[특허]Programmable output pad with circuitry for reducing ground bounce noise and power supply noise and method therefor

Programmable output pad with circuitry for reducing ground bounce noise and power supply noise and method therefor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H03K-017/16
출원번호	US-0269800 (1994-06-30)
발명자 / 주소	Oh Sung-Hun (Phoenix AZ) Taylor Richard M. (Phoenix AZ)
출원인 / 주소	VLSI Technology, Inc. (San Jose CA 02)
인용정보	피인용 횟수 : 62 인용 특허 : 0

초록 ▼

A programmable output pad is disclosed that reduces ground bounce noise and power supply noise under different power supply values and under different load conditions. The programmable output pad comprises a pre-driver, a driver, and a controllable delay. The pre-driver transfers a signal from the input of the output pad to the driver which, in turn, transfers the signal from the pre-driver to an output of the output pad. The controllable delay provides one or more resistors, transistors, transmission gates, or equivalents thereof at the input of the driver which are controlled in order to provide a plurality of different time delays. By selecting these different time delays, the activation of the driver is delayed by different amounts of time. For a given power supply value and load condition, selection of the proper delay effectively reduces both the ground bounce noise on the ground supply of the programmable output pad and the noise on the power supply of the programmable output pad.

대표청구항 ▼

A programmable output pad for use with one of a high supply voltage and a low supply voltage, comprising, in combination: pre-driver means coupled to an input of said programmable output pad for transferring a signal from said input, said pre-driver means comprising a plurality of transistors; driver means coupled to said pre-driver means for transferring said signal from said pre-driver means to an output of said programmable output pad, said driver means comprising: a first transistor having a control junction thereof coupled to a first portion of said pre-driver means, and a second transistor having a control junction thereof coupled to a second portion of said pre-driver means; and controllable delay means coupled between said pre-driver means and said driver means for providing a plurality of different time delays for delaying activation of said driver means by different amounts of time and for reducing ground bounce noise on a ground supply of said programmable output pad, and for reducing noise on one of said high supply voltage and said low supply voltage of said programmable output pad, said controllable delay means comprising impedance means coupled between said control junction of said first transistor and said control junction of said second transistor for delaying said activation of said driver means.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Programmable output pad with circuitry for reducing ground bounce noise and power supply noise and method therefor 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (62)

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연합인증

Programmable output pad with circuitry for reducing ground bounce noise and power supply noise and method therefor 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (62)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

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