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CD74HCT259EE4 Scheda tecnica(PDF) 2 Page - Texas Instruments |
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CD74HCT259EE4 Scheda tecnica(HTML) 2 Page - Texas Instruments |
2 / 16 page 2 Pinout CD54HC259, CD54HCT259 (CERDIP) CD74HC259, CD74HCT259 (PDIP, SOIC) TOP VIEW Functional Diagram 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 A0 A1 A2 Q0 Q1 Q2 GND Q3 VCC LE D Q7 Q6 Q5 Q4 MR 1 2 3 14 15 13 4 5 6 7 10 12 11 9 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 MR LE 8 LATCHES 1-OF-8 DECODER D A2 A1 A0 GND = 8 VCC = 16 TRUTH TABLE INPUTS OUTPUT OF ADDRESS LATCH EACH OTHER OUTPUT FUNCTION MR LE HL D Qio Addressable Latch HH Qio Qio Memory L L D L 8-Line Demultiplexer L H L L Reset H = High Voltage Level L = Low Voltage Level D = The level at the data input Qio = The level of Qi (i = 0, 1...7, as appropriate) before the indicat- ed steady-state input conditions were established. LATCH SELECTION TABLE SELECT INPUTS LATCH ADDRESSED A2 A1 A0 LLL 0 LL H 1 LHL 2 LH H 3 HL L 4 HLH 5 HH L 6 HHH 7 CD54HC259, CD74HC259, CD54HCT259, CD74HCT259 |
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