Renesas Electronics 511MLF Clock Generator IC - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 511MLF is a Clock Generator IC operating at 200MHz maximum frequency in an 8-SOIC surface mount package. This device features a Phase-Locked Loop (PLL) with 1:1 input-to-output ratio, accepting clock or crystal inputs and providing CMOS outputs. The 511MLF is classified as obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	511MLF Value
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	Clock Generator
Frequency - Max	200MHz
PLL	Yes
Input Type	Clock, Crystal
Output Type	CMOS
Ratio - Input:Output	1:1
Voltage - Supply	3.135V ~ 5.25V
Operating Temperature	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 511MLF requires evaluation against the following critical parameters that define functional equivalence:

Core Functional Parameters:

Clock Generator type with integrated PLL
Maximum frequency capability of 200MHz or greater
Supply voltage compatibility within or overlapping the 3.135V ~ 5.25V range
CMOS output capability
Surface mount packaging

Compatibility Constraints:

Input type must support Clock or Crystal inputs
Operating temperature range must encompass or exceed 0°C ~ 70°C
RoHS3 compliance required for regulatory alignment
Package form factor must be compatible with existing PCB layouts or acceptable for redesign

The 9FGV1006C001LTGI qualifies as a manufacturer-recommended substitute based on these parameters. While it employs a different package format (16-TFLGA versus 8-SOIC) and offers extended functionality, it maintains core clock generation capability, PLL integration, and overlapping supply voltage specifications.

Parameter Comparison

Parameter	511MLF	9FGV1006C001LTGI	Compatibility Notes
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Same manufacturer
Category	Clock/Timing	Clock/Timing	Identical category
Type	Clock Generator	Clock Generator	Identical type
Frequency - Max	200MHz	200MHz, 325MHz	Substitute supports 200MHz minimum requirement
PLL	Yes	Yes	Both include PLL
Input Type	Clock, Crystal	HCSL, LVCMOS, LVDS, Crystal	Substitute supports all 511MLF input types plus additional options
Output Type	CMOS	CML, HCSL, LP-HCSL, LVCMOS, LVDS, LVPECL	Substitute supports CMOS output plus additional options
Voltage - Supply	3.135V ~ 5.25V	1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V	Overlapping range at 3.135V ~ 3.465V
Operating Temperature	0°C ~ 70°C	-40°C ~ 85°C	Substitute range encompasses 511MLF range
Package / Case	8-SOIC (0.154", 3.90mm Width)	16-TFLGA Exposed Pad (3x3)	Different package; PCB redesign required
Mounting Type	Surface Mount	Surface Mount	Both surface mount
Product Status	Obsolete	Active	Substitute is actively manufactured
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Both compliant
MSL Rating	1 (Unlimited)	3 (168 Hours)	Substitute has standard MSL rating

Engineering Selection Recommendations

For Direct Functional Replacement:

The 9FGV1006C001LTGI serves as the manufacturer-recommended substitute for the obsolete 511MLF. Selection of this device is justified by:

Active product status ensuring long-term availability and manufacturing support
Identical clock generator classification with integrated PLL functionality
Frequency capability meeting or exceeding the 200MHz requirement
Supply voltage overlap at 3.135V ~ 3.465V range supporting existing power distribution designs
CMOS output support maintaining signal compatibility with downstream logic
ROHS3 compliance alignment with regulatory requirements
Extended operating temperature range (-40°C ~ 85°C) providing margin beyond the 511MLF specification

Package Consideration:

The transition from 8-SOIC to 16-TFLGA package requires PCB layout modification. The 16-TFLGA format provides additional I/O capability and improved thermal characteristics through the exposed pad design.

Supply Voltage Design Constraint:

Applications operating at supply voltages above 3.465V (within the 511MLF range of 3.135V ~ 5.25V) require voltage regulation or alternative substitute selection. The 9FGV1006C001LTGI supports lower voltage rails (1.71V ~ 1.89V and 2.375V ~ 2.625V) but the primary overlap occurs at 3.135V ~ 3.465V.

Frequently Asked Questions (FAQ)

Q: Can the 9FGV1006C001LTGI directly replace the 511MLF without PCB modification?

A: No. The 9FGV1006C001LTGI uses a 16-TFLGA package versus the 511MLF 8-SOIC package. PCB layout redesign is required. Pin assignments and signal routing must be re-evaluated for the new package footprint.

Q: What is the primary reason the 511MLF requires substitution?

A: The 511MLF is classified as obsolete product status. Renesas Electronics no longer manufactures this device. The 9FGV1006C001LTGI is the active, manufacturer-recommended alternative.

Q: Are the input and output signal types compatible between these devices?

A: The 9FGV1006C001LTGI supports all input types of the 511MLF (Clock, Crystal) and all output types (CMOS). The substitute offers additional input and output options (HCSL, LVCMOS, LVDS, CML, LVPECL) but these are not required for functional equivalence.

Q: What supply voltage should be used for the 9FGV1006C001LTGI in a 511MLF replacement application?

A: Use the overlapping voltage range of 3.135V ~ 3.465V. This range is supported by both devices. If the original design operated at voltages above 3.465V, voltage regulation or alternative device selection is necessary.

Q: Does the 9FGV1006C001LTGI support the same frequency range as the 511MLF?

A: Yes. The 9FGV1006C001LTGI supports 200MHz operation, meeting the 511MLF maximum frequency specification. The device also supports operation at 325MHz for applications requiring higher frequency output.

Q: What is the difference in moisture sensitivity between these devices?

A: The 511MLF has MSL 1 (Unlimited) rating, while the 9FGV1006C001LTGI has MSL 3 (168 Hours) rating. The substitute requires standard moisture control procedures during storage and handling, with a 168-hour floor life after package opening.

Q: Are both devices RoHS compliant?

A: Yes. Both the 511MLF and 9FGV1006C001LTGI are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

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