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IC provides versatile toggle functions.
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EDN
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August 21, 2008
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Copyright informationCOPYRIGHT 2008 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Louis Vlemincq, Belgacom, Evere, Belgium
Edited by Martin Rowe and Fran Granville
The circuit in Figure 1 offers not only as many as six channels in a single IC package, but also a high level of additional flexibility. The configuration of Output 1 is a 'plain-vanilla' toggle. A resistive divider comprising R1 and R2 provides a midsupply bias to all the channels through resistors R3 , R6 , R7 , R10 , and R12 . Because the bias voltage of R1 /R2 is within the hysteresis range of the gates, they behave as flip-flops, retaining their high or low state in a stable manner.
Debouncing capacitors C2 , C3 , C4 , and C5 charge to the level of the output. Pushing switch S1 ...
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