Features and Benefits

  • Supports Data Rates up to 43 Gbps
  • Low Power Consumption: 630 mW
  • Fast Rise and Fall Times: 12/12 ps
  • Single-Ended or Differential Operation

  • Adjustable Differential Output Voltage Swing: 200 - 850 mVp-p
  • 24 Lead 4x4mm SMT Package: 16mm²

Product Details

The HMC841LC4B is a D-type Flip-Flop designed to support data transmission rates of up to 43 Gbps, and clock frequencies as high as 43 GHz. During normal operation, data is transferred to the outputs on the positive edge of the clock. Reversing the clock inputs allows for negative-edge triggered applications. The HMC841LC4B also features an output level control pin, VAC, which allows for loss compensation or for signal level optimization.

All input signals to the HMC841LC4B are terminated with 50 Ohms to ground on-chip, and maybe either AC or DC coupled. The differential outputs of the HMC841LC4B may be either AC or DC coupled. Outputs can be connected directly to a 50 Ohms-to-ground terminated system, while DC blocking capacitors should be used if the terminating system is 50 Ohms to a non-ground DC voltage. The HMC841LC4B operates from a single -3.3V DC supply and is available in a ceramic RoHS compliant 4x4 mm SMT package.


  • OC-768 and SDH STM-256 Equipment
  • RF ATE Applications
  • Serial Data Transmission up to 43 Gbps
  • Digital Logic Systems up to 43 Gbps
  • Broadband Test & Measurement

Product Lifecycle icon-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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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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