Data output circuit for semiconductor integrated circuit device

Details Data output circuit for semiconductor integrated circuit device Data output circuit for semiconductor integrated circuit device

1994-04-06

1996-01-30

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Converging with plural inputs and single output

327108, 327389, 326 81, H03K 190185, H03K 17687

Patent

active

054883261

ABSTRACT:
A data output circuit includes a P-channel transistor having a source connected to a supply voltage terminal V.sub.DD and a gate coupled to receive a drive signal from an internal circuit, and an N-channel transistor having its drain connected to the drain of the P-channel transistor and its source connected to an output terminal D.sub.out. The threshold voltage of the N-channel transistor is fixed to be lower than the thresholds of other N-channel transistors formed on the same substrate. A high level signal is output from the output terminal D.sub.out when a voltage output by the supply voltage terminal V.sub.DD is supplied to the output terminal D.sub.out through the P-channel transistor and the N-channel transistor. In this configuration; the output terminal charges quickly using the high driving capability of the N-channel transistor. Since the N-channel transistor is interposed along the current path from the output terminal to the supply voltage terminal, current does not flow from the output terminal to the supply voltage terminal when a voltage higher than the supply voltage is applied to the output terminal.

REFERENCES:
patent: 4424456 (1984-01-01), Shiraki et al.
patent: 4506164 (1985-03-01), Higuchi
patent: 4565932 (1986-01-01), Kuo et al.
patent: 4697106 (1987-09-01), Watanabe
patent: 4806795 (1989-02-01), Nakano et al.
patent: 5013937 (1991-05-01), Aoki
patent: 5270589 (1993-12-01), Sawada et al.
patent: 5274276 (1993-12-01), Casper et al.
patent: 5276371 (1994-01-01), Jinbo
patent: 5296801 (1994-03-01), Ohtsuka et al.
European Search Report dated May 23, 1995, Appl. No. 94105379.5.

Affiliated with

Also associated with

Rating

Data output circuit for semiconductor integrated circuit device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data output circuit for semiconductor integrated circuit device , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data output circuit for semiconductor integrated circuit device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-158629