1.5-V low supply voltage 43-Gb/s delayed flip-flop circuit

Yasushi Amamiya, Yasuyuki Suzuki, Jin Yamazaki, Akira Fujihara, Shinichi Tanaka, Hikaru Hida

Research output: Contribution to conferencePaperpeer-review

15 Citations (Scopus)


This paper reports the first low (1.5-V) supply voltage D-F/F able to run at a full rate of over 43 Gb/s. The proposed F/F circuitry incorporates parallel current switching together with inductive peaking, a combination that makes it suitable for over-43-Gb/s operation at a supply voltage as low as 1.5 V. The D-F/F, implemented through an InP-HBT process, provided 43-Gb/s error free operation with a large clock phase margin of 232 degrees. Moreover, the D-F/F produced a well-opened 50-Gb/s eye diagram. Power dissipation (Pdiss) of the D-F/F core circuit was reduced to 40 mW, which is less than one-tenth that of our conventional D-F/F. The F/F circuitry should help enable development of a low-Pdiss 43-Gb/s full-rate module with a 1.5-V-range supply voltage, which can be seamlessly connected with high-speed CMOS I/O circuits.

Original languageEnglish
Number of pages4
Publication statusPublished - 2003
EventGaAs IC Symposium IEEE Gallium Arsenide Intergrated Circuit Symposium - San Diego, CA, United States
Duration: 2003 Nov 92003 Nov 12


ConferenceGaAs IC Symposium IEEE Gallium Arsenide Intergrated Circuit Symposium
Country/TerritoryUnited States
CitySan Diego, CA


  • D-F/F
  • High speed
  • InP HBT
  • Low supply voltage

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of '1.5-V low supply voltage 43-Gb/s delayed flip-flop circuit'. Together they form a unique fingerprint.

Cite this