ICS291PGIT Clock/Frequency Synthesizer Equivalent & Substitute Parts

Part Overview

The ICS291PGIT is a Clock/Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, designed for applications requiring programmable clock generation and frequency synthesis. This device operates at a maximum frequency of 200MHz and integrates a Phase-Locked Loop (PLL) with bypass capability, supporting both clock and crystal inputs with CMOS output.

The ICS291PGIT is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for legacy systems and new designs requiring compatible timing solutions.

Substiute Parts

ICS291PGIT

Renesas Electronics CorporationIn Stock: 1045ICS291PGIT Datasheet

Current PartRFQ

291PGILFT

Renesas Electronics CorporationIn Stock: 858291PGILFT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICS291PGIT are identified based on strict electrical and mechanical parameter matching within the VersaClock® product family. The substitution criteria are:

• Identical maximum frequency specification (200MHz)
• Matching PLL architecture with bypass capability
• Compatible input types (Clock, Crystal)
• Identical CMOS output configuration
• Matching input-to-output ratio (1:6)
• Identical supply voltage range (3.135V ~ 3.465V)
• Identical operating temperature range (-40°C ~ 85°C)
• Identical package type (20-TSSOP with 0.173", 4.40mm Width)
• Matching divider/multiplier functionality
• Surface mount mounting type

The 291PGILFT meets all these criteria and qualifies as a direct substitute for the ICS291PGIT.

Parameter Comparison

Engineering Selection Recommendations

The 291PGILFT is the recommended substitute for the ICS291PGIT based on the following engineering considerations:

Product Status: The 291PGILFT maintains active product status with Renesas Electronics Corporation, ensuring ongoing availability, technical support, and supply chain continuity. The ICS291PGIT is classified as obsolete, making the 291PGILFT the appropriate choice for new designs and legacy system support.

Regulatory Compliance: The 291PGILFT is ROHS3 compliant, meeting current environmental and regulatory requirements. The ICS291PGIT is RoHS non-compliant, which may present compliance challenges for applications subject to modern regulatory standards.

Electrical and Mechanical Compatibility: All critical electrical parameters and mechanical specifications are identical between the two parts, including frequency range, supply voltage, operating temperature, package type, and functional architecture. This ensures direct functional equivalence in circuit applications.

Supply Chain Availability: Current inventory status indicates 789 pieces of the 291PGILFT are available as new original stock, compared to 976 pieces of the obsolete ICS291PGIT. The active status of the 291PGILFT provides superior long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can the 291PGILFT be used as a direct replacement for the ICS291PGIT in existing designs?

A: Yes. The 291PGILFT is electrically and mechanically equivalent to the ICS291PGIT. All functional parameters, including frequency specifications, supply voltage, operating temperature range, input/output configurations, and package type are identical. No circuit modifications are required for substitution.

Q: What is the primary difference between the ICS291PGIT and the 291PGILFT?

A: The primary differences are product status and regulatory compliance. The ICS291PGIT is obsolete and RoHS non-compliant, while the 291PGILFT is an active product that meets ROHS3 compliance standards. Functionally and electrically, both devices are equivalent.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the identical 20-TSSOP package with 0.173" width and 4.40mm body width. Pinout and mechanical dimensions are identical, ensuring direct PCB compatibility.

Q: Why should I transition from the ICS291PGIT to the 291PGILFT?

A: Transition is recommended due to the obsolete status of the ICS291PGIT and the active availability of the 291PGILFT. The 291PGILFT also provides ROHS3 compliance, supporting modern regulatory requirements and ensuring long-term supply chain reliability.

Q: Are the input and output specifications identical between both parts?

A: Yes. Both parts support identical input types (Clock, Crystal), output type (CMOS), input-to-output ratio (1:6), and PLL configuration with bypass capability. Frequency specifications, supply voltage range, and operating temperature range are also identical.