CDCP1803RTHR Equivalent & Substitute Parts

Part Overview

The CDCP1803RTHR is a Clock Fanout Buffer (Distribution), Divider, Multiplexer IC manufactured by Texas Instruments. This device provides 1:3 clock distribution at frequencies up to 800 MHz with support for multiple input signal types (CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML) and LVPECL output. The CDCP1803RTHR is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Clock/Timing
Type	Fanout Buffer (Distribution), Divider, Multiplexer
Ratio - Input:Output	1:3
Differential - Input:Output	Yes/Yes
Input Signal Types	CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML
Output Signal Type	LVPECL
Frequency - Max	800 MHz
Voltage - Supply	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	24-VFQFN Exposed Pad
Supplier Device Package	24-VQFN (4x4)
Number of Circuits	1
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitute parts for the CDCP1803RTHR are determined by strict equivalence across the following critical parameters:

Functional Equivalence: 1:3 clock distribution ratio with identical input/output differential configuration
Frequency Performance: Maximum operating frequency of 800 MHz
Signal Compatibility: Support for CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML inputs with LVPECL output
Electrical Specifications: 3V to 3.6V supply voltage range and -40°C to 85°C operating temperature
Physical Package: 24-VFQFN Exposed Pad (24-VQFN 4x4) surface mount package
Base Product Number: CDCP1803 series

The identified substitutes (CDCP1803RGER and CDCP1803RGET) maintain identical electrical and mechanical specifications while differing in product status and packaging format.

Parameter Comparison

Parameter	CDCP1803RTHR	CDCP1803RGER	CDCP1803RGET
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active
Type	Fanout Buffer (Distribution), Divider, Multiplexer	Fanout Buffer (Distribution), Divider, Multiplexer	Fanout Buffer (Distribution), Divider, Multiplexer
Ratio - Input:Output	1:3	1:3	1:3
Differential - Input:Output	Yes/Yes	Yes/Yes	Yes/Yes
Input Signal Types	CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML	CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML	CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, VML
Output Signal Type	LVPECL	LVPECL	LVPECL
Frequency - Max	800 MHz	800 MHz	800 MHz
Voltage - Supply	3V ~ 3.6V	3V ~ 3.6V	3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	24-VFQFN Exposed Pad	24-VFQFN Exposed Pad	24-VFQFN Exposed Pad
Supplier Device Package	24-VQFN (4x4)	24-VQFN (4x4)	24-VQFN (4x4)
Number of Circuits	1	1	1
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)	2 (1 Year)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Bulk	Tape & Reel (TR)

Engineering Selection Recommendations

CDCP1803RGER is the primary substitute for the obsolete CDCP1803RTHR. This part maintains complete electrical and mechanical equivalence while offering active product status and ROHS3 compliance. The CDCP1803RGER is supplied in bulk packaging format.

CDCP1803RGET provides an alternative substitute with identical electrical and mechanical specifications. This variant is supplied in Tape & Reel (TR) packaging format and is suitable for automated assembly processes requiring reel-based component delivery. The CDCP1803RGET also maintains active product status and ROHS3 compliance.

Both substitutes are suitable for direct replacement in applications currently using the CDCP1803RTHR, with selection between CDCP1803RGER and CDCP1803RGET determined by packaging and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can CDCP1803RGER and CDCP1803RGET be used interchangeably with CDCP1803RTHR?

A: Yes. Both substitutes maintain identical electrical specifications, signal compatibility, frequency performance, supply voltage range, operating temperature range, and physical package dimensions. Selection between them depends on packaging format requirements (bulk versus Tape & Reel).

Q: What is the primary difference between CDCP1803RGER and CDCP1803RGET?

A: The primary difference is packaging format. CDCP1803RGER is supplied in bulk packaging, while CDCP1803RGET is supplied in Tape & Reel (TR) format. Both parts are electrically and mechanically identical.

Q: Why is the CDCP1803RTHR classified as obsolete?

A: The CDCP1803RTHR has been discontinued by Texas Instruments. The active equivalents CDCP1803RGER and CDCP1803RGET are the current production alternatives.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CDCP1803RGER and CDCP1803RGET are ROHS3 compliant, whereas the original CDCP1803RTHR is RoHS non-compliant.

Q: What input signal types does this clock buffer support?

A: The CDCP1803 series supports CML, HSTL, LVCMOS, LVDS, LVTTL, SSTL-2, and VML input signals with LVPECL output.

Q: Is the 24-VQFN (4x4) package suitable for high-density PCB layouts?

A: Yes. The 24-VFQFN Exposed Pad package with 4x4mm dimensions is designed for surface mount applications and is compatible with standard PCB assembly processes.

Q: What is the maximum operating frequency for these clock buffers?

A: The maximum operating frequency is 800 MHz for all variants in the CDCP1803 series.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message