TTL compatible input buffer

Details TTL compatible input buffer TTL compatible input buffer

1985-09-10

1987-06-30

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307576, 307585, 307362, 307594, 307355, 3072471, 323316, 323317, 330257, H03K 19092, H03K 17687, H03K 5153, H03K 524

Patent

active

046773215

ABSTRACT:
An input buffer circuit, especially well-suited for use as a TTL-TO-CMOS interface circuit, has a differential transistor pair at the input for stabilizing the circuit switching point relative to logic level voltage transitions occurring at the input. A preferred embodiment of the circuit has a first switching device in the input stage for decreasing the circuit response time to a first (e.g., high-to-low) logic level transition, and a second switching device for decreasing the response time to a second (e.g., low-to-high) logic level transition. Output buffers, in the form of inverters, may also be provided.

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