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M74HCT7259 Scheda tecnica(PDF) 3 Page - STMicroelectronics |
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M74HCT7259 Scheda tecnica(HTML) 3 Page - STMicroelectronics |
3 / 11 page INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PI N No SYMBOL NAME AND FUNCT ION 1, 2, 3 A, B, C Latch Select 4, 5, 6, 7, 9, 10, 11, 12 Q0 to Q7 latch Outputs 13 DATA IN Data Inputs 14 ENABLE Latch Enable Input 15 CLEAR Conditional Reset Input 8 GND Ground (0V) 16 VCC Positive Supply Voltage TRUTH TABLE INPUT S OUTPUTS OF ADDRESSED LATCH EACH O THER OUTPUT F UNCTION CLEAR ENABL E H L D QI0 ADDRESSABLE LATCH H H Qi0 Qi0 MEMORY L L D H 8-LINE DEMULTIPLEXER SELECT INPUT S L AT CH ADDRESSED CBA LLL Q0 LL H Q1 LHL Q2 LH H Q3 HL L Q4 HLH Q5 HH L Q6 HHH Q7 D:The level at the data input Qi0: The level before the indicated steady state input conditions were established, (i = 0,1,....,7). ABSOLUTE MAXIMUM RATINGS Symbol Parameter Val ue Unit VCC Supply Voltage -0.5 to +7.0 V VI DC Input Voltage -0.5 to VCC + 0.5 V VO DC Output Voltage -0.5 to VCC + 0.5 V IIK DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current Per Pin 100 mA IGND Ground Current - 800 mA ICC DC VCC Current 50 mA PD Power Dissipation 500 (*) mW Tstg Storage Temperature -65 to +150 oC TL Lead Temperature (10 sec) 300 oC Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. (*) 500 mW: ≅ 65 oC derateto 300 mW by 10mW/oC: 65 oCto85 oC M74HCT7259 3/11 |
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