Timer circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 14, 2000
Issued Date -
N/A
app pub date -
Aug 17, 1999
filing date -
Jul 7, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A timer circuit and oscillator are disclosed. The timer circuit is similar in functionality to a '555 timer circuit but uses few transistors. The timer circuit has two differential pairs of transistors, three current mirrors, two selectable current sources, and one inverter. The two differential pairs of transistors, three current mirrors, two selectable current sources, and one inverter are arranged to receive an IN+ voltage, an IN voltage, and a IN- voltage. From these inputs a Q and a Q(bar) output is generated. This timing circuit can be used to generate an oscillator by connecting a capacitor, a current source, and current drain to the IN voltage.
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Family
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