CDCP1803MRGETEP Equivalent & Substitute Parts

Part Overview

The CDCP1803MRGETEP is a Clock Fanout Buffer (Distribution), Divider, Multiplexer IC manufactured by Texas Instruments, designed for 1:3 clock distribution at frequencies up to 800 MHz. This device features a 24-VFQFN Exposed Pad package and supports multiple input standards including CML, HSTL, LVDS, LVPECL, LVTTL, SSTL-2, and VML, with LVPECL output. The part is currently marked as Obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

CDCP1803MRGETEP

Texas InstrumentsIn Stock: 1085CDCP1803MRGETEP Datasheet

Current PartRFQ

CDCP1803RGET

Texas InstrumentsIn Stock: 1400CDCP1803RGET Datasheet

MFR RecommendedRFQ

CDCV304TPWREP

Texas InstrumentsIn Stock: 4397CDCV304TPWREP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDCP1803MRGETEP are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Manufacturer: Texas Instruments (same manufacturer ecosystem)
• Type: Fanout Buffer (Distribution), Divider, Multiplexer
• Input/Output Ratio: 1:3 or higher (maintains or exceeds distribution capability)
• Frequency - Max: 800 MHz or higher (maintains or exceeds frequency performance)
• Voltage - Supply: 3V ~ 3.6V compatibility (maintains power supply compatibility)
• Package / Case: 24-VFQFN Exposed Pad (maintains PCB layout compatibility)
• Mounting Type: Surface Mount (maintains assembly compatibility)

Secondary Compatibility Factors:

• Input Standards: Support for LVPECL or equivalent high-speed standards
• Output Standards: LVPECL output capability
• RoHS Status: ROHS3 Compliant (maintains regulatory compliance)

Parameter Comparison

Engineering Selection Recommendations

CDCP1803RGET (Manufacturer Recommended Substitute):

The CDCP1803RGET is the primary substitute for the obsolete CDCP1803MRGETEP. This part maintains identical electrical specifications including 1:3 input:output ratio, 800 MHz maximum frequency, 3V ~ 3.6V supply voltage, and 24-VFQFN Exposed Pad package. The CDCP1803RGET is currently in Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 Compliant and share the same base product number (CDCP1803), confirming functional equivalence. The primary difference is the operating temperature range: CDCP1803RGET operates from -40°C ~ 85°C compared to the main part's -55°C ~ 125°C. This substitution is suitable for applications where the narrower temperature range is acceptable. The CDCP1803RGET also supports LVCMOS input in addition to the main part's input standards.

CDCV304TPWREP (Alternative Substitute):

The CDCV304TPWREP is an alternative substitute suitable only for applications where frequency and distribution requirements differ from the original design. This part operates at a maximum frequency of 200 MHz (versus 800 MHz) and provides 1:4 distribution (versus 1:3). The package is 8-TSSOP, which differs from the 24-VFQFN Exposed Pad of the main part, requiring PCB layout redesign. Input and output standards are limited to LVTTL. The CDCV304TPWREP is Active in product status and ROHS3 Compliant. This substitute is applicable only when lower frequency operation and different package constraints are compatible with the end application.

Frequently Asked Questions (FAQ)

Q: Can CDCP1803RGET be used as a direct replacement for CDCP1803MRGETEP?

A: Yes, for applications where the operating temperature range of -40°C ~ 85°C is acceptable. The CDCP1803RGET maintains identical electrical performance, package, and frequency specifications. Verify that your application does not require the extended low-temperature operation (-55°C) or high-temperature operation (above 85°C) of the original part.

Q: What are the key differences between CDCP1803RGET and CDCV304TPWREP?

A: The CDCP1803RGET maintains the 1:3 ratio and 800 MHz frequency of the original part, while CDCV304TPWREP reduces both to 1:4 ratio and 200 MHz frequency. Additionally, CDCV304TPWREP uses an 8-TSSOP package instead of 24-VFQFN, requiring PCB redesign. CDCV304TPWREP is suitable only for lower-frequency applications.

Q: Are both substitute parts RoHS compliant?

A: Yes, both CDCP1803RGET and CDCV304TPWREP are ROHS3 Compliant, matching the compliance status of the original CDCP1803MRGETEP.

Q: Does CDCP1803RGET support the same input standards as the original part?

A: CDCP1803RGET supports all input standards of the original part (CML, HSTL, LVDS, LVPECL, LVTTL, SSTL-2, VML) plus LVCMOS, providing enhanced input flexibility.

Q: What is the impact of the different operating temperature range in CDCP1803RGET?

A: The CDCP1803RGET operates from -40°C ~ 85°C, compared to the original part's -55°C ~ 125°C. If your application requires operation below -40°C or above 85°C, CDCP1803RGET is not suitable. Confirm your application's temperature requirements before selection.

Q: Can CDCV304TPWREP be used in high-frequency clock distribution applications?

A: No. CDCV304TPWREP is limited to 200 MHz maximum frequency and is not suitable for applications requiring 800 MHz operation. This part is applicable only to lower-frequency clock distribution designs.

Q: What supply voltage range is supported by the substitute parts?

A: CDCP1803RGET supports 3V ~ 3.6V, identical to the original part. CDCV304TPWREP supports a wider range of 2.3V ~ 3.6V, providing additional flexibility for lower-voltage applications.