Patent · US Active

Data output circuit

US9467145B2 · kind B2 · utility

1Cited by

20References

14Claims

0Family size

Assignee

SK hynix Inc. · KR

Inventors

Won Sub Song · Seojong-myeon, KR
Jong Tai Park · Seojong-myeon, KR

Key dates

Filing date	Sep 6, 2011
Grant date	Oct 11, 2016
Priority date	—
Expiry date	Sep 6, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03K19/017581
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A data output circuit includes a main driver including a pull-up driver, coupled between a power supply terminal and a node coupled to the pad and a pull-down driver coupled between the node and a ground terminal, an impedance controller configured to control an output impedance at the node by sensing a voltage at the node and to generate pull-up control signals and pull-down control signals based on the sensed voltage, and a pre-driver configured to control driving strengths of the pull-up driver and the pull-down driver in response to the pull-up control signals, the pull-down control signals, and data.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.