CSPT855PGG Equivalent & Substitute Parts

Part Overview

The CSPT855PGG is a Memory DDR Clock Buffer/Driver IC manufactured by Renesas Electronics Corporation, designed for zero-delay buffering and multiplexing applications in DDR memory systems. This 28-TSSOP surface-mount device operates at frequencies up to 220MHz with a 1:4 input-to-output ratio and differential signaling on both input and output.

The CSPT855PGG is classified as obsolete. Substitute parts are necessary to maintain system compatibility and ensure continued availability for new designs and production requirements.

Substiute Parts

CSPT855PGG

Renesas Electronics CorporationIn Stock: 1046CSPT855PGG Datasheet

Current PartRFQ

CDCVF855PW

Texas InstrumentsIn Stock: 1291CDCVF855PW Datasheet

MFR RecommendedRFQ

CDCVF855PWR

Texas InstrumentsIn Stock: 2227CDCVF855PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CSPT855PGG is based on the following critical parameters that must align between the main part and substitute candidates:

• Package compatibility: 28-TSSOP form factor ensures mechanical and electrical pin compatibility
• Frequency specification: Maximum operating frequency of 220MHz or higher
• Supply voltage range: 2.3V ~ 2.7V compatibility for power delivery
• Differential signaling: Both input and output must support differential signal processing
• Single circuit configuration: One independent clock buffer/driver circuit
• Surface mount technology: Identical mounting methodology

The identified substitute parts are Texas Instruments CDCVF855PW and CDCVF855PWR, which share the same package, frequency rating, voltage specification, and differential I/O architecture. Both parts are active products with enhanced operating temperature ranges and improved compliance certifications compared to the obsolete CSPT855PGG.

Parameter Comparison

Engineering Selection Recommendations

Both CDCVF855PW and CDCVF855PWR are direct functional equivalents to the CSPT855PGG. Selection between these two substitute parts depends on procurement and assembly requirements:

CDCVF855PW is supplied in tube packaging and is suitable for lower-volume applications or manual assembly processes.

CDCVF855PWR is supplied in tape and reel format and is optimized for high-volume automated assembly operations.

Both substitute parts offer advantages over the obsolete CSPT855PGG:

• Active product status ensures long-term availability and supply chain stability
• Extended operating temperature range (-40°C ~ 85°C) provides broader environmental compatibility
• ROHS3 compliance and MSL 1 rating indicate superior environmental and moisture resistance
• PLL with bypass functionality provides enhanced flexibility in clock distribution applications

Frequently Asked Questions (FAQ)

Q: Can CDCVF855PW and CDCVF855PWR be used interchangeably with CSPT855PGG?

A: Yes. Both parts share identical electrical specifications, package geometry, and functional characteristics. The only difference is packaging format: CDCVF855PW uses tube packaging while CDCVF855PWR uses tape and reel format.

Q: What is the difference between CDCVF855PW and CDCVF855PWR?

A: Both parts are electrically and functionally identical. CDCVF855PW is packaged in tubes for manual handling, while CDCVF855PWR is packaged in tape and reel format for automated pick-and-place assembly. Select based on your assembly process requirements.

Q: Are there any pin compatibility concerns when substituting these parts?

A: No. All three parts use the identical 28-TSSOP package with the same pin configuration and spacing (0.173", 4.40mm width). Direct PCB footprint compatibility is confirmed.

Q: What is the significance of the extended operating temperature range in the substitute parts?

A: The CDCVF855PW and CDCVF855PWR operate from -40°C to 85°C, compared to the CSPT855PGG range of 0°C to 70°C. This extended range allows operation in more demanding thermal environments and provides additional design margin for industrial and automotive applications.

Q: Why is the Moisture Sensitivity Level (MSL) different?

A: The CSPT855PGG has MSL 3 (168 hours), while the substitute parts have MSL 1 (unlimited). MSL 1 indicates superior moisture resistance and eliminates the need for bake-out procedures before soldering, reducing manufacturing complexity and cost.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CDCVF855PW and CDCVF855PWR are ROHS3 compliant, meeting current environmental and hazardous substance restrictions. The CSPT855PGG RoHS status was not specified in the original documentation.