voltage ranges compatible between these parts?

A: Partial compatibility exists. The 601M-01LF operates at 3V ~ 5.5V. The 5P35023B-000NLGI offers three supply ranges: 1.71V ~ 1.89V, 2.375V ~ 2.625V, and 3.135V ~ 3.465V. The 3.135V ~ 3.465V range overlaps with the 601M-01LF specification, but the 5V supply point of the original part falls outside the substitute's rated range.

Q: What are the key differences in output signal types?

A: The 601M-01LF provides CMOS outputs only. The 5P35023B-000NLGI supports LP-HCSL, LVCMOS, LVDS, and LVPECL outputs, offering greater signal interface options for different system requirements.

Q: Does the 5P35023B-000NLGI support the same input types?

A: Both parts accept crystal inputs. The 601M-01LF accepts Clock or Crystal inputs. The 5P35023B-000NLGI accepts LVCMOS or Crystal inputs, providing compatible but slightly different input specifications.

Q: What is the significance of the MSL rating difference?

A: The 601M-01LF carries MSL 3 (168 Hours), limiting moisture exposure during storage and assembly. The 5P35023B-000NLGI carries MSL 1 (Unlimited), allowing indefinite storage without moisture bake-out requirements, reducing manufacturing process constraints.

Q: Is the higher maximum frequency of the 5P35023B-000NLGI (500MHz versus 156MHz) a concern?

A: Higher maximum frequency capability does not create incompatibility. The substitute can operate at or below the original part's frequency specifications. Verify that the substitute's programmability or configuration supports the required output frequency for your application.

Q: What operating temperature range should be considered for system design?

A: The 601M-01LF operates 0°C ~ 70°C. The 5P35023B-000NLGI operates -40°C ~ 85°C. If the application requires operation below 0°C or above 70°C, the substitute provides extended capability. If the application is limited to 0°C ~ 70°C, both parts are suitable within that range.