Device and method for limiting the extent to which circuits in i

Details Device and method for limiting the extent to which circuits in i Device and method for limiting the extent to which circuits in i

1996-09-09

1999-05-18

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

327407, 327415, H03K17/693

Patent

active

059054018

ABSTRACT:
An inventive integrated circuit die includes a bond pad connected to first and second input buffers in the die through laser fuses. In one operating configuration of the die, the die uses the first input buffer but does not use the second input buffer, so the laser fuse between the bond pad and the second input buffer is blown. In another operating configuration of the die, the die uses the second input buffer but does not use the first input buffer, so the laser fuse between the bond pad and the first input buffer is blown. As a result, the capacitive load on the bond pad is similar to the capacitive load on similar bond pads in the die connected to only one input buffer in the die. Thus, signals propagate into all the bond pads at about the same improved speed.

REFERENCES:
patent: 4813041 (1989-03-01), Reyeri
patent: 4894791 (1990-01-01), Jiang et al.
patent: 5233233 (1993-08-01), Inoue et al.
patent: 5252853 (1993-10-01), Michii
patent: 5272590 (1993-12-01), Hernandez
patent: 5327018 (1994-07-01), Karlish et al.
IBM Technical Disclosure Bulletin, Multiple Mode Selector for Input/Output Circuitry, vol.37, No. 07, Jul. 1994.
4 Meg Dram Die, Micron Technology, Inc., Nov. 1996, pp. 1-4.

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