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Texas Instruments CDCM1802RGTT — Clock & Timing ICs

CDCM1802RGTT Clock Buffer 1:2 800MHz 16QFN – Texas

MPNCDCM1802RGTT
End of Life

Texas Instruments CDCM1802RGTT, a 1:2 fanout buffer with divider and multiplexer, 800 MHz maximum frequency, differential I/O, 3V to 3.6V supply, in a 16-VQFN (3x3 mm) exposed-pad package.

$12.57Ref. price · indicative, final on quote
Texas Instruments CDCM1802RGTT datasheet (PDF)
Packaging16-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CDCM1802RGTT specifications
ParameterValue
TypeFanout Buffer (Distribution), Divider, Multiplexer
MountingSurface Mount
Voltage3V ~ 3.6V
Frequency800 MHz
Operating temperature-40°C ~ 85°C
InputLVCMOS, LVPECL, LVTTL
OutputLVCMOS, LVPECL
PackageTape & Reel (TR); Cut Tape (CT)
Case16-VFQFN Exposed Pad
Number of circuits1
Ratio - Input:Output1:2
Differential - Input:OutputYes/Yes

Product details

800 MHz fanout buffer with divider and mux

The CDCM1802RGTT is a 1:2 fanout buffer that also integrates a divider and a multiplexer — three functions in one 16-VQFN package. The 800 MHz maximum frequency covers most high-speed serial clock distribution needs up to Gigabit Ethernet, FPGA reference clocks, and SERDES reference paths. Input accepts LVCMOS, LVPECL, or LVTTL levels; output can be LVCMOS or LVPECL. The differential input-to-output path (Yes/Yes) means it preserves signal integrity for LVPECL fanout without external level translation.

Operates from 3V to 3.6V — a 3.3V nominal rail is the sweet spot.

Active production — no obsolescence watch

Texas Instruments lists CDCM1802RGTT as Active. ROHS3 compliant. For BOM planning, this part carries no near-term end-of-life risk.

Frequently asked questions

Is CDCM1802RGTT compatible with LVPECL inputs?

Yes. The input stage accepts LVPECL levels directly (along with LVCMOS and LVTTL). The output can also drive LVPECL loads. No external level-shifting resistor network is needed for LVPECL-to-LVPECL paths.

How does CDCM1802RGTT compare to the CDCLVP1204RGTR?

The CDCLVP1204RGTR is a 2:4 fanout mux (no divider) with a 2 GHz maximum frequency and 2.375V minimum supply. The CDCM1802RGTT is a 1:2 buffer/divider/mux at 800 MHz. If you need a divider or a wider supply range, the CDCM1802RGTT fits; if you need more outputs or higher frequency, the CDCLVP1204RGTR is the alternative.