Features and Benefits

  • Supports Clock Frequencies up to 26 GHz
  • Fast Rise & Fall Times: 18/17 ps
  • Low Power Consumption: 270 mW typ.
  • Programmable Differential Output Voltage Swing: 600 - 1100 mV
  • Differential & Singe-Ended Operation
  • Propagation Delay: 95 ps
  • Single Supply: -3.3V
  • 16 Lead Ceramic 3×3mm
    SMT Package: 9mm2

Product Details

The HMC679LC3C is a T Flip-Flop w/Reset designed to support clock frequencies as high as 26 GHz. During normal operation, with the reset pin not asserted, the output toggles from its prior state on the positive edge of the clock. This results in a divide-by-two function of the clock input. Asserting the reset pin forces the Q output low regardless of the clock edge state (asynchronous reset assertion). Reversing the clock inputs allows for negative-edge triggered applications.

The HMC679LC3C also features an output level control pin, VR, which allows for loss compensation or for signal level optimization. All input signals to the HMC679LC3C are terminated with 50Ω to ground on-chip, and may be either AC or DC coupled. Outputs can be connected directly to a 50Ω terminated system, while DC blocking capacitors may be used if the terminating system is 50Ω to a non-ground DC voltage. The HMC679LC3C operates from a single -3.3V dc supply and is available in a ceramic RoHS compliant 3x3 mm SMT package.


  • Serial Data Transmission up to 26 Gbps
  • High Speed Frequency Divider (up to 26 GHz)
  • Broadband Test & Measurement
  • RF ATE Applications

Product Lifecycle icon-not-recommended Last Time Buy

All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.