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Industry: Email Alert RSS FeedIC switch squelches negative vibes. (leading edge).(Fairchild Semiconductor NC7SBU3157 SPDT analog bus switch)(Brief Article)
EDN, June, 2002 by Schweber, Bill
NEGATIVE-GOING voltage transients can harm even single-supply, battery-operated devices. The Fairchild Semiconductor NC7SBU3157 SPDT analog bus switch, which functions as a 2:1 multiplexer/demultiplexer, protects your system ICs from noise, negative transients, and undershoot voltages as high as -2V. Such events can occur when a user switches from speaker to headphone or inserts an audio plug into a CD or MP3 player, for example. The break-before-make switch features 10[ohm] on-resistance when operating from a 3.3V supply and functions rail-to-rail over a 1.65 to 5.5V supply range. The six-lead SC70 sports total harmonic distortion of 0.001% and a 250-MHz, 3-dB bandwidth; the control input of this 90-cent device (1000) goes to a high-impedance mode on power-down....
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