TW375829B - A CMOS I/O buffer suitable for mixed voltage interfacing application - Google Patents
A CMOS I/O buffer suitable for mixed voltage interfacing applicationInfo
- Publication number
- TW375829B TW375829B TW086107046A TW86107046A TW375829B TW 375829 B TW375829 B TW 375829B TW 086107046 A TW086107046 A TW 086107046A TW 86107046 A TW86107046 A TW 86107046A TW 375829 B TW375829 B TW 375829B
- Authority
- TW
- Taiwan
- Prior art keywords
- circuit
- boost circuit
- output
- voltage
- pull
- Prior art date
Links
Landscapes
- Logic Circuits (AREA)
Abstract
This invention discloses an I/O buffer suitable for mixed voltage interfacing application. In a circuit, it uses a bootstrap capacitor to accelerate voltage rise of the output terminal. This I/O buffer includes an output circuit and an input circuit. The output circuit has a first boost circuit and a second boost circuit which, respectively, pulls up the output voltage to VDD and pulls down output voltage to VSS. The first boost circuit comprises of a pull-up PMOS and an NMOS in series, and the second boost circuit comprises of a pull-down NMOS. In addition, there are two bootstrap control transistors in parallel to connect to the gate of the pull-up NMOS transistor, with the bootstrap capacitor to accelerate the voltage change at the output terminal of the first boost circuit drive. As for the input portion, it comprises an inverter and an electrostatic discharge protective resistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW086107046A TW375829B (en) | 1997-05-24 | 1997-05-24 | A CMOS I/O buffer suitable for mixed voltage interfacing application |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW086107046A TW375829B (en) | 1997-05-24 | 1997-05-24 | A CMOS I/O buffer suitable for mixed voltage interfacing application |
Publications (1)
Publication Number | Publication Date |
---|---|
TW375829B true TW375829B (en) | 1999-12-01 |
Family
ID=57941959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW086107046A TW375829B (en) | 1997-05-24 | 1997-05-24 | A CMOS I/O buffer suitable for mixed voltage interfacing application |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW375829B (en) |
-
1997
- 1997-05-24 TW TW086107046A patent/TW375829B/en not_active IP Right Cessation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |