ESD PROTECTION CIRCUITS FOR MIXED-VOLTAGE BUFFERS
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Feb 12, 2009
app pub date -
Aug 10, 2007
filing date -
Aug 10, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Abstract
An ESD protection circuit that protects a mixed-voltage input/output (I/O) buffer circuit in an integrated circuit is provided. The ESD protection circuit includes an ESD discharging circuit coupled to the I/O pad and ESD detection circuit coupled to the discharging circuit providing a means for detecting an ESD and triggering the discharging circuit to conduct the ESD to ground. The ESD discharging circuit comprises stacked NMOS transistors or a field oxide device (FOD). The protection circuit can also be used in an ESD protection circuit for a high-voltage-tolerant input pad or to protect multiple input pads and/or multiple I/O pads in an integrated circuit.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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TRANSPACIFIC IP LTD | ROOM 1402 14F NO 205 DUNHUA N ROAD SONGSHAN DISTRICT TAIPEI CITY 105 R O C |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chen, Zi-Ping | Hsinchu, TW | 19 | 176 |
# of filed Patents : 19 Total Citations : 176 | |||
Jiang, Hsin-Chin | Hsinchu, TW | 31 | 299 |
# of filed Patents : 31 Total Citations : 299 | |||
Ker, Ming-Dao | Hsinchu, TW | 2 | 21 |
# of filed Patents : 2 Total Citations : 21 |
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Patent Citation Ranking
- 12 Citation Count
- H02H Class
- 58.19 % this patent is cited more than
- 16 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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