ICS570B Equivalent & Substitute Parts

Part Overview

The ICS570B is a Fanout Distribution and Spread Spectrum Clock Generator with Zero Delay Buffer functionality, manufactured by Renesas Electronics Corporation. This 8-SOIC surface mount integrated circuit operates at frequencies up to 170MHz and features a 1:2 input-to-output ratio with integrated Phase-Locked Loop (PLL) and divider/multiplier capabilities. The ICS570B is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Manufacturer	Renesas Electronics Corporation
Part Number	ICS570B
Product Category	Clock/Timing - Fanout Distribution, Spread Spectrum Clock Generator, Zero Delay Buffer
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Maximum Frequency	170MHz
Input/Output Ratio	1:2
Supply Voltage Range	3.15V ~ 3.45V
Operating Temperature Range	0°C ~ 70°C
Output Type	CMOS
PLL Feature	Yes
Divider/Multiplier	Yes/Yes
Number of Circuits	1
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the ICS570B are identified based on strict electrical and mechanical parameter matching within the ClockBlocks™ series. The primary substitution criterion is functional equivalence across all critical parameters: identical package type (8-SOIC), matching frequency specifications (170MHz maximum), equivalent supply voltage range (3.15V ~ 3.45V), identical input/output ratio (1:2), and matching output type (CMOS). The substitute part 570BLF maintains all functional and electrical characteristics of the ICS570B while differing in product status and compliance certifications. Both parts share the same base product number (570B) and are manufactured by Renesas Electronics Corporation, confirming their direct equivalence within the product family.

Parameter Comparison

Parameter	ICS570B (Main Part)	570BLF (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Category	Clock/Timing - Fanout Distribution, Spread Spectrum Clock Generator, Zero Delay Buffer	Clock/Timing - Fanout Distribution, Spread Spectrum Clock Generator, Zero Delay Buffer
Package Type	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
Maximum Frequency	170MHz	170MHz
Input/Output Ratio	1:2	1:2
Supply Voltage Range	3.15V ~ 3.45V	3.15V ~ 3.45V
Operating Temperature Range	0°C ~ 70°C	0°C ~ 70°C
Output Type	CMOS	CMOS
PLL Feature	Yes	Yes
Divider/Multiplier	Yes/Yes	Yes/Yes
Number of Circuits	1	1
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Format	Not specified	Tube

Engineering Selection Recommendations

The 570BLF serves as the direct functional equivalent to the obsolete ICS570B. Both parts maintain identical electrical specifications, frequency performance, and package configuration. The primary distinction between these parts is product lifecycle status and regulatory compliance. The ICS570B is classified as obsolete and does not meet RoHS3 compliance requirements, whereas the 570BLF is an active product with full ROHS3 compliance certification. For new designs or component replenishment, the 570BLF is the appropriate selection. The 570BLF is supplied in tube packaging format, which differs from the ICS570B specification but does not affect functional performance or circuit compatibility. Both parts maintain identical REACH and ECCN classifications (REACH Unaffected, EAR99), confirming regulatory equivalence for export and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can the 570BLF directly replace the ICS570B in existing circuit designs?

A: Yes. The 570BLF is electrically and mechanically equivalent to the ICS570B. Both parts feature identical frequency specifications (170MHz maximum), supply voltage range (3.15V ~ 3.45V), input/output ratio (1:2), package type (8-SOIC), and operating temperature range (0°C ~ 70°C). No circuit modifications are required for substitution.

Q: What is the primary reason to substitute the ICS570B with the 570BLF?

A: The ICS570B is classified as obsolete, making long-term availability uncertain. The 570BLF is an active product from the same manufacturer and product family, ensuring reliable procurement and supply chain continuity.

Q: Are there compliance differences between these parts?

A: Yes. The ICS570B is RoHS non-compliant, while the 570BLF meets ROHS3 compliance standards. Both parts maintain identical REACH and ECCN classifications. If RoHS3 compliance is a system requirement, the 570BLF is the appropriate selection.

Q: Does the packaging format difference affect compatibility?

A: No. The ICS570B and 570BLF are supplied in different packaging formats (unspecified for ICS570B, tube for 570BLF), but both use the identical 8-SOIC surface mount package. Packaging format affects logistics and handling only, not electrical performance or circuit compatibility.

Q: What parameters determine substitution eligibility for the ICS570B?

A: Substitution is based on matching the following parameters: package type (8-SOIC), maximum frequency (170MHz), supply voltage range (3.15V ~ 3.45V), input/output ratio (1:2), output type (CMOS), PLL functionality, divider/multiplier capability, and operating temperature range (0°C ~ 70°C). The 570BLF meets all these criteria.

Q: Are both parts suitable for new design implementations?

A: The 570BLF is recommended for new designs due to its active product status and RoHS3 compliance. The ICS570B, being obsolete, is suitable only for legacy system maintenance or component replacement in existing applications.

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