| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
QRRD3A2BY154JT Datasheet
QRRD3A2BY154JT Price The block diagram for both the Hl-8685 and Hl-8685-10 prod- ucts is found in Figure l. Both have built-in receivers elimi- nating the need for additional external ARINC level detection circuitry. The only dierence between the two products is the amount of internal resistance in series with each ARINC in- QRRD3A2BY154JT on stock When a negative trigger pulse is applied to pin 2, the flip-flop is set, releasing the short circuit across the external capacitor and driving the output HIGH. The voltage across the capacitor increases expo- nentially with the time constant T = R x C. When the voltage across the capacitor equals 2/3 Vcc, the comparator resets the flip-flopwhich then discharges the capacitor rapidly and drives the output to its LOW state. Figu re 3 shows the actual waveforms generated in this mode of operation. When Reset is not used, it should be tied high to avoid any possible or false triggering.
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