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M74HCT244B1R Datasheet(PDF) 2 Page - STMicroelectronics |
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M74HCT244B1R Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 9 page M74HCT244 2/9 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION TRUTH TABLE X : Don’t Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C RECOMMENDED OPERATING CONDITIONS PIN No SYMBOL NAME AND FUNCTION 11G Output Enable Input 2, 4, 6, 8 1A1 to 1A4 Data Inputs 9, 7, 5, 3 2Y1 to 2Y4 Data Outputs 11, 13, 15, 17 2A1 to 2A4 Data Inputs 18, 16, 14, 12 1Y1 to 1Y4 Data Outputs 19 2G Output Enable Input 10 GND Ground (0V) 20 VCC Positive Supply Voltage INPUTS OUTPUT G An Yn LL L LH H HX Z Symbol Parameter Value Unit VCC Supply Voltage -0.5 to +7 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 ± 35 mA ICC or IGND DC VCC or Ground Current ± 70 mA PD Power Dissipation 500(*) mW Tstg Storage Temperature -65 to +150 °C TL Lead Temperature (10 sec) 300 °C Symbol Parameter Value Unit VCC Supply Voltage 4.5 to 5.5 V VI Input Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature -55 to 125 °C tr, tf Input Rise and Fall Time (VCC = 4.5 to 5.5V) 0 to 500 ns |
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