CD74HC240E Datasheet

Buffers & Line Drivers


The ’HC240 and ’HCT240 are inverting three-state buffershaving two active-low output enables. The CD74HC240E ,’HCT241, ’HC244 and ’HCT244 are non-inverting threestatebuffers that differ only in that the 241 has one activehighand one active-low output enable, and the 244 has twoactive-low output enables. All three types have identicalpinouts. CD74HC240E Features • HC/HCT240 Inverting• HC/HCT241 Non-Inverting• HC/HCT244 Non-Inverting• Typical Propagation Delay = 8ns at VCC = 5V,CL = 15pF, TA = 25oC for HC240• Three-State Outputs• Buffered Inputs• High-Current Bus Driver Outputs• Fanout (Over Temperature Range)- Standard Outputs . . . 10 LSTTL Loads- Bus Driver Outputs . . . 15 LSTTL Loads• Wide Operating Temperature Range . . . -55oC to 125oC• Balanced Propagation Delay and Transition Times• Significant Power Reduction Compared to LSTTLLogic ICs• HC Types- 2V to 6V Operation- High Noise Immunity: NIL = 30%, NIH = 30% of VCCat VCC = 5V• HCT Types- 4.5V to 5.5V Operation- Direct LSTTL Input Logic Compatibility,VIL= 0.8V (Max), VIH = 2V (Min)- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH


[{"Name":"Number of Input Lines: ","Value":"8"},{"Name":"Number of Output Lines: ","Value":"8"},{"Name":"Supply Voltage - Max: ","Value":"6 V "},{"Name":"Supply Voltage - Min: ","Value":"2 V "},{"Name":"Maximum Operating Temperature: ","Value":"+ 125 C "},{"Name":"High Level Output Current: ","Value":"- 7.8 mA "},{"Name":"Low Level Output Current: ","Value":"7.8 mA "},{"Name":"Minimum Operating Temperature: ","Value":"- 55 C "},{"Name":"Number of Channels per Chip: ","Value":"8"},{"Name":"Propagation Delay Time: ","Value":"100 ns at 2 V, 20 ns at 4.5 V, 17 ns at 6 V "}]

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