Electronic digital logic circuitry – Interface – Logic level shifting
Patent
1996-02-29
1997-12-09
Westin, Edward P.
Electronic digital logic circuitry
Interface
Logic level shifting
326 17, 326 23, 326 80, H03K 190944, H03K 19017
Patent
active
056964560
ABSTRACT:
A differential transistor pair is used for a Low Voltage Transistor-Transistor Logic (LVTTL) input buffer to provide an input buffer for a modified and enhanced LVTTL specification. The differential input buffer accurately detects high and low voltages which are respectively lower and higher than existing specified LVTTL voltage levels, yet provides output voltages that are representative of intended logic levels. This provides the ability to use the improved input buffer with existing drivers at higher frequencies where the voltage swing provided by the existing drivers do not produce as large a voltage swing as that required by existing LVTTL specifications.
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patent: 5596291 (1997-01-01), Runas
Micro)n Technology, Inc.
Santamauro Jon
Westin Edward P.
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