ICS502M Clock Generator IC Equivalent & Substitute Parts

Part Overview

The ICS502M is a Clock Generator IC manufactured by Renesas Electronics Corporation, operating at a maximum frequency of 190MHz in an 8-SOIC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The ICS502M features a Phase-Locked Loop (PLL) with clock and crystal input capabilities, delivering CMOS output signals suitable for timing and synchronization applications in embedded systems and digital electronics.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICS502M
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	Clock Generator
Frequency - Max	190MHz
Package / Case	8-SOIC (0.154", 3.90mm Width)
Voltage - Supply	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C
PLL	Yes
Input	Clock, Crystal
Output	CMOS
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the ICS502M are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — identical physical footprint required for PCB compatibility
Frequency - Max: 190MHz — minimum frequency specification must match or exceed
Voltage - Supply: 3V ~ 5.5V — operating voltage range must encompass the original specification
PLL: Yes — Phase-Locked Loop functionality must be present
Input: Clock, Crystal — input signal types must be supported
Mounting Type: Surface Mount — identical mounting technology

Substitute Categories:

Direct Substitute (502MLF): Identical electrical and functional specifications to ICS502M with improved RoHS3 compliance. Packaging differs (Tube vs. standard), but electrical performance is equivalent.
Upgrade Substitutes (NB3N502DG, NB3N502DR2G): onsemi PLL Clock Multiplier ICs offering enhanced capabilities including extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C), active product status, and RoHS3 compliance. Both parts maintain the same 8-SOIC package and 190MHz frequency specification. Output includes both CMOS and TTL options, providing greater design flexibility.

Parameter Comparison

Parameter	ICS502M	502MLF	NB3N502DG	NB3N502DR2G
Manufacturer	Renesas	Renesas	onsemi	onsemi
Type	Clock Generator	Clock Generator	PLL Clock Multiplier	PLL Clock Multiplier
Frequency - Max	190MHz	190MHz	190MHz	190MHz
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Voltage - Supply	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C
PLL	Yes	Yes	Yes with Bypass	Yes with Bypass
Input	Clock, Crystal	Clock, Crystal	Clock, Crystal	Clock, Crystal
Output	CMOS	CMOS	CMOS, TTL	CMOS, TTL
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Standard	Tube	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Changes: Select 502MLF when maintaining the original Renesas platform is preferred. This part provides identical electrical specifications and functional performance to the ICS502M while offering improved RoHS3 compliance. The Tube packaging is suitable for standard production workflows.

For Long-Term Design Continuity: Select NB3N502DG or NB3N502DR2G (onsemi equivalents) for new designs or production transitions. Both parts are active products with extended support lifecycles, eliminating future obsolescence concerns. The extended operating temperature range (-40°C ~ 85°C) accommodates industrial and automotive applications beyond the original ICS502M specification. RoHS3 compliance ensures regulatory alignment with current environmental standards.

Packaging Consideration: NB3N502DR2G is supplied in Tape & Reel format, optimized for high-volume automated assembly. NB3N502DG is supplied in Tube format, suitable for lower-volume or manual assembly processes.

Frequently Asked Questions (FAQ)

Q: Can NB3N502DG or NB3N502DR2G be used as direct pin-for-pin replacements for ICS502M? A: Yes. Both onsemi parts maintain the identical 8-SOIC package footprint and pinout compatibility. No PCB modifications are required for physical substitution.

Q: What is the difference between NB3N502DG and NB3N502DR2G? A: Both parts are electrically identical. The difference is packaging: NB3N502DG is supplied in Tube format, while NB3N502DR2G is supplied in Tape & Reel (TR) format. Select based on your assembly process requirements.

Q: Does the extended operating temperature range of the onsemi parts affect circuit design? A: No. The onsemi parts (-40°C ~ 85°C) are a superset of the ICS502M specification (0°C ~ 70°C). Designs validated for the original part will function within the onsemi operating range without modification.

Q: Are the onsemi NB3N502 parts backward compatible with existing firmware or software? A: Yes. The NB3N502 series maintains the same clock generation and PLL functionality as the ICS502M. No firmware or software changes are required.

Q: Why do the onsemi parts list both CMOS and TTL output options? A: The NB3N502 series supports both output types, providing design flexibility. The ICS502M supports CMOS output only. Designs using CMOS output will function identically on the onsemi parts.

Q: Is 502MLF a better choice than the onsemi alternatives? A: 502MLF is functionally equivalent to ICS502M but remains an obsolete product. For new designs or long-term production, the active onsemi parts (NB3N502DG or NB3N502DR2G) are recommended to avoid future supply and support discontinuation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message