TW375829B - A CMOS I/O buffer suitable for mixed voltage interfacing application - Google Patents

A CMOS I/O buffer suitable for mixed voltage interfacing application

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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
Application number
TW086107046A
Other languages
Chinese (zh)
Inventor
Huang-Cheng Zhou
Original Assignee
Transpacific Ip Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Transpacific Ip Ltd filed Critical Transpacific Ip Ltd
Priority to TW086107046A priority Critical patent/TW375829B/en
Application granted granted Critical
Publication of TW375829B publication Critical patent/TW375829B/en

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  • 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.
TW086107046A 1997-05-24 1997-05-24 A CMOS I/O buffer suitable for mixed voltage interfacing application TW375829B (en)

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)

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees