ICS512MI Clock Generator IC Equivalent & Substitute Parts

Part Overview

The ICS512MI is a Clock Generator IC manufactured by Renesas Electronics Corporation, designed for 160MHz clock generation in 8-SOIC surface mount packaging. This part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. The ICS512MI features integrated PLL with bypass capability, supporting both clock and crystal inputs with CMOS output configuration.

Key Parameters

Parameter	Value
Manufacturer Part Number	ICS512MI
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	Clock Generator
Package / Case	8-SOIC (0.154", 3.90mm Width)
Frequency - Max	160MHz
Voltage - Supply	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
PLL	Yes with Bypass
Input	Clock, Crystal
Output	CMOS
Ratio - Input:Output	1:2
Number of Circuits	1
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the ICS512MI Clock Generator are identified based on the following critical parameters that determine functional equivalence:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — identical physical footprint required for direct PCB replacement
Voltage - Supply: 3V ~ 5.5V — compatible supply voltage range
Operating Temperature: -40°C ~ 85°C — matching thermal operating range
PLL with Bypass: Yes — required functional capability
Input: Clock, Crystal — compatible input signal types
Ratio - Input:Output: 1:2 — matching frequency multiplication ratio
Number of Circuits: 1 — single circuit configuration
Mounting Type: Surface Mount — consistent assembly method

The substitute parts NB3N502DG and NB3N502DR2G, manufactured by onsemi, meet all critical substitution criteria. Both parts are classified as PLL Clock Multiplier ICs with identical package geometry, supply voltage range, operating temperature specifications, and input/output ratio characteristics. The primary distinction between these substitutes is packaging format: NB3N502DG is supplied in Tube packaging, while NB3N502DR2G is supplied in Tape & Reel (TR) format.

Parameter Comparison

Parameter	ICS512MI	NB3N502DG	NB3N502DR2G
Manufacturer	Renesas Electronics Corporation	onsemi	onsemi
Type	Clock Generator	PLL Clock Multiplier	PLL Clock Multiplier
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Frequency - Max	160MHz	190MHz	190MHz
Voltage - Supply	3V ~ 5.5V	3V ~ 5.5V	3V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
PLL	Yes with Bypass	Yes with Bypass	Yes with Bypass
Input	Clock, Crystal	Clock, Crystal	Clock, Crystal
Output	CMOS	CMOS, TTL	CMOS, TTL
Ratio - Input:Output	1:2	1:2	1:2
Number of Circuits	1	1	1
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	-	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

Both NB3N502DG and NB3N502DR2G are functionally equivalent substitutes for the obsolete ICS512MI Clock Generator IC. Selection between these two onsemi alternatives should be based on procurement and assembly requirements:

NB3N502DG (Tube Packaging): Suitable for lower-volume applications, prototype development, and manual assembly processes where individual component handling is required.

NB3N502DR2G (Tape & Reel Packaging): Recommended for production-volume manufacturing, automated pick-and-place assembly, and high-throughput manufacturing environments.

Both substitute parts offer improved product status classification (Active vs. Obsolete) and enhanced regulatory compliance (ROHS3 Compliant vs. RoHS non-compliant). The substitute parts also provide higher maximum frequency capability (190MHz vs. 160MHz), offering additional performance headroom for clock generation applications. Output capability is expanded in the substitute parts to include both CMOS and TTL output options, compared to CMOS-only output in the original ICS512MI.

Frequently Asked Questions (FAQ)

Q: Can NB3N502DG or NB3N502DR2G be used as direct replacements for ICS512MI on existing PCBs?

A: Yes. Both substitute parts share identical 8-SOIC package geometry, pin configuration, and electrical operating parameters (supply voltage, temperature range, input/output ratio). Direct PCB footprint compatibility is confirmed.

Q: What is the difference between NB3N502DG and NB3N502DR2G?

A: The functional specifications are identical. The difference is packaging format: NB3N502DG is supplied in Tube format for manual handling, while NB3N502DR2G is supplied in Tape & Reel format for automated assembly equipment.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both NB3N502DG and NB3N502DR2G are ROHS3 Compliant, whereas the original ICS512MI is RoHS non-compliant. This represents improved regulatory compliance for new designs and manufacturing processes.

Q: Does the higher maximum frequency (190MHz vs. 160MHz) of the substitute parts affect compatibility?

A: No. The substitute parts operate within the same supply voltage range (3V ~ 5.5V) and temperature range (-40°C ~ 85°C) as the original part. The higher frequency specification indicates enhanced performance capability without affecting backward compatibility.

Q: What output signal types do the substitute parts support?

A: Both NB3N502DG and NB3N502DR2G support CMOS and TTL output options, compared to CMOS-only output in the ICS512MI. Applications requiring CMOS output will function identically to the original part.

Q: Are the substitute parts currently in production?

A: Yes. Both NB3N502DG and NB3N502DR2G are classified as Active products, ensuring long-term availability and ongoing manufacturing support, unlike the obsolete ICS512MI.

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