A 2.6-Gbps/pin SIMOX-CMOS Low-Voltage-Swing Interface Circuit

Masafumi NOGAWA
Masayuki INO

IEICE TRANSACTIONS on Electronics   Vol.E79-C    No.4    pp.524-529
Publication Date: 1996/04/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Ultra-High-Speed LSIs)
CMOS,  interface,  high-speed,  active-pull-up,  SOI,  

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This paper describes a new active pull-up (APU) interface for high-speed point-to-point transmission. The APU circuit is used to speed up a low-power-consumption open-drain-type interface. It pulls up the output at a fixed duration and this limiting of the pull-up duration prevents the pull-up operation from going into a counter phase at over 1-Gbps operation. Measurements of test chips fabricated with 0.25-µm bulk CMOS show. 1.7-Gbps error-free operation for the APU interface and 1.2-Gbps operation for the open-drain-type interface: The APU interface is 1.4 faster than the open-drain type. The application of a 0.25-µm SIMOX-CMOS device to the APU interface increases the bit rate 1.5 times compared with 0.25-µm bulk CMOS. Altogether the interface covers the bit rate of 2.4 Gbps, which is a layer of the communication hierarchy. The APU interface circuit can be applied to large-pin-count LSIs because of its full-CMOS single-rail structure.