Bus line precharging tristate driver circuit

Details Bus line precharging tristate driver circuit Bus line precharging tristate driver circuit

1983-09-19

1985-07-23

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307247R, 307270, H03K 19094, H03K 19003

Patent

active

045310688

ABSTRACT:
A tristate driver circuit is provided on an integrated circuit chip for driving a bus line or signal line located off of the chip. This circuit very rapidly charges the bus line or signal line to positive voltage level each time and just before it switches to its tristate or high impedance output condition. This eliminates the need for a pull-up resistor or pull-up transistor to be connected to the off-chip bus line or signal line.

REFERENCES:
patent: 4096398 (1978-06-01), Khaitan
patent: 4449064 (1984-05-01), Eckert et al.
Homan, "FET Depletion Load Push-Pull Logical Circuit"; IBM Tech. Discl. Bull.; vol. 18, No. 3, pp. 910, 8/75.
Gaudenzi, "Bidirectional Tristate Driver"; IBM Tech. Discl., Bull.; vol. 20, No. 11A, pp. 4376-4377; 4/1978.
Puri et al., Testing Tristate Off-Chip Drivers in FET Designs"; IBM Tech. Discl. Bull.; vol. 23, No. 8, pp. 3798-3799; 1/1981.

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